yading@10: /* yading@10: * MPEG-1/2 decoder yading@10: * Copyright (c) 2000, 2001 Fabrice Bellard yading@10: * Copyright (c) 2002-2013 Michael Niedermayer yading@10: * yading@10: * This file is part of FFmpeg. yading@10: * yading@10: * FFmpeg is free software; you can redistribute it and/or yading@10: * modify it under the terms of the GNU Lesser General Public yading@10: * License as published by the Free Software Foundation; either yading@10: * version 2.1 of the License, or (at your option) any later version. yading@10: * yading@10: * FFmpeg is distributed in the hope that it will be useful, yading@10: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@10: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@10: * Lesser General Public License for more details. yading@10: * yading@10: * You should have received a copy of the GNU Lesser General Public yading@10: * License along with FFmpeg; if not, write to the Free Software yading@10: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@10: */ yading@10: yading@10: /** yading@10: * @file yading@10: * MPEG-1/2 decoder yading@10: */ yading@10: yading@10: //#define DEBUG yading@10: #include "libavutil/internal.h" yading@10: #include "internal.h" yading@10: #include "avcodec.h" yading@10: #include "dsputil.h" yading@10: #include "mpegvideo.h" yading@10: #include "error_resilience.h" yading@10: #include "mpeg12.h" yading@10: #include "mpeg12data.h" yading@10: #include "mpeg12decdata.h" yading@10: #include "bytestream.h" yading@10: #include "vdpau_internal.h" yading@10: #include "xvmc_internal.h" yading@10: #include "thread.h" yading@10: yading@10: typedef struct Mpeg1Context { yading@10: MpegEncContext mpeg_enc_ctx; yading@10: int mpeg_enc_ctx_allocated; /* true if decoding context allocated */ yading@10: int repeat_field; /* true if we must repeat the field */ yading@10: AVPanScan pan_scan; /**< some temporary storage for the panscan */ yading@10: int slice_count; yading@10: int swap_uv;//indicate VCR2 yading@10: int save_aspect_info; yading@10: int save_width, save_height, save_progressive_seq; yading@10: AVRational frame_rate_ext; ///< MPEG-2 specific framerate modificator yading@10: int sync; ///< Did we reach a sync point like a GOP/SEQ/KEYFrame? yading@10: int tmpgexs; yading@10: int extradata_decoded; yading@10: } Mpeg1Context; yading@10: yading@10: /* as H.263, but only 17 codes */ yading@10: static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred) yading@10: { yading@10: int code, sign, val, shift; yading@10: yading@10: code = get_vlc2(&s->gb, ff_mv_vlc.table, MV_VLC_BITS, 2); yading@10: if (code == 0) { yading@10: return pred; yading@10: } yading@10: if (code < 0) { yading@10: return 0xffff; yading@10: } yading@10: yading@10: sign = get_bits1(&s->gb); yading@10: shift = fcode - 1; yading@10: val = code; yading@10: if (shift) { yading@10: val = (val - 1) << shift; yading@10: val |= get_bits(&s->gb, shift); yading@10: val++; yading@10: } yading@10: if (sign) yading@10: val = -val; yading@10: val += pred; yading@10: yading@10: /* modulo decoding */ yading@10: return sign_extend(val, 5 + shift); yading@10: } yading@10: yading@10: static inline int mpeg1_decode_block_intra(MpegEncContext *s, int16_t *block, int n) yading@10: { yading@10: int level, dc, diff, i, j, run; yading@10: int component; yading@10: RLTable *rl = &ff_rl_mpeg1; yading@10: uint8_t * const scantable = s->intra_scantable.permutated; yading@10: const uint16_t *quant_matrix = s->intra_matrix; yading@10: const int qscale = s->qscale; yading@10: yading@10: /* DC coefficient */ yading@10: component = (n <= 3 ? 0 : n - 4 + 1); yading@10: diff = decode_dc(&s->gb, component); yading@10: if (diff >= 0xffff) yading@10: return -1; yading@10: dc = s->last_dc[component]; yading@10: dc += diff; yading@10: s->last_dc[component] = dc; yading@10: block[0] = dc * quant_matrix[0]; yading@10: av_dlog(s->avctx, "dc=%d diff=%d\n", dc, diff); yading@10: i = 0; yading@10: { yading@10: OPEN_READER(re, &s->gb); yading@10: /* now quantify & encode AC coefficients */ yading@10: for (;;) { yading@10: UPDATE_CACHE(re, &s->gb); yading@10: GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0); yading@10: yading@10: if (level == 127) { yading@10: break; yading@10: } else if (level != 0) { yading@10: i += run; yading@10: j = scantable[i]; yading@10: level = (level * qscale * quant_matrix[j]) >> 4; yading@10: level = (level - 1) | 1; yading@10: level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); yading@10: LAST_SKIP_BITS(re, &s->gb, 1); yading@10: } else { yading@10: /* escape */ yading@10: run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6); yading@10: UPDATE_CACHE(re, &s->gb); yading@10: level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8); yading@10: if (level == -128) { yading@10: level = SHOW_UBITS(re, &s->gb, 8) - 256; LAST_SKIP_BITS(re, &s->gb, 8); yading@10: } else if (level == 0) { yading@10: level = SHOW_UBITS(re, &s->gb, 8) ; LAST_SKIP_BITS(re, &s->gb, 8); yading@10: } yading@10: i += run; yading@10: j = scantable[i]; yading@10: if (level < 0) { yading@10: level = -level; yading@10: level = (level * qscale * quant_matrix[j]) >> 4; yading@10: level = (level - 1) | 1; yading@10: level = -level; yading@10: } else { yading@10: level = (level * qscale * quant_matrix[j]) >> 4; yading@10: level = (level - 1) | 1; yading@10: } yading@10: } yading@10: if (i > 63) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y); yading@10: return -1; yading@10: } yading@10: yading@10: block[j] = level; yading@10: } yading@10: CLOSE_READER(re, &s->gb); yading@10: } yading@10: s->block_last_index[n] = i; yading@10: return 0; yading@10: } yading@10: yading@10: int ff_mpeg1_decode_block_intra(MpegEncContext *s, int16_t *block, int n) yading@10: { yading@10: return mpeg1_decode_block_intra(s, block, n); yading@10: } yading@10: yading@10: static inline int mpeg1_decode_block_inter(MpegEncContext *s, int16_t *block, int n) yading@10: { yading@10: int level, i, j, run; yading@10: RLTable *rl = &ff_rl_mpeg1; yading@10: uint8_t * const scantable = s->intra_scantable.permutated; yading@10: const uint16_t *quant_matrix = s->inter_matrix; yading@10: const int qscale = s->qscale; yading@10: yading@10: { yading@10: OPEN_READER(re, &s->gb); yading@10: i = -1; yading@10: // special case for first coefficient, no need to add second VLC table yading@10: UPDATE_CACHE(re, &s->gb); yading@10: if (((int32_t)GET_CACHE(re, &s->gb)) < 0) { yading@10: level = (3 * qscale * quant_matrix[0]) >> 5; yading@10: level = (level - 1) | 1; yading@10: if (GET_CACHE(re, &s->gb) & 0x40000000) yading@10: level = -level; yading@10: block[0] = level; yading@10: i++; yading@10: SKIP_BITS(re, &s->gb, 2); yading@10: if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) yading@10: goto end; yading@10: } yading@10: /* now quantify & encode AC coefficients */ yading@10: for (;;) { yading@10: GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0); yading@10: yading@10: if (level != 0) { yading@10: i += run; yading@10: j = scantable[i]; yading@10: level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; yading@10: level = (level - 1) | 1; yading@10: level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); yading@10: SKIP_BITS(re, &s->gb, 1); yading@10: } else { yading@10: /* escape */ yading@10: run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6); yading@10: UPDATE_CACHE(re, &s->gb); yading@10: level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8); yading@10: if (level == -128) { yading@10: level = SHOW_UBITS(re, &s->gb, 8) - 256; SKIP_BITS(re, &s->gb, 8); yading@10: } else if (level == 0) { yading@10: level = SHOW_UBITS(re, &s->gb, 8) ; SKIP_BITS(re, &s->gb, 8); yading@10: } yading@10: i += run; yading@10: j = scantable[i]; yading@10: if (level < 0) { yading@10: level = -level; yading@10: level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; yading@10: level = (level - 1) | 1; yading@10: level = -level; yading@10: } else { yading@10: level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; yading@10: level = (level - 1) | 1; yading@10: } yading@10: } yading@10: if (i > 63) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y); yading@10: return -1; yading@10: } yading@10: yading@10: block[j] = level; yading@10: if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) yading@10: break; yading@10: UPDATE_CACHE(re, &s->gb); yading@10: } yading@10: end: yading@10: LAST_SKIP_BITS(re, &s->gb, 2); yading@10: CLOSE_READER(re, &s->gb); yading@10: } yading@10: s->block_last_index[n] = i; yading@10: return 0; yading@10: } yading@10: yading@10: /** yading@10: * Note: this function can read out of range and crash for corrupt streams. yading@10: * Changing this would eat up any speed benefits it has. yading@10: * Do not use "fast" flag if you need the code to be robust. yading@10: */ yading@10: static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, int16_t *block, int n) yading@10: { yading@10: int level, i, j, run; yading@10: RLTable *rl = &ff_rl_mpeg1; yading@10: uint8_t * const scantable = s->intra_scantable.permutated; yading@10: const int qscale = s->qscale; yading@10: yading@10: { yading@10: OPEN_READER(re, &s->gb); yading@10: i = -1; yading@10: // special case for first coefficient, no need to add second VLC table yading@10: UPDATE_CACHE(re, &s->gb); yading@10: if (((int32_t)GET_CACHE(re, &s->gb)) < 0) { yading@10: level = (3 * qscale) >> 1; yading@10: level = (level - 1) | 1; yading@10: if (GET_CACHE(re, &s->gb) & 0x40000000) yading@10: level = -level; yading@10: block[0] = level; yading@10: i++; yading@10: SKIP_BITS(re, &s->gb, 2); yading@10: if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) yading@10: goto end; yading@10: } yading@10: yading@10: /* now quantify & encode AC coefficients */ yading@10: for (;;) { yading@10: GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0); yading@10: yading@10: if (level != 0) { yading@10: i += run; yading@10: j = scantable[i]; yading@10: level = ((level * 2 + 1) * qscale) >> 1; yading@10: level = (level - 1) | 1; yading@10: level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); yading@10: SKIP_BITS(re, &s->gb, 1); yading@10: } else { yading@10: /* escape */ yading@10: run = SHOW_UBITS(re, &s->gb, 6)+1; LAST_SKIP_BITS(re, &s->gb, 6); yading@10: UPDATE_CACHE(re, &s->gb); yading@10: level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8); yading@10: if (level == -128) { yading@10: level = SHOW_UBITS(re, &s->gb, 8) - 256; SKIP_BITS(re, &s->gb, 8); yading@10: } else if (level == 0) { yading@10: level = SHOW_UBITS(re, &s->gb, 8) ; SKIP_BITS(re, &s->gb, 8); yading@10: } yading@10: i += run; yading@10: j = scantable[i]; yading@10: if (level < 0) { yading@10: level = -level; yading@10: level = ((level * 2 + 1) * qscale) >> 1; yading@10: level = (level - 1) | 1; yading@10: level = -level; yading@10: } else { yading@10: level = ((level * 2 + 1) * qscale) >> 1; yading@10: level = (level - 1) | 1; yading@10: } yading@10: } yading@10: yading@10: block[j] = level; yading@10: if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) yading@10: break; yading@10: UPDATE_CACHE(re, &s->gb); yading@10: } yading@10: end: yading@10: LAST_SKIP_BITS(re, &s->gb, 2); yading@10: CLOSE_READER(re, &s->gb); yading@10: } yading@10: s->block_last_index[n] = i; yading@10: return 0; yading@10: } yading@10: yading@10: yading@10: static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, int16_t *block, int n) yading@10: { yading@10: int level, i, j, run; yading@10: RLTable *rl = &ff_rl_mpeg1; yading@10: uint8_t * const scantable = s->intra_scantable.permutated; yading@10: const uint16_t *quant_matrix; yading@10: const int qscale = s->qscale; yading@10: int mismatch; yading@10: yading@10: mismatch = 1; yading@10: yading@10: { yading@10: OPEN_READER(re, &s->gb); yading@10: i = -1; yading@10: if (n < 4) yading@10: quant_matrix = s->inter_matrix; yading@10: else yading@10: quant_matrix = s->chroma_inter_matrix; yading@10: yading@10: // special case for first coefficient, no need to add second VLC table yading@10: UPDATE_CACHE(re, &s->gb); yading@10: if (((int32_t)GET_CACHE(re, &s->gb)) < 0) { yading@10: level= (3 * qscale * quant_matrix[0]) >> 5; yading@10: if (GET_CACHE(re, &s->gb) & 0x40000000) yading@10: level = -level; yading@10: block[0] = level; yading@10: mismatch ^= level; yading@10: i++; yading@10: SKIP_BITS(re, &s->gb, 2); yading@10: if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) yading@10: goto end; yading@10: } yading@10: yading@10: /* now quantify & encode AC coefficients */ yading@10: for (;;) { yading@10: GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0); yading@10: yading@10: if (level != 0) { yading@10: i += run; yading@10: j = scantable[i]; yading@10: level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; yading@10: level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); yading@10: SKIP_BITS(re, &s->gb, 1); yading@10: } else { yading@10: /* escape */ yading@10: run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6); yading@10: UPDATE_CACHE(re, &s->gb); yading@10: level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12); yading@10: yading@10: i += run; yading@10: j = scantable[i]; yading@10: if (level < 0) { yading@10: level = ((-level * 2 + 1) * qscale * quant_matrix[j]) >> 5; yading@10: level = -level; yading@10: } else { yading@10: level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; yading@10: } yading@10: } yading@10: if (i > 63) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y); yading@10: return -1; yading@10: } yading@10: yading@10: mismatch ^= level; yading@10: block[j] = level; yading@10: if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) yading@10: break; yading@10: UPDATE_CACHE(re, &s->gb); yading@10: } yading@10: end: yading@10: LAST_SKIP_BITS(re, &s->gb, 2); yading@10: CLOSE_READER(re, &s->gb); yading@10: } yading@10: block[63] ^= (mismatch & 1); yading@10: yading@10: s->block_last_index[n] = i; yading@10: return 0; yading@10: } yading@10: yading@10: /** yading@10: * Note: this function can read out of range and crash for corrupt streams. yading@10: * Changing this would eat up any speed benefits it has. yading@10: * Do not use "fast" flag if you need the code to be robust. yading@10: */ yading@10: static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s, yading@10: int16_t *block, int n) yading@10: { yading@10: int level, i, j, run; yading@10: RLTable *rl = &ff_rl_mpeg1; yading@10: uint8_t * const scantable = s->intra_scantable.permutated; yading@10: const int qscale = s->qscale; yading@10: OPEN_READER(re, &s->gb); yading@10: i = -1; yading@10: yading@10: // special case for first coefficient, no need to add second VLC table yading@10: UPDATE_CACHE(re, &s->gb); yading@10: if (((int32_t)GET_CACHE(re, &s->gb)) < 0) { yading@10: level = (3 * qscale) >> 1; yading@10: if (GET_CACHE(re, &s->gb) & 0x40000000) yading@10: level = -level; yading@10: block[0] = level; yading@10: i++; yading@10: SKIP_BITS(re, &s->gb, 2); yading@10: if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) yading@10: goto end; yading@10: } yading@10: yading@10: /* now quantify & encode AC coefficients */ yading@10: for (;;) { yading@10: GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0); yading@10: yading@10: if (level != 0) { yading@10: i += run; yading@10: j = scantable[i]; yading@10: level = ((level * 2 + 1) * qscale) >> 1; yading@10: level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); yading@10: SKIP_BITS(re, &s->gb, 1); yading@10: } else { yading@10: /* escape */ yading@10: run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6); yading@10: UPDATE_CACHE(re, &s->gb); yading@10: level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12); yading@10: yading@10: i += run; yading@10: j = scantable[i]; yading@10: if (level < 0) { yading@10: level = ((-level * 2 + 1) * qscale) >> 1; yading@10: level = -level; yading@10: } else { yading@10: level = ((level * 2 + 1) * qscale) >> 1; yading@10: } yading@10: } yading@10: yading@10: block[j] = level; yading@10: if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) yading@10: break; yading@10: UPDATE_CACHE(re, &s->gb); yading@10: } yading@10: end: yading@10: LAST_SKIP_BITS(re, &s->gb, 2); yading@10: CLOSE_READER(re, &s->gb); yading@10: s->block_last_index[n] = i; yading@10: return 0; yading@10: } yading@10: yading@10: yading@10: static inline int mpeg2_decode_block_intra(MpegEncContext *s, int16_t *block, int n) yading@10: { yading@10: int level, dc, diff, i, j, run; yading@10: int component; yading@10: RLTable *rl; yading@10: uint8_t * const scantable = s->intra_scantable.permutated; yading@10: const uint16_t *quant_matrix; yading@10: const int qscale = s->qscale; yading@10: int mismatch; yading@10: yading@10: /* DC coefficient */ yading@10: if (n < 4) { yading@10: quant_matrix = s->intra_matrix; yading@10: component = 0; yading@10: } else { yading@10: quant_matrix = s->chroma_intra_matrix; yading@10: component = (n & 1) + 1; yading@10: } yading@10: diff = decode_dc(&s->gb, component); yading@10: if (diff >= 0xffff) yading@10: return -1; yading@10: dc = s->last_dc[component]; yading@10: dc += diff; yading@10: s->last_dc[component] = dc; yading@10: block[0] = dc << (3 - s->intra_dc_precision); yading@10: av_dlog(s->avctx, "dc=%d\n", block[0]); yading@10: mismatch = block[0] ^ 1; yading@10: i = 0; yading@10: if (s->intra_vlc_format) yading@10: rl = &ff_rl_mpeg2; yading@10: else yading@10: rl = &ff_rl_mpeg1; yading@10: yading@10: { yading@10: OPEN_READER(re, &s->gb); yading@10: /* now quantify & encode AC coefficients */ yading@10: for (;;) { yading@10: UPDATE_CACHE(re, &s->gb); yading@10: GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0); yading@10: yading@10: if (level == 127) { yading@10: break; yading@10: } else if (level != 0) { yading@10: i += run; yading@10: j = scantable[i]; yading@10: level = (level * qscale * quant_matrix[j]) >> 4; yading@10: level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); yading@10: LAST_SKIP_BITS(re, &s->gb, 1); yading@10: } else { yading@10: /* escape */ yading@10: run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6); yading@10: UPDATE_CACHE(re, &s->gb); yading@10: level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12); yading@10: i += run; yading@10: j = scantable[i]; yading@10: if (level < 0) { yading@10: level = (-level * qscale * quant_matrix[j]) >> 4; yading@10: level = -level; yading@10: } else { yading@10: level = (level * qscale * quant_matrix[j]) >> 4; yading@10: } yading@10: } yading@10: if (i > 63) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y); yading@10: return -1; yading@10: } yading@10: yading@10: mismatch ^= level; yading@10: block[j] = level; yading@10: } yading@10: CLOSE_READER(re, &s->gb); yading@10: } yading@10: block[63] ^= mismatch & 1; yading@10: yading@10: s->block_last_index[n] = i; yading@10: return 0; yading@10: } yading@10: yading@10: /** yading@10: * Note: this function can read out of range and crash for corrupt streams. yading@10: * Changing this would eat up any speed benefits it has. yading@10: * Do not use "fast" flag if you need the code to be robust. yading@10: */ yading@10: static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, int16_t *block, int n) yading@10: { yading@10: int level, dc, diff, j, run; yading@10: int component; yading@10: RLTable *rl; yading@10: uint8_t * scantable = s->intra_scantable.permutated; yading@10: const uint16_t *quant_matrix; yading@10: const int qscale = s->qscale; yading@10: yading@10: /* DC coefficient */ yading@10: if (n < 4) { yading@10: quant_matrix = s->intra_matrix; yading@10: component = 0; yading@10: } else { yading@10: quant_matrix = s->chroma_intra_matrix; yading@10: component = (n & 1) + 1; yading@10: } yading@10: diff = decode_dc(&s->gb, component); yading@10: if (diff >= 0xffff) yading@10: return -1; yading@10: dc = s->last_dc[component]; yading@10: dc += diff; yading@10: s->last_dc[component] = dc; yading@10: block[0] = dc << (3 - s->intra_dc_precision); yading@10: if (s->intra_vlc_format) yading@10: rl = &ff_rl_mpeg2; yading@10: else yading@10: rl = &ff_rl_mpeg1; yading@10: yading@10: { yading@10: OPEN_READER(re, &s->gb); yading@10: /* now quantify & encode AC coefficients */ yading@10: for (;;) { yading@10: UPDATE_CACHE(re, &s->gb); yading@10: GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0); yading@10: yading@10: if (level == 127) { yading@10: break; yading@10: } else if (level != 0) { yading@10: scantable += run; yading@10: j = *scantable; yading@10: level = (level * qscale * quant_matrix[j]) >> 4; yading@10: level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); yading@10: LAST_SKIP_BITS(re, &s->gb, 1); yading@10: } else { yading@10: /* escape */ yading@10: run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6); yading@10: UPDATE_CACHE(re, &s->gb); yading@10: level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12); yading@10: scantable += run; yading@10: j = *scantable; yading@10: if (level < 0) { yading@10: level = (-level * qscale * quant_matrix[j]) >> 4; yading@10: level = -level; yading@10: } else { yading@10: level = (level * qscale * quant_matrix[j]) >> 4; yading@10: } yading@10: } yading@10: yading@10: block[j] = level; yading@10: } yading@10: CLOSE_READER(re, &s->gb); yading@10: } yading@10: yading@10: s->block_last_index[n] = scantable - s->intra_scantable.permutated; yading@10: return 0; yading@10: } yading@10: yading@10: /******************************************/ yading@10: /* decoding */ yading@10: yading@10: static inline int get_dmv(MpegEncContext *s) yading@10: { yading@10: if (get_bits1(&s->gb)) yading@10: return 1 - (get_bits1(&s->gb) << 1); yading@10: else yading@10: return 0; yading@10: } yading@10: yading@10: static inline int get_qscale(MpegEncContext *s) yading@10: { yading@10: int qscale = get_bits(&s->gb, 5); yading@10: if (s->q_scale_type) { yading@10: return non_linear_qscale[qscale]; yading@10: } else { yading@10: return qscale << 1; yading@10: } yading@10: } yading@10: yading@10: static void exchange_uv(MpegEncContext *s) yading@10: { yading@10: int16_t (*tmp)[64]; yading@10: yading@10: tmp = s->pblocks[4]; yading@10: s->pblocks[4] = s->pblocks[5]; yading@10: s->pblocks[5] = tmp; yading@10: } yading@10: yading@10: /* motion type (for MPEG-2) */ yading@10: #define MT_FIELD 1 yading@10: #define MT_FRAME 2 yading@10: #define MT_16X8 2 yading@10: #define MT_DMV 3 yading@10: yading@10: static int mpeg_decode_mb(MpegEncContext *s, int16_t block[12][64]) yading@10: { yading@10: int i, j, k, cbp, val, mb_type, motion_type; yading@10: const int mb_block_count = 4 + (1 << s->chroma_format); yading@10: yading@10: av_dlog(s->avctx, "decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y); yading@10: yading@10: av_assert2(s->mb_skipped == 0); yading@10: yading@10: if (s->mb_skip_run-- != 0) { yading@10: if (s->pict_type == AV_PICTURE_TYPE_P) { yading@10: s->mb_skipped = 1; yading@10: s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride] = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16; yading@10: } else { yading@10: int mb_type; yading@10: yading@10: if (s->mb_x) yading@10: mb_type = s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride - 1]; yading@10: else yading@10: mb_type = s->current_picture.mb_type[s->mb_width + (s->mb_y - 1) * s->mb_stride - 1]; // FIXME not sure if this is allowed in MPEG at all yading@10: if (IS_INTRA(mb_type)) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "skip with previntra\n"); yading@10: return -1; yading@10: } yading@10: s->current_picture.mb_type[s->mb_x + s->mb_y*s->mb_stride] = yading@10: mb_type | MB_TYPE_SKIP; yading@10: yading@10: // assert(s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride - 1] & (MB_TYPE_16x16 | MB_TYPE_16x8)); yading@10: yading@10: if ((s->mv[0][0][0] | s->mv[0][0][1] | s->mv[1][0][0] | s->mv[1][0][1]) == 0) yading@10: s->mb_skipped = 1; yading@10: } yading@10: yading@10: return 0; yading@10: } yading@10: yading@10: switch (s->pict_type) { yading@10: default: yading@10: case AV_PICTURE_TYPE_I: yading@10: if (get_bits1(&s->gb) == 0) { yading@10: if (get_bits1(&s->gb) == 0) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in I Frame at %d %d\n", s->mb_x, s->mb_y); yading@10: return -1; yading@10: } yading@10: mb_type = MB_TYPE_QUANT | MB_TYPE_INTRA; yading@10: } else { yading@10: mb_type = MB_TYPE_INTRA; yading@10: } yading@10: break; yading@10: case AV_PICTURE_TYPE_P: yading@10: mb_type = get_vlc2(&s->gb, ff_mb_ptype_vlc.table, MB_PTYPE_VLC_BITS, 1); yading@10: if (mb_type < 0) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in P Frame at %d %d\n", s->mb_x, s->mb_y); yading@10: return -1; yading@10: } yading@10: mb_type = ptype2mb_type[mb_type]; yading@10: break; yading@10: case AV_PICTURE_TYPE_B: yading@10: mb_type = get_vlc2(&s->gb, ff_mb_btype_vlc.table, MB_BTYPE_VLC_BITS, 1); yading@10: if (mb_type < 0) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in B Frame at %d %d\n", s->mb_x, s->mb_y); yading@10: return -1; yading@10: } yading@10: mb_type = btype2mb_type[mb_type]; yading@10: break; yading@10: } yading@10: av_dlog(s->avctx, "mb_type=%x\n", mb_type); yading@10: // motion_type = 0; /* avoid warning */ yading@10: if (IS_INTRA(mb_type)) { yading@10: s->dsp.clear_blocks(s->block[0]); yading@10: yading@10: if (!s->chroma_y_shift) { yading@10: s->dsp.clear_blocks(s->block[6]); yading@10: } yading@10: yading@10: /* compute DCT type */ yading@10: if (s->picture_structure == PICT_FRAME && // FIXME add an interlaced_dct coded var? yading@10: !s->frame_pred_frame_dct) { yading@10: s->interlaced_dct = get_bits1(&s->gb); yading@10: } yading@10: yading@10: if (IS_QUANT(mb_type)) yading@10: s->qscale = get_qscale(s); yading@10: yading@10: if (s->concealment_motion_vectors) { yading@10: /* just parse them */ yading@10: if (s->picture_structure != PICT_FRAME) yading@10: skip_bits1(&s->gb); /* field select */ yading@10: yading@10: s->mv[0][0][0]= s->last_mv[0][0][0]= s->last_mv[0][1][0] = yading@10: mpeg_decode_motion(s, s->mpeg_f_code[0][0], s->last_mv[0][0][0]); yading@10: s->mv[0][0][1]= s->last_mv[0][0][1]= s->last_mv[0][1][1] = yading@10: mpeg_decode_motion(s, s->mpeg_f_code[0][1], s->last_mv[0][0][1]); yading@10: yading@10: skip_bits1(&s->gb); /* marker */ yading@10: } else yading@10: memset(s->last_mv, 0, sizeof(s->last_mv)); /* reset mv prediction */ yading@10: s->mb_intra = 1; yading@10: // if 1, we memcpy blocks in xvmcvideo yading@10: if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1) { yading@10: ff_xvmc_pack_pblocks(s, -1); // inter are always full blocks yading@10: if (s->swap_uv) { yading@10: exchange_uv(s); yading@10: } yading@10: } yading@10: yading@10: if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) { yading@10: if (s->flags2 & CODEC_FLAG2_FAST) { yading@10: for (i = 0; i < 6; i++) { yading@10: mpeg2_fast_decode_block_intra(s, *s->pblocks[i], i); yading@10: } yading@10: } else { yading@10: for (i = 0; i < mb_block_count; i++) { yading@10: if (mpeg2_decode_block_intra(s, *s->pblocks[i], i) < 0) yading@10: return -1; yading@10: } yading@10: } yading@10: } else { yading@10: for (i = 0; i < 6; i++) { yading@10: if (mpeg1_decode_block_intra(s, *s->pblocks[i], i) < 0) yading@10: return -1; yading@10: } yading@10: } yading@10: } else { yading@10: if (mb_type & MB_TYPE_ZERO_MV) { yading@10: av_assert2(mb_type & MB_TYPE_CBP); yading@10: yading@10: s->mv_dir = MV_DIR_FORWARD; yading@10: if (s->picture_structure == PICT_FRAME) { yading@10: if (s->picture_structure == PICT_FRAME yading@10: && !s->frame_pred_frame_dct) yading@10: s->interlaced_dct = get_bits1(&s->gb); yading@10: s->mv_type = MV_TYPE_16X16; yading@10: } else { yading@10: s->mv_type = MV_TYPE_FIELD; yading@10: mb_type |= MB_TYPE_INTERLACED; yading@10: s->field_select[0][0] = s->picture_structure - 1; yading@10: } yading@10: yading@10: if (IS_QUANT(mb_type)) yading@10: s->qscale = get_qscale(s); yading@10: yading@10: s->last_mv[0][0][0] = 0; yading@10: s->last_mv[0][0][1] = 0; yading@10: s->last_mv[0][1][0] = 0; yading@10: s->last_mv[0][1][1] = 0; yading@10: s->mv[0][0][0] = 0; yading@10: s->mv[0][0][1] = 0; yading@10: } else { yading@10: av_assert2(mb_type & MB_TYPE_L0L1); yading@10: // FIXME decide if MBs in field pictures are MB_TYPE_INTERLACED yading@10: /* get additional motion vector type */ yading@10: if (s->picture_structure == PICT_FRAME && s->frame_pred_frame_dct) yading@10: motion_type = MT_FRAME; yading@10: else { yading@10: motion_type = get_bits(&s->gb, 2); yading@10: if (s->picture_structure == PICT_FRAME && HAS_CBP(mb_type)) yading@10: s->interlaced_dct = get_bits1(&s->gb); yading@10: } yading@10: yading@10: if (IS_QUANT(mb_type)) yading@10: s->qscale = get_qscale(s); yading@10: yading@10: /* motion vectors */ yading@10: s->mv_dir = (mb_type >> 13) & 3; yading@10: av_dlog(s->avctx, "motion_type=%d\n", motion_type); yading@10: switch (motion_type) { yading@10: case MT_FRAME: /* or MT_16X8 */ yading@10: if (s->picture_structure == PICT_FRAME) { yading@10: mb_type |= MB_TYPE_16x16; yading@10: s->mv_type = MV_TYPE_16X16; yading@10: for (i = 0; i < 2; i++) { yading@10: if (USES_LIST(mb_type, i)) { yading@10: /* MT_FRAME */ yading@10: s->mv[i][0][0]= s->last_mv[i][0][0]= s->last_mv[i][1][0] = yading@10: mpeg_decode_motion(s, s->mpeg_f_code[i][0], s->last_mv[i][0][0]); yading@10: s->mv[i][0][1]= s->last_mv[i][0][1]= s->last_mv[i][1][1] = yading@10: mpeg_decode_motion(s, s->mpeg_f_code[i][1], s->last_mv[i][0][1]); yading@10: /* full_pel: only for MPEG-1 */ yading@10: if (s->full_pel[i]) { yading@10: s->mv[i][0][0] <<= 1; yading@10: s->mv[i][0][1] <<= 1; yading@10: } yading@10: } yading@10: } yading@10: } else { yading@10: mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED; yading@10: s->mv_type = MV_TYPE_16X8; yading@10: for (i = 0; i < 2; i++) { yading@10: if (USES_LIST(mb_type, i)) { yading@10: /* MT_16X8 */ yading@10: for (j = 0; j < 2; j++) { yading@10: s->field_select[i][j] = get_bits1(&s->gb); yading@10: for (k = 0; k < 2; k++) { yading@10: val = mpeg_decode_motion(s, s->mpeg_f_code[i][k], yading@10: s->last_mv[i][j][k]); yading@10: s->last_mv[i][j][k] = val; yading@10: s->mv[i][j][k] = val; yading@10: } yading@10: } yading@10: } yading@10: } yading@10: } yading@10: break; yading@10: case MT_FIELD: yading@10: s->mv_type = MV_TYPE_FIELD; yading@10: if (s->picture_structure == PICT_FRAME) { yading@10: mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED; yading@10: for (i = 0; i < 2; i++) { yading@10: if (USES_LIST(mb_type, i)) { yading@10: for (j = 0; j < 2; j++) { yading@10: s->field_select[i][j] = get_bits1(&s->gb); yading@10: val = mpeg_decode_motion(s, s->mpeg_f_code[i][0], yading@10: s->last_mv[i][j][0]); yading@10: s->last_mv[i][j][0] = val; yading@10: s->mv[i][j][0] = val; yading@10: av_dlog(s->avctx, "fmx=%d\n", val); yading@10: val = mpeg_decode_motion(s, s->mpeg_f_code[i][1], yading@10: s->last_mv[i][j][1] >> 1); yading@10: s->last_mv[i][j][1] = val << 1; yading@10: s->mv[i][j][1] = val; yading@10: av_dlog(s->avctx, "fmy=%d\n", val); yading@10: } yading@10: } yading@10: } yading@10: } else { yading@10: av_assert0(!s->progressive_sequence); yading@10: mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED; yading@10: for (i = 0; i < 2; i++) { yading@10: if (USES_LIST(mb_type, i)) { yading@10: s->field_select[i][0] = get_bits1(&s->gb); yading@10: for (k = 0; k < 2; k++) { yading@10: val = mpeg_decode_motion(s, s->mpeg_f_code[i][k], yading@10: s->last_mv[i][0][k]); yading@10: s->last_mv[i][0][k] = val; yading@10: s->last_mv[i][1][k] = val; yading@10: s->mv[i][0][k] = val; yading@10: } yading@10: } yading@10: } yading@10: } yading@10: break; yading@10: case MT_DMV: yading@10: if(s->progressive_sequence){ yading@10: av_log(s->avctx, AV_LOG_ERROR, "MT_DMV in progressive_sequence\n"); yading@10: return -1; yading@10: } yading@10: s->mv_type = MV_TYPE_DMV; yading@10: for (i = 0; i < 2; i++) { yading@10: if (USES_LIST(mb_type, i)) { yading@10: int dmx, dmy, mx, my, m; yading@10: const int my_shift = s->picture_structure == PICT_FRAME; yading@10: yading@10: mx = mpeg_decode_motion(s, s->mpeg_f_code[i][0], yading@10: s->last_mv[i][0][0]); yading@10: s->last_mv[i][0][0] = mx; yading@10: s->last_mv[i][1][0] = mx; yading@10: dmx = get_dmv(s); yading@10: my = mpeg_decode_motion(s, s->mpeg_f_code[i][1], yading@10: s->last_mv[i][0][1] >> my_shift); yading@10: dmy = get_dmv(s); yading@10: yading@10: yading@10: s->last_mv[i][0][1] = my << my_shift; yading@10: s->last_mv[i][1][1] = my << my_shift; yading@10: yading@10: s->mv[i][0][0] = mx; yading@10: s->mv[i][0][1] = my; yading@10: s->mv[i][1][0] = mx; // not used yading@10: s->mv[i][1][1] = my; // not used yading@10: yading@10: if (s->picture_structure == PICT_FRAME) { yading@10: mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED; yading@10: yading@10: // m = 1 + 2 * s->top_field_first; yading@10: m = s->top_field_first ? 1 : 3; yading@10: yading@10: /* top -> top pred */ yading@10: s->mv[i][2][0] = ((mx * m + (mx > 0)) >> 1) + dmx; yading@10: s->mv[i][2][1] = ((my * m + (my > 0)) >> 1) + dmy - 1; yading@10: m = 4 - m; yading@10: s->mv[i][3][0] = ((mx * m + (mx > 0)) >> 1) + dmx; yading@10: s->mv[i][3][1] = ((my * m + (my > 0)) >> 1) + dmy + 1; yading@10: } else { yading@10: mb_type |= MB_TYPE_16x16; yading@10: yading@10: s->mv[i][2][0] = ((mx + (mx > 0)) >> 1) + dmx; yading@10: s->mv[i][2][1] = ((my + (my > 0)) >> 1) + dmy; yading@10: if (s->picture_structure == PICT_TOP_FIELD) yading@10: s->mv[i][2][1]--; yading@10: else yading@10: s->mv[i][2][1]++; yading@10: } yading@10: } yading@10: } yading@10: break; yading@10: default: yading@10: av_log(s->avctx, AV_LOG_ERROR, "00 motion_type at %d %d\n", s->mb_x, s->mb_y); yading@10: return -1; yading@10: } yading@10: } yading@10: yading@10: s->mb_intra = 0; yading@10: if (HAS_CBP(mb_type)) { yading@10: s->dsp.clear_blocks(s->block[0]); yading@10: yading@10: cbp = get_vlc2(&s->gb, ff_mb_pat_vlc.table, MB_PAT_VLC_BITS, 1); yading@10: if (mb_block_count > 6) { yading@10: cbp <<= mb_block_count - 6; yading@10: cbp |= get_bits(&s->gb, mb_block_count - 6); yading@10: s->dsp.clear_blocks(s->block[6]); yading@10: } yading@10: if (cbp <= 0) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "invalid cbp %d at %d %d\n", cbp, s->mb_x, s->mb_y); yading@10: return -1; yading@10: } yading@10: yading@10: //if 1, we memcpy blocks in xvmcvideo yading@10: if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1) { yading@10: ff_xvmc_pack_pblocks(s, cbp); yading@10: if (s->swap_uv) { yading@10: exchange_uv(s); yading@10: } yading@10: } yading@10: yading@10: if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) { yading@10: if (s->flags2 & CODEC_FLAG2_FAST) { yading@10: for (i = 0; i < 6; i++) { yading@10: if (cbp & 32) { yading@10: mpeg2_fast_decode_block_non_intra(s, *s->pblocks[i], i); yading@10: } else { yading@10: s->block_last_index[i] = -1; yading@10: } yading@10: cbp += cbp; yading@10: } yading@10: } else { yading@10: cbp <<= 12-mb_block_count; yading@10: yading@10: for (i = 0; i < mb_block_count; i++) { yading@10: if (cbp & (1 << 11)) { yading@10: if (mpeg2_decode_block_non_intra(s, *s->pblocks[i], i) < 0) yading@10: return -1; yading@10: } else { yading@10: s->block_last_index[i] = -1; yading@10: } yading@10: cbp += cbp; yading@10: } yading@10: } yading@10: } else { yading@10: if (s->flags2 & CODEC_FLAG2_FAST) { yading@10: for (i = 0; i < 6; i++) { yading@10: if (cbp & 32) { yading@10: mpeg1_fast_decode_block_inter(s, *s->pblocks[i], i); yading@10: } else { yading@10: s->block_last_index[i] = -1; yading@10: } yading@10: cbp += cbp; yading@10: } yading@10: } else { yading@10: for (i = 0; i < 6; i++) { yading@10: if (cbp & 32) { yading@10: if (mpeg1_decode_block_inter(s, *s->pblocks[i], i) < 0) yading@10: return -1; yading@10: } else { yading@10: s->block_last_index[i] = -1; yading@10: } yading@10: cbp += cbp; yading@10: } yading@10: } yading@10: } yading@10: } else { yading@10: for (i = 0; i < 12; i++) yading@10: s->block_last_index[i] = -1; yading@10: } yading@10: } yading@10: yading@10: s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride] = mb_type; yading@10: yading@10: return 0; yading@10: } yading@10: yading@10: static av_cold int mpeg_decode_init(AVCodecContext *avctx) yading@10: { yading@10: Mpeg1Context *s = avctx->priv_data; yading@10: MpegEncContext *s2 = &s->mpeg_enc_ctx; yading@10: int i; yading@10: yading@10: /* we need some permutation to store matrices, yading@10: * until MPV_common_init() sets the real permutation. */ yading@10: for (i = 0; i < 64; i++) yading@10: s2->dsp.idct_permutation[i]=i; yading@10: yading@10: ff_MPV_decode_defaults(s2); yading@10: yading@10: s->mpeg_enc_ctx.avctx = avctx; yading@10: s->mpeg_enc_ctx.flags = avctx->flags; yading@10: s->mpeg_enc_ctx.flags2 = avctx->flags2; yading@10: ff_mpeg12_common_init(&s->mpeg_enc_ctx); yading@10: ff_mpeg12_init_vlcs(); yading@10: yading@10: s->mpeg_enc_ctx_allocated = 0; yading@10: s->mpeg_enc_ctx.picture_number = 0; yading@10: s->repeat_field = 0; yading@10: s->mpeg_enc_ctx.codec_id = avctx->codec->id; yading@10: avctx->color_range = AVCOL_RANGE_MPEG; yading@10: if (avctx->codec->id == AV_CODEC_ID_MPEG1VIDEO) yading@10: avctx->chroma_sample_location = AVCHROMA_LOC_CENTER; yading@10: else yading@10: avctx->chroma_sample_location = AVCHROMA_LOC_LEFT; yading@10: return 0; yading@10: } yading@10: yading@10: static int mpeg_decode_update_thread_context(AVCodecContext *avctx, const AVCodecContext *avctx_from) yading@10: { yading@10: Mpeg1Context *ctx = avctx->priv_data, *ctx_from = avctx_from->priv_data; yading@10: MpegEncContext *s = &ctx->mpeg_enc_ctx, *s1 = &ctx_from->mpeg_enc_ctx; yading@10: int err; yading@10: yading@10: if (avctx == avctx_from || !ctx_from->mpeg_enc_ctx_allocated || !s1->context_initialized) yading@10: return 0; yading@10: yading@10: err = ff_mpeg_update_thread_context(avctx, avctx_from); yading@10: if (err) return err; yading@10: yading@10: if (!ctx->mpeg_enc_ctx_allocated) yading@10: memcpy(s + 1, s1 + 1, sizeof(Mpeg1Context) - sizeof(MpegEncContext)); yading@10: yading@10: if (!(s->pict_type == AV_PICTURE_TYPE_B || s->low_delay)) yading@10: s->picture_number++; yading@10: yading@10: return 0; yading@10: } yading@10: yading@10: static void quant_matrix_rebuild(uint16_t *matrix, const uint8_t *old_perm, yading@10: const uint8_t *new_perm) yading@10: { yading@10: uint16_t temp_matrix[64]; yading@10: int i; yading@10: yading@10: memcpy(temp_matrix, matrix, 64 * sizeof(uint16_t)); yading@10: yading@10: for (i = 0; i < 64; i++) { yading@10: matrix[new_perm[i]] = temp_matrix[old_perm[i]]; yading@10: } yading@10: } yading@10: yading@10: static const enum AVPixelFormat mpeg1_hwaccel_pixfmt_list_420[] = { yading@10: #if CONFIG_MPEG_XVMC_DECODER yading@10: AV_PIX_FMT_XVMC_MPEG2_IDCT, yading@10: AV_PIX_FMT_XVMC_MPEG2_MC, yading@10: #endif yading@10: #if CONFIG_MPEG1_VDPAU_HWACCEL yading@10: AV_PIX_FMT_VDPAU_MPEG1, yading@10: #endif yading@10: AV_PIX_FMT_YUV420P, yading@10: AV_PIX_FMT_NONE yading@10: }; yading@10: yading@10: static const enum AVPixelFormat mpeg2_hwaccel_pixfmt_list_420[] = { yading@10: #if CONFIG_MPEG_XVMC_DECODER yading@10: AV_PIX_FMT_XVMC_MPEG2_IDCT, yading@10: AV_PIX_FMT_XVMC_MPEG2_MC, yading@10: #endif yading@10: #if CONFIG_MPEG2_VDPAU_HWACCEL yading@10: AV_PIX_FMT_VDPAU_MPEG2, yading@10: #endif yading@10: #if CONFIG_MPEG2_DXVA2_HWACCEL yading@10: AV_PIX_FMT_DXVA2_VLD, yading@10: #endif yading@10: #if CONFIG_MPEG2_VAAPI_HWACCEL yading@10: AV_PIX_FMT_VAAPI_VLD, yading@10: #endif yading@10: AV_PIX_FMT_YUV420P, yading@10: AV_PIX_FMT_NONE yading@10: }; yading@10: yading@10: static inline int uses_vdpau(AVCodecContext *avctx) { yading@10: return avctx->pix_fmt == AV_PIX_FMT_VDPAU_MPEG1 || avctx->pix_fmt == AV_PIX_FMT_VDPAU_MPEG2; yading@10: } yading@10: yading@10: static enum AVPixelFormat mpeg_get_pixelformat(AVCodecContext *avctx) yading@10: { yading@10: Mpeg1Context *s1 = avctx->priv_data; yading@10: MpegEncContext *s = &s1->mpeg_enc_ctx; yading@10: yading@10: if(s->chroma_format < 2) { yading@10: return ff_thread_get_format(avctx, yading@10: avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO ? yading@10: mpeg1_hwaccel_pixfmt_list_420 : yading@10: mpeg2_hwaccel_pixfmt_list_420); yading@10: } else if(s->chroma_format == 2) yading@10: return AV_PIX_FMT_YUV422P; yading@10: else yading@10: return AV_PIX_FMT_YUV444P; yading@10: } yading@10: yading@10: static void setup_hwaccel_for_pixfmt(AVCodecContext *avctx) yading@10: { yading@10: if (avctx->pix_fmt != AV_PIX_FMT_XVMC_MPEG2_IDCT && avctx->pix_fmt != AV_PIX_FMT_XVMC_MPEG2_MC) { yading@10: avctx->xvmc_acceleration = 0; yading@10: } else if (!avctx->xvmc_acceleration) { yading@10: avctx->xvmc_acceleration = 2; yading@10: } yading@10: avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt); yading@10: // until then pix_fmt may be changed right after codec init yading@10: if (avctx->pix_fmt == AV_PIX_FMT_XVMC_MPEG2_IDCT || yading@10: avctx->hwaccel || uses_vdpau(avctx)) yading@10: if (avctx->idct_algo == FF_IDCT_AUTO) yading@10: avctx->idct_algo = FF_IDCT_SIMPLE; yading@10: } yading@10: yading@10: /* Call this function when we know all parameters. yading@10: * It may be called in different places for MPEG-1 and MPEG-2. */ yading@10: static int mpeg_decode_postinit(AVCodecContext *avctx) yading@10: { yading@10: Mpeg1Context *s1 = avctx->priv_data; yading@10: MpegEncContext *s = &s1->mpeg_enc_ctx; yading@10: uint8_t old_permutation[64]; yading@10: yading@10: if ((s1->mpeg_enc_ctx_allocated == 0) || yading@10: avctx->coded_width != s->width || yading@10: avctx->coded_height != s->height || yading@10: s1->save_width != s->width || yading@10: s1->save_height != s->height || yading@10: s1->save_aspect_info != s->aspect_ratio_info || yading@10: s1->save_progressive_seq != s->progressive_sequence || yading@10: 0) yading@10: { yading@10: yading@10: if (s1->mpeg_enc_ctx_allocated) { yading@10: ParseContext pc = s->parse_context; yading@10: s->parse_context.buffer = 0; yading@10: ff_MPV_common_end(s); yading@10: s->parse_context = pc; yading@10: } yading@10: yading@10: if ((s->width == 0) || (s->height == 0)) yading@10: return -2; yading@10: yading@10: avcodec_set_dimensions(avctx, s->width, s->height); yading@10: if (avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->bit_rate) { yading@10: avctx->rc_max_rate = s->bit_rate; yading@10: } else if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO && s->bit_rate && yading@10: (s->bit_rate != 0x3FFFF*400 || s->vbv_delay != 0xFFFF)) { yading@10: avctx->bit_rate = s->bit_rate; yading@10: } yading@10: s1->save_aspect_info = s->aspect_ratio_info; yading@10: s1->save_width = s->width; yading@10: s1->save_height = s->height; yading@10: s1->save_progressive_seq = s->progressive_sequence; yading@10: yading@10: /* low_delay may be forced, in this case we will have B-frames yading@10: * that behave like P-frames. */ yading@10: avctx->has_b_frames = !s->low_delay; yading@10: yading@10: if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO) { yading@10: //MPEG-1 fps yading@10: avctx->time_base.den = ff_mpeg12_frame_rate_tab[s->frame_rate_index].num; yading@10: avctx->time_base.num = ff_mpeg12_frame_rate_tab[s->frame_rate_index].den; yading@10: //MPEG-1 aspect yading@10: avctx->sample_aspect_ratio = av_d2q(1.0/ff_mpeg1_aspect[s->aspect_ratio_info], 255); yading@10: avctx->ticks_per_frame=1; yading@10: } else {//MPEG-2 yading@10: //MPEG-2 fps yading@10: av_reduce(&s->avctx->time_base.den, yading@10: &s->avctx->time_base.num, yading@10: ff_mpeg12_frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num*2, yading@10: ff_mpeg12_frame_rate_tab[s->frame_rate_index].den * s1->frame_rate_ext.den, yading@10: 1 << 30); yading@10: avctx->ticks_per_frame = 2; yading@10: //MPEG-2 aspect yading@10: if (s->aspect_ratio_info > 1) { yading@10: AVRational dar = yading@10: av_mul_q(av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info], yading@10: (AVRational) {s1->pan_scan.width, s1->pan_scan.height}), yading@10: (AVRational) {s->width, s->height}); yading@10: yading@10: // we ignore the spec here and guess a bit as reality does not match the spec, see for example yading@10: // res_change_ffmpeg_aspect.ts and sequence-display-aspect.mpg yading@10: // issue1613, 621, 562 yading@10: if ((s1->pan_scan.width == 0) || (s1->pan_scan.height == 0) || yading@10: (av_cmp_q(dar, (AVRational) {4, 3}) && av_cmp_q(dar, (AVRational) {16, 9}))) { yading@10: s->avctx->sample_aspect_ratio = yading@10: av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info], yading@10: (AVRational) {s->width, s->height}); yading@10: } else { yading@10: s->avctx->sample_aspect_ratio = yading@10: av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info], yading@10: (AVRational) {s1->pan_scan.width, s1->pan_scan.height}); yading@10: //issue1613 4/3 16/9 -> 16/9 yading@10: //res_change_ffmpeg_aspect.ts 4/3 225/44 ->4/3 yading@10: //widescreen-issue562.mpg 4/3 16/9 -> 16/9 yading@10: // s->avctx->sample_aspect_ratio = av_mul_q(s->avctx->sample_aspect_ratio, (AVRational) {s->width, s->height}); yading@10: av_dlog(avctx, "A %d/%d\n", yading@10: ff_mpeg2_aspect[s->aspect_ratio_info].num, ff_mpeg2_aspect[s->aspect_ratio_info].den); yading@10: av_dlog(avctx, "B %d/%d\n", s->avctx->sample_aspect_ratio.num, yading@10: s->avctx->sample_aspect_ratio.den); yading@10: } yading@10: } else { yading@10: s->avctx->sample_aspect_ratio = yading@10: ff_mpeg2_aspect[s->aspect_ratio_info]; yading@10: } yading@10: } // MPEG-2 yading@10: yading@10: avctx->pix_fmt = mpeg_get_pixelformat(avctx); yading@10: setup_hwaccel_for_pixfmt(avctx); yading@10: yading@10: /* Quantization matrices may need reordering yading@10: * if DCT permutation is changed. */ yading@10: memcpy(old_permutation, s->dsp.idct_permutation, 64 * sizeof(uint8_t)); yading@10: yading@10: if (ff_MPV_common_init(s) < 0) yading@10: return -2; yading@10: yading@10: quant_matrix_rebuild(s->intra_matrix, old_permutation, s->dsp.idct_permutation); yading@10: quant_matrix_rebuild(s->inter_matrix, old_permutation, s->dsp.idct_permutation); yading@10: quant_matrix_rebuild(s->chroma_intra_matrix, old_permutation, s->dsp.idct_permutation); yading@10: quant_matrix_rebuild(s->chroma_inter_matrix, old_permutation, s->dsp.idct_permutation); yading@10: yading@10: s1->mpeg_enc_ctx_allocated = 1; yading@10: } yading@10: return 0; yading@10: } yading@10: yading@10: static int mpeg1_decode_picture(AVCodecContext *avctx, yading@10: const uint8_t *buf, int buf_size) yading@10: { yading@10: Mpeg1Context *s1 = avctx->priv_data; yading@10: MpegEncContext *s = &s1->mpeg_enc_ctx; yading@10: int ref, f_code, vbv_delay; yading@10: yading@10: init_get_bits(&s->gb, buf, buf_size*8); yading@10: yading@10: ref = get_bits(&s->gb, 10); /* temporal ref */ yading@10: s->pict_type = get_bits(&s->gb, 3); yading@10: if (s->pict_type == 0 || s->pict_type > 3) yading@10: return -1; yading@10: yading@10: vbv_delay = get_bits(&s->gb, 16); yading@10: s->vbv_delay = vbv_delay; yading@10: if (s->pict_type == AV_PICTURE_TYPE_P || s->pict_type == AV_PICTURE_TYPE_B) { yading@10: s->full_pel[0] = get_bits1(&s->gb); yading@10: f_code = get_bits(&s->gb, 3); yading@10: if (f_code == 0 && (avctx->err_recognition & (AV_EF_BITSTREAM|AV_EF_COMPLIANT))) yading@10: return -1; yading@10: f_code += !f_code; yading@10: s->mpeg_f_code[0][0] = f_code; yading@10: s->mpeg_f_code[0][1] = f_code; yading@10: } yading@10: if (s->pict_type == AV_PICTURE_TYPE_B) { yading@10: s->full_pel[1] = get_bits1(&s->gb); yading@10: f_code = get_bits(&s->gb, 3); yading@10: if (f_code == 0 && (avctx->err_recognition & (AV_EF_BITSTREAM|AV_EF_COMPLIANT))) yading@10: return -1; yading@10: f_code += !f_code; yading@10: s->mpeg_f_code[1][0] = f_code; yading@10: s->mpeg_f_code[1][1] = f_code; yading@10: } yading@10: s->current_picture.f.pict_type = s->pict_type; yading@10: s->current_picture.f.key_frame = s->pict_type == AV_PICTURE_TYPE_I; yading@10: yading@10: if (avctx->debug & FF_DEBUG_PICT_INFO) yading@10: av_log(avctx, AV_LOG_DEBUG, "vbv_delay %d, ref %d type:%d\n", vbv_delay, ref, s->pict_type); yading@10: yading@10: s->y_dc_scale = 8; yading@10: s->c_dc_scale = 8; yading@10: return 0; yading@10: } yading@10: yading@10: static void mpeg_decode_sequence_extension(Mpeg1Context *s1) yading@10: { yading@10: MpegEncContext *s= &s1->mpeg_enc_ctx; yading@10: int horiz_size_ext, vert_size_ext; yading@10: int bit_rate_ext; yading@10: yading@10: skip_bits(&s->gb, 1); /* profile and level esc*/ yading@10: s->avctx->profile = get_bits(&s->gb, 3); yading@10: s->avctx->level = get_bits(&s->gb, 4); yading@10: s->progressive_sequence = get_bits1(&s->gb); /* progressive_sequence */ yading@10: s->chroma_format = get_bits(&s->gb, 2); /* chroma_format 1=420, 2=422, 3=444 */ yading@10: horiz_size_ext = get_bits(&s->gb, 2); yading@10: vert_size_ext = get_bits(&s->gb, 2); yading@10: s->width |= (horiz_size_ext << 12); yading@10: s->height |= (vert_size_ext << 12); yading@10: bit_rate_ext = get_bits(&s->gb, 12); /* XXX: handle it */ yading@10: s->bit_rate += (bit_rate_ext << 18) * 400; yading@10: skip_bits1(&s->gb); /* marker */ yading@10: s->avctx->rc_buffer_size += get_bits(&s->gb, 8) * 1024 * 16 << 10; yading@10: yading@10: s->low_delay = get_bits1(&s->gb); yading@10: if (s->flags & CODEC_FLAG_LOW_DELAY) yading@10: s->low_delay = 1; yading@10: yading@10: s1->frame_rate_ext.num = get_bits(&s->gb, 2) + 1; yading@10: s1->frame_rate_ext.den = get_bits(&s->gb, 5) + 1; yading@10: yading@10: av_dlog(s->avctx, "sequence extension\n"); yading@10: s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG2VIDEO; yading@10: yading@10: if (s->avctx->debug & FF_DEBUG_PICT_INFO) yading@10: av_log(s->avctx, AV_LOG_DEBUG, "profile: %d, level: %d vbv buffer: %d, bitrate:%d\n", yading@10: s->avctx->profile, s->avctx->level, s->avctx->rc_buffer_size, s->bit_rate); yading@10: yading@10: } yading@10: yading@10: static void mpeg_decode_sequence_display_extension(Mpeg1Context *s1) yading@10: { yading@10: MpegEncContext *s = &s1->mpeg_enc_ctx; yading@10: int color_description, w, h; yading@10: yading@10: skip_bits(&s->gb, 3); /* video format */ yading@10: color_description = get_bits1(&s->gb); yading@10: if (color_description) { yading@10: s->avctx->color_primaries = get_bits(&s->gb, 8); yading@10: s->avctx->color_trc = get_bits(&s->gb, 8); yading@10: s->avctx->colorspace = get_bits(&s->gb, 8); yading@10: } yading@10: w = get_bits(&s->gb, 14); yading@10: skip_bits(&s->gb, 1); //marker yading@10: h = get_bits(&s->gb, 14); yading@10: // remaining 3 bits are zero padding yading@10: yading@10: s1->pan_scan.width = 16 * w; yading@10: s1->pan_scan.height = 16 * h; yading@10: yading@10: if (s->avctx->debug & FF_DEBUG_PICT_INFO) yading@10: av_log(s->avctx, AV_LOG_DEBUG, "sde w:%d, h:%d\n", w, h); yading@10: } yading@10: yading@10: static void mpeg_decode_picture_display_extension(Mpeg1Context *s1) yading@10: { yading@10: MpegEncContext *s = &s1->mpeg_enc_ctx; yading@10: int i, nofco; yading@10: yading@10: nofco = 1; yading@10: if (s->progressive_sequence) { yading@10: if (s->repeat_first_field) { yading@10: nofco++; yading@10: if (s->top_field_first) yading@10: nofco++; yading@10: } yading@10: } else { yading@10: if (s->picture_structure == PICT_FRAME) { yading@10: nofco++; yading@10: if (s->repeat_first_field) yading@10: nofco++; yading@10: } yading@10: } yading@10: for (i = 0; i < nofco; i++) { yading@10: s1->pan_scan.position[i][0] = get_sbits(&s->gb, 16); yading@10: skip_bits(&s->gb, 1); // marker yading@10: s1->pan_scan.position[i][1] = get_sbits(&s->gb, 16); yading@10: skip_bits(&s->gb, 1); // marker yading@10: } yading@10: yading@10: if (s->avctx->debug & FF_DEBUG_PICT_INFO) yading@10: av_log(s->avctx, AV_LOG_DEBUG, "pde (%d,%d) (%d,%d) (%d,%d)\n", yading@10: s1->pan_scan.position[0][0], s1->pan_scan.position[0][1], yading@10: s1->pan_scan.position[1][0], s1->pan_scan.position[1][1], yading@10: s1->pan_scan.position[2][0], s1->pan_scan.position[2][1]); yading@10: } yading@10: yading@10: static int load_matrix(MpegEncContext *s, uint16_t matrix0[64], uint16_t matrix1[64], int intra) yading@10: { yading@10: int i; yading@10: yading@10: for (i = 0; i < 64; i++) { yading@10: int j = s->dsp.idct_permutation[ff_zigzag_direct[i]]; yading@10: int v = get_bits(&s->gb, 8); yading@10: if (v == 0) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "matrix damaged\n"); yading@10: return -1; yading@10: } yading@10: if (intra && i == 0 && v != 8) { yading@10: av_log(s->avctx, AV_LOG_DEBUG, "intra matrix specifies invalid DC quantizer %d, ignoring\n", v); yading@10: v = 8; // needed by pink.mpg / issue1046 yading@10: } yading@10: matrix0[j] = v; yading@10: if (matrix1) yading@10: matrix1[j] = v; yading@10: } yading@10: return 0; yading@10: } yading@10: yading@10: static void mpeg_decode_quant_matrix_extension(MpegEncContext *s) yading@10: { yading@10: av_dlog(s->avctx, "matrix extension\n"); yading@10: yading@10: if (get_bits1(&s->gb)) load_matrix(s, s->chroma_intra_matrix, s->intra_matrix, 1); yading@10: if (get_bits1(&s->gb)) load_matrix(s, s->chroma_inter_matrix, s->inter_matrix, 0); yading@10: if (get_bits1(&s->gb)) load_matrix(s, s->chroma_intra_matrix, NULL , 1); yading@10: if (get_bits1(&s->gb)) load_matrix(s, s->chroma_inter_matrix, NULL , 0); yading@10: } yading@10: yading@10: static void mpeg_decode_picture_coding_extension(Mpeg1Context *s1) yading@10: { yading@10: MpegEncContext *s = &s1->mpeg_enc_ctx; yading@10: yading@10: s->full_pel[0] = s->full_pel[1] = 0; yading@10: s->mpeg_f_code[0][0] = get_bits(&s->gb, 4); yading@10: s->mpeg_f_code[0][1] = get_bits(&s->gb, 4); yading@10: s->mpeg_f_code[1][0] = get_bits(&s->gb, 4); yading@10: s->mpeg_f_code[1][1] = get_bits(&s->gb, 4); yading@10: if (!s->pict_type && s1->mpeg_enc_ctx_allocated) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "Missing picture start code, guessing missing values\n"); yading@10: if (s->mpeg_f_code[1][0] == 15 && s->mpeg_f_code[1][1] == 15) { yading@10: if (s->mpeg_f_code[0][0] == 15 && s->mpeg_f_code[0][1] == 15) yading@10: s->pict_type = AV_PICTURE_TYPE_I; yading@10: else yading@10: s->pict_type = AV_PICTURE_TYPE_P; yading@10: } else yading@10: s->pict_type = AV_PICTURE_TYPE_B; yading@10: s->current_picture.f.pict_type = s->pict_type; yading@10: s->current_picture.f.key_frame = s->pict_type == AV_PICTURE_TYPE_I; yading@10: } yading@10: s->mpeg_f_code[0][0] += !s->mpeg_f_code[0][0]; yading@10: s->mpeg_f_code[0][1] += !s->mpeg_f_code[0][1]; yading@10: s->mpeg_f_code[1][0] += !s->mpeg_f_code[1][0]; yading@10: s->mpeg_f_code[1][1] += !s->mpeg_f_code[1][1]; yading@10: yading@10: s->intra_dc_precision = get_bits(&s->gb, 2); yading@10: s->picture_structure = get_bits(&s->gb, 2); yading@10: s->top_field_first = get_bits1(&s->gb); yading@10: s->frame_pred_frame_dct = get_bits1(&s->gb); yading@10: s->concealment_motion_vectors = get_bits1(&s->gb); yading@10: s->q_scale_type = get_bits1(&s->gb); yading@10: s->intra_vlc_format = get_bits1(&s->gb); yading@10: s->alternate_scan = get_bits1(&s->gb); yading@10: s->repeat_first_field = get_bits1(&s->gb); yading@10: s->chroma_420_type = get_bits1(&s->gb); yading@10: s->progressive_frame = get_bits1(&s->gb); yading@10: yading@10: yading@10: if (s->alternate_scan) { yading@10: ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable, ff_alternate_vertical_scan); yading@10: ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable, ff_alternate_vertical_scan); yading@10: } else { yading@10: ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable, ff_zigzag_direct); yading@10: ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct); yading@10: } yading@10: yading@10: /* composite display not parsed */ yading@10: av_dlog(s->avctx, "intra_dc_precision=%d\n", s->intra_dc_precision); yading@10: av_dlog(s->avctx, "picture_structure=%d\n", s->picture_structure); yading@10: av_dlog(s->avctx, "top field first=%d\n", s->top_field_first); yading@10: av_dlog(s->avctx, "repeat first field=%d\n", s->repeat_first_field); yading@10: av_dlog(s->avctx, "conceal=%d\n", s->concealment_motion_vectors); yading@10: av_dlog(s->avctx, "intra_vlc_format=%d\n", s->intra_vlc_format); yading@10: av_dlog(s->avctx, "alternate_scan=%d\n", s->alternate_scan); yading@10: av_dlog(s->avctx, "frame_pred_frame_dct=%d\n", s->frame_pred_frame_dct); yading@10: av_dlog(s->avctx, "progressive_frame=%d\n", s->progressive_frame); yading@10: } yading@10: yading@10: static int mpeg_field_start(MpegEncContext *s, const uint8_t *buf, int buf_size) yading@10: { yading@10: AVCodecContext *avctx = s->avctx; yading@10: Mpeg1Context *s1 = (Mpeg1Context*)s; yading@10: yading@10: /* start frame decoding */ yading@10: if (s->first_field || s->picture_structure == PICT_FRAME) { yading@10: AVFrameSideData *pan_scan; yading@10: yading@10: if (ff_MPV_frame_start(s, avctx) < 0) yading@10: return -1; yading@10: yading@10: ff_mpeg_er_frame_start(s); yading@10: yading@10: /* first check if we must repeat the frame */ yading@10: s->current_picture_ptr->f.repeat_pict = 0; yading@10: if (s->repeat_first_field) { yading@10: if (s->progressive_sequence) { yading@10: if (s->top_field_first) yading@10: s->current_picture_ptr->f.repeat_pict = 4; yading@10: else yading@10: s->current_picture_ptr->f.repeat_pict = 2; yading@10: } else if (s->progressive_frame) { yading@10: s->current_picture_ptr->f.repeat_pict = 1; yading@10: } yading@10: } yading@10: yading@10: pan_scan = av_frame_new_side_data(&s->current_picture_ptr->f, yading@10: AV_FRAME_DATA_PANSCAN, yading@10: sizeof(s1->pan_scan)); yading@10: if (!pan_scan) yading@10: return AVERROR(ENOMEM); yading@10: memcpy(pan_scan->data, &s1->pan_scan, sizeof(s1->pan_scan)); yading@10: yading@10: if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_FRAME)) yading@10: ff_thread_finish_setup(avctx); yading@10: } else { // second field yading@10: int i; yading@10: yading@10: if (!s->current_picture_ptr) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "first field missing\n"); yading@10: return -1; yading@10: } yading@10: yading@10: if (s->avctx->hwaccel && yading@10: (s->avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD)) { yading@10: if (s->avctx->hwaccel->end_frame(s->avctx) < 0) yading@10: av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode first field\n"); yading@10: } yading@10: yading@10: for (i = 0; i < 4; i++) { yading@10: s->current_picture.f.data[i] = s->current_picture_ptr->f.data[i]; yading@10: if (s->picture_structure == PICT_BOTTOM_FIELD) { yading@10: s->current_picture.f.data[i] += s->current_picture_ptr->f.linesize[i]; yading@10: } yading@10: } yading@10: } yading@10: yading@10: if (avctx->hwaccel) { yading@10: if (avctx->hwaccel->start_frame(avctx, buf, buf_size) < 0) yading@10: return -1; yading@10: } yading@10: yading@10: // MPV_frame_start will call this function too, yading@10: // but we need to call it on every field yading@10: if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration) yading@10: if (ff_xvmc_field_start(s, avctx) < 0) yading@10: return -1; yading@10: yading@10: return 0; yading@10: } yading@10: yading@10: #define DECODE_SLICE_ERROR -1 yading@10: #define DECODE_SLICE_OK 0 yading@10: yading@10: /** yading@10: * Decode a slice. yading@10: * MpegEncContext.mb_y must be set to the MB row from the startcode. yading@10: * @return DECODE_SLICE_ERROR if the slice is damaged, yading@10: * DECODE_SLICE_OK if this slice is OK yading@10: */ yading@10: static int mpeg_decode_slice(MpegEncContext *s, int mb_y, yading@10: const uint8_t **buf, int buf_size) yading@10: { yading@10: AVCodecContext *avctx = s->avctx; yading@10: const int lowres = s->avctx->lowres; yading@10: const int field_pic = s->picture_structure != PICT_FRAME; yading@10: yading@10: s->resync_mb_x = yading@10: s->resync_mb_y = -1; yading@10: yading@10: av_assert0(mb_y < s->mb_height); yading@10: yading@10: init_get_bits(&s->gb, *buf, buf_size * 8); yading@10: if(s->codec_id != AV_CODEC_ID_MPEG1VIDEO && s->mb_height > 2800/16) yading@10: skip_bits(&s->gb, 3); yading@10: yading@10: ff_mpeg1_clean_buffers(s); yading@10: s->interlaced_dct = 0; yading@10: yading@10: s->qscale = get_qscale(s); yading@10: yading@10: if (s->qscale == 0) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "qscale == 0\n"); yading@10: return -1; yading@10: } yading@10: yading@10: /* extra slice info */ yading@10: while (get_bits1(&s->gb) != 0) { yading@10: skip_bits(&s->gb, 8); yading@10: } yading@10: yading@10: s->mb_x = 0; yading@10: yading@10: if (mb_y == 0 && s->codec_tag == AV_RL32("SLIF")) { yading@10: skip_bits1(&s->gb); yading@10: } else { yading@10: while (get_bits_left(&s->gb) > 0) { yading@10: int code = get_vlc2(&s->gb, ff_mbincr_vlc.table, yading@10: MBINCR_VLC_BITS, 2); yading@10: if (code < 0) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "first mb_incr damaged\n"); yading@10: return -1; yading@10: } yading@10: if (code >= 33) { yading@10: if (code == 33) { yading@10: s->mb_x += 33; yading@10: } yading@10: /* otherwise, stuffing, nothing to do */ yading@10: } else { yading@10: s->mb_x += code; yading@10: break; yading@10: } yading@10: } yading@10: } yading@10: yading@10: if (s->mb_x >= (unsigned)s->mb_width) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "initial skip overflow\n"); yading@10: return -1; yading@10: } yading@10: yading@10: if (avctx->hwaccel) { yading@10: const uint8_t *buf_end, *buf_start = *buf - 4; /* include start_code */ yading@10: int start_code = -1; yading@10: buf_end = avpriv_find_start_code(buf_start + 2, *buf + buf_size, &start_code); yading@10: if (buf_end < *buf + buf_size) yading@10: buf_end -= 4; yading@10: s->mb_y = mb_y; yading@10: if (avctx->hwaccel->decode_slice(avctx, buf_start, buf_end - buf_start) < 0) yading@10: return DECODE_SLICE_ERROR; yading@10: *buf = buf_end; yading@10: return DECODE_SLICE_OK; yading@10: } yading@10: yading@10: s->resync_mb_x = s->mb_x; yading@10: s->resync_mb_y = s->mb_y = mb_y; yading@10: s->mb_skip_run = 0; yading@10: ff_init_block_index(s); yading@10: yading@10: if (s->mb_y == 0 && s->mb_x == 0 && (s->first_field || s->picture_structure == PICT_FRAME)) { yading@10: if (s->avctx->debug & FF_DEBUG_PICT_INFO) { yading@10: av_log(s->avctx, AV_LOG_DEBUG, "qp:%d fc:%2d%2d%2d%2d %s %s %s %s %s dc:%d pstruct:%d fdct:%d cmv:%d qtype:%d ivlc:%d rff:%d %s\n", yading@10: s->qscale, s->mpeg_f_code[0][0], s->mpeg_f_code[0][1], s->mpeg_f_code[1][0], s->mpeg_f_code[1][1], yading@10: s->pict_type == AV_PICTURE_TYPE_I ? "I" : (s->pict_type == AV_PICTURE_TYPE_P ? "P" : (s->pict_type == AV_PICTURE_TYPE_B ? "B" : "S")), yading@10: s->progressive_sequence ? "ps" :"", s->progressive_frame ? "pf" : "", s->alternate_scan ? "alt" :"", s->top_field_first ? "top" :"", yading@10: s->intra_dc_precision, s->picture_structure, s->frame_pred_frame_dct, s->concealment_motion_vectors, yading@10: s->q_scale_type, s->intra_vlc_format, s->repeat_first_field, s->chroma_420_type ? "420" :""); yading@10: } yading@10: } yading@10: yading@10: for (;;) { yading@10: // If 1, we memcpy blocks in xvmcvideo. yading@10: if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1) yading@10: ff_xvmc_init_block(s); // set s->block yading@10: yading@10: if (mpeg_decode_mb(s, s->block) < 0) yading@10: return -1; yading@10: yading@10: if (s->current_picture.motion_val[0] && !s->encoding) { // note motion_val is normally NULL unless we want to extract the MVs yading@10: const int wrap = s->b8_stride; yading@10: int xy = s->mb_x * 2 + s->mb_y * 2 * wrap; yading@10: int b8_xy = 4 * (s->mb_x + s->mb_y * s->mb_stride); yading@10: int motion_x, motion_y, dir, i; yading@10: yading@10: for (i = 0; i < 2; i++) { yading@10: for (dir = 0; dir < 2; dir++) { yading@10: if (s->mb_intra || (dir == 1 && s->pict_type != AV_PICTURE_TYPE_B)) { yading@10: motion_x = motion_y = 0; yading@10: } else if (s->mv_type == MV_TYPE_16X16 || (s->mv_type == MV_TYPE_FIELD && field_pic)) { yading@10: motion_x = s->mv[dir][0][0]; yading@10: motion_y = s->mv[dir][0][1]; yading@10: } else /*if ((s->mv_type == MV_TYPE_FIELD) || (s->mv_type == MV_TYPE_16X8))*/ { yading@10: motion_x = s->mv[dir][i][0]; yading@10: motion_y = s->mv[dir][i][1]; yading@10: } yading@10: yading@10: s->current_picture.motion_val[dir][xy ][0] = motion_x; yading@10: s->current_picture.motion_val[dir][xy ][1] = motion_y; yading@10: s->current_picture.motion_val[dir][xy + 1][0] = motion_x; yading@10: s->current_picture.motion_val[dir][xy + 1][1] = motion_y; yading@10: s->current_picture.ref_index [dir][b8_xy ] = yading@10: s->current_picture.ref_index [dir][b8_xy + 1] = s->field_select[dir][i]; yading@10: av_assert2(s->field_select[dir][i] == 0 || s->field_select[dir][i] == 1); yading@10: } yading@10: xy += wrap; yading@10: b8_xy +=2; yading@10: } yading@10: } yading@10: yading@10: s->dest[0] += 16 >> lowres; yading@10: s->dest[1] +=(16 >> lowres) >> s->chroma_x_shift; yading@10: s->dest[2] +=(16 >> lowres) >> s->chroma_x_shift; yading@10: yading@10: ff_MPV_decode_mb(s, s->block); yading@10: yading@10: if (++s->mb_x >= s->mb_width) { yading@10: const int mb_size = 16 >> s->avctx->lowres; yading@10: yading@10: ff_mpeg_draw_horiz_band(s, mb_size*(s->mb_y >> field_pic), mb_size); yading@10: ff_MPV_report_decode_progress(s); yading@10: yading@10: s->mb_x = 0; yading@10: s->mb_y += 1 << field_pic; yading@10: yading@10: if (s->mb_y >= s->mb_height) { yading@10: int left = get_bits_left(&s->gb); yading@10: int is_d10 = s->chroma_format == 2 && s->pict_type == AV_PICTURE_TYPE_I && avctx->profile == 0 && avctx->level == 5 yading@10: && s->intra_dc_precision == 2 && s->q_scale_type == 1 && s->alternate_scan == 0 yading@10: && s->progressive_frame == 0 /* vbv_delay == 0xBBB || 0xE10*/; yading@10: yading@10: if (left >= 32 && !is_d10) { yading@10: GetBitContext gb = s->gb; yading@10: align_get_bits(&gb); yading@10: if (show_bits(&gb, 24) == 0x060E2B) { yading@10: av_log(avctx, AV_LOG_DEBUG, "Invalid MXF data found in video stream\n"); yading@10: is_d10 = 1; yading@10: } yading@10: } yading@10: yading@10: if (left < 0 || (left && show_bits(&s->gb, FFMIN(left, 23)) && !is_d10) yading@10: || ((avctx->err_recognition & (AV_EF_BITSTREAM | AV_EF_AGGRESSIVE)) && left > 8)) { yading@10: av_log(avctx, AV_LOG_ERROR, "end mismatch left=%d %0X\n", left, show_bits(&s->gb, FFMIN(left, 23))); yading@10: return -1; yading@10: } else yading@10: goto eos; yading@10: } yading@10: yading@10: ff_init_block_index(s); yading@10: } yading@10: yading@10: /* skip mb handling */ yading@10: if (s->mb_skip_run == -1) { yading@10: /* read increment again */ yading@10: s->mb_skip_run = 0; yading@10: for (;;) { yading@10: int code = get_vlc2(&s->gb, ff_mbincr_vlc.table, yading@10: MBINCR_VLC_BITS, 2); yading@10: if (code < 0) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "mb incr damaged\n"); yading@10: return -1; yading@10: } yading@10: if (code >= 33) { yading@10: if (code == 33) { yading@10: s->mb_skip_run += 33; yading@10: } else if (code == 35) { yading@10: if (s->mb_skip_run != 0 || show_bits(&s->gb, 15) != 0) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "slice mismatch\n"); yading@10: return -1; yading@10: } yading@10: goto eos; /* end of slice */ yading@10: } yading@10: /* otherwise, stuffing, nothing to do */ yading@10: } else { yading@10: s->mb_skip_run += code; yading@10: break; yading@10: } yading@10: } yading@10: if (s->mb_skip_run) { yading@10: int i; yading@10: if (s->pict_type == AV_PICTURE_TYPE_I) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "skipped MB in I frame at %d %d\n", s->mb_x, s->mb_y); yading@10: return -1; yading@10: } yading@10: yading@10: /* skip mb */ yading@10: s->mb_intra = 0; yading@10: for (i = 0; i < 12; i++) yading@10: s->block_last_index[i] = -1; yading@10: if (s->picture_structure == PICT_FRAME) yading@10: s->mv_type = MV_TYPE_16X16; yading@10: else yading@10: s->mv_type = MV_TYPE_FIELD; yading@10: if (s->pict_type == AV_PICTURE_TYPE_P) { yading@10: /* if P type, zero motion vector is implied */ yading@10: s->mv_dir = MV_DIR_FORWARD; yading@10: s->mv[0][0][0] = s->mv[0][0][1] = 0; yading@10: s->last_mv[0][0][0] = s->last_mv[0][0][1] = 0; yading@10: s->last_mv[0][1][0] = s->last_mv[0][1][1] = 0; yading@10: s->field_select[0][0] = (s->picture_structure - 1) & 1; yading@10: } else { yading@10: /* if B type, reuse previous vectors and directions */ yading@10: s->mv[0][0][0] = s->last_mv[0][0][0]; yading@10: s->mv[0][0][1] = s->last_mv[0][0][1]; yading@10: s->mv[1][0][0] = s->last_mv[1][0][0]; yading@10: s->mv[1][0][1] = s->last_mv[1][0][1]; yading@10: } yading@10: } yading@10: } yading@10: } yading@10: eos: // end of slice yading@10: *buf += (get_bits_count(&s->gb)-1)/8; yading@10: av_dlog(s, "y %d %d %d %d\n", s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y); yading@10: return 0; yading@10: } yading@10: yading@10: static int slice_decode_thread(AVCodecContext *c, void *arg) yading@10: { yading@10: MpegEncContext *s = *(void**)arg; yading@10: const uint8_t *buf = s->gb.buffer; yading@10: int mb_y = s->start_mb_y; yading@10: const int field_pic = s->picture_structure != PICT_FRAME; yading@10: yading@10: s->er.error_count = (3 * (s->end_mb_y - s->start_mb_y) * s->mb_width) >> field_pic; yading@10: yading@10: for (;;) { yading@10: uint32_t start_code; yading@10: int ret; yading@10: yading@10: ret = mpeg_decode_slice(s, mb_y, &buf, s->gb.buffer_end - buf); yading@10: emms_c(); yading@10: av_dlog(c, "ret:%d resync:%d/%d mb:%d/%d ts:%d/%d ec:%d\n", yading@10: ret, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, yading@10: s->start_mb_y, s->end_mb_y, s->er.error_count); yading@10: if (ret < 0) { yading@10: if (c->err_recognition & AV_EF_EXPLODE) yading@10: return ret; yading@10: if (s->resync_mb_x >= 0 && s->resync_mb_y >= 0) yading@10: ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, ER_AC_ERROR | ER_DC_ERROR | ER_MV_ERROR); yading@10: } else { yading@10: ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_AC_END | ER_DC_END | ER_MV_END); yading@10: } yading@10: yading@10: if (s->mb_y == s->end_mb_y) yading@10: return 0; yading@10: yading@10: start_code = -1; yading@10: buf = avpriv_find_start_code(buf, s->gb.buffer_end, &start_code); yading@10: mb_y= start_code - SLICE_MIN_START_CODE; yading@10: if(s->codec_id != AV_CODEC_ID_MPEG1VIDEO && s->mb_height > 2800/16) yading@10: mb_y += (*buf&0xE0)<<2; yading@10: mb_y <<= field_pic; yading@10: if (s->picture_structure == PICT_BOTTOM_FIELD) yading@10: mb_y++; yading@10: if (mb_y < 0 || mb_y >= s->end_mb_y) yading@10: return -1; yading@10: } yading@10: } yading@10: yading@10: /** yading@10: * Handle slice ends. yading@10: * @return 1 if it seems to be the last slice yading@10: */ yading@10: static int slice_end(AVCodecContext *avctx, AVFrame *pict) yading@10: { yading@10: Mpeg1Context *s1 = avctx->priv_data; yading@10: MpegEncContext *s = &s1->mpeg_enc_ctx; yading@10: yading@10: if (!s1->mpeg_enc_ctx_allocated || !s->current_picture_ptr) yading@10: return 0; yading@10: yading@10: if (s->avctx->hwaccel) { yading@10: if (s->avctx->hwaccel->end_frame(s->avctx) < 0) yading@10: av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n"); yading@10: } yading@10: yading@10: if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration) yading@10: ff_xvmc_field_end(s); yading@10: yading@10: /* end of slice reached */ yading@10: if (/*s->mb_y << field_pic == s->mb_height &&*/ !s->first_field && !s->first_slice) { yading@10: /* end of image */ yading@10: yading@10: ff_er_frame_end(&s->er); yading@10: yading@10: ff_MPV_frame_end(s); yading@10: yading@10: if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) { yading@10: int ret = av_frame_ref(pict, &s->current_picture_ptr->f); yading@10: if (ret < 0) yading@10: return ret; yading@10: ff_print_debug_info(s, s->current_picture_ptr, pict); yading@10: ff_mpv_export_qp_table(s, pict, s->current_picture_ptr, FF_QSCALE_TYPE_MPEG2); yading@10: } else { yading@10: if (avctx->active_thread_type & FF_THREAD_FRAME) yading@10: s->picture_number++; yading@10: /* latency of 1 frame for I- and P-frames */ yading@10: /* XXX: use another variable than picture_number */ yading@10: if (s->last_picture_ptr != NULL) { yading@10: int ret = av_frame_ref(pict, &s->last_picture_ptr->f); yading@10: if (ret < 0) yading@10: return ret; yading@10: ff_print_debug_info(s, s->last_picture_ptr, pict); yading@10: ff_mpv_export_qp_table(s, pict, s->last_picture_ptr, FF_QSCALE_TYPE_MPEG2); yading@10: } yading@10: } yading@10: yading@10: return 1; yading@10: } else { yading@10: return 0; yading@10: } yading@10: } yading@10: yading@10: static int mpeg1_decode_sequence(AVCodecContext *avctx, yading@10: const uint8_t *buf, int buf_size) yading@10: { yading@10: Mpeg1Context *s1 = avctx->priv_data; yading@10: MpegEncContext *s = &s1->mpeg_enc_ctx; yading@10: int width, height; yading@10: int i, v, j; yading@10: yading@10: init_get_bits(&s->gb, buf, buf_size*8); yading@10: yading@10: width = get_bits(&s->gb, 12); yading@10: height = get_bits(&s->gb, 12); yading@10: if (width == 0 || height == 0) { yading@10: av_log(avctx, AV_LOG_WARNING, "Invalid horizontal or vertical size " yading@10: "value.\n"); yading@10: if (avctx->err_recognition & (AV_EF_BITSTREAM | AV_EF_COMPLIANT)) yading@10: return AVERROR_INVALIDDATA; yading@10: } yading@10: s->aspect_ratio_info = get_bits(&s->gb, 4); yading@10: if (s->aspect_ratio_info == 0) { yading@10: av_log(avctx, AV_LOG_ERROR, "aspect ratio has forbidden 0 value\n"); yading@10: if (avctx->err_recognition & (AV_EF_BITSTREAM | AV_EF_COMPLIANT)) yading@10: return -1; yading@10: } yading@10: s->frame_rate_index = get_bits(&s->gb, 4); yading@10: if (s->frame_rate_index == 0 || s->frame_rate_index > 13) yading@10: return -1; yading@10: s->bit_rate = get_bits(&s->gb, 18) * 400; yading@10: if (get_bits1(&s->gb) == 0) /* marker */ yading@10: return -1; yading@10: s->width = width; yading@10: s->height = height; yading@10: yading@10: s->avctx->rc_buffer_size = get_bits(&s->gb, 10) * 1024 * 16; yading@10: skip_bits(&s->gb, 1); yading@10: yading@10: /* get matrix */ yading@10: if (get_bits1(&s->gb)) { yading@10: load_matrix(s, s->chroma_intra_matrix, s->intra_matrix, 1); yading@10: } else { yading@10: for (i = 0; i < 64; i++) { yading@10: j = s->dsp.idct_permutation[i]; yading@10: v = ff_mpeg1_default_intra_matrix[i]; yading@10: s->intra_matrix[j] = v; yading@10: s->chroma_intra_matrix[j] = v; yading@10: } yading@10: } yading@10: if (get_bits1(&s->gb)) { yading@10: load_matrix(s, s->chroma_inter_matrix, s->inter_matrix, 0); yading@10: } else { yading@10: for (i = 0; i < 64; i++) { yading@10: int j = s->dsp.idct_permutation[i]; yading@10: v = ff_mpeg1_default_non_intra_matrix[i]; yading@10: s->inter_matrix[j] = v; yading@10: s->chroma_inter_matrix[j] = v; yading@10: } yading@10: } yading@10: yading@10: if (show_bits(&s->gb, 23) != 0) { yading@10: av_log(s->avctx, AV_LOG_ERROR, "sequence header damaged\n"); yading@10: return -1; yading@10: } yading@10: yading@10: /* we set MPEG-2 parameters so that it emulates MPEG-1 */ yading@10: s->progressive_sequence = 1; yading@10: s->progressive_frame = 1; yading@10: s->picture_structure = PICT_FRAME; yading@10: s->first_field = 0; yading@10: s->frame_pred_frame_dct = 1; yading@10: s->chroma_format = 1; yading@10: s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG1VIDEO; yading@10: s->out_format = FMT_MPEG1; yading@10: s->swap_uv = 0; // AFAIK VCR2 does not have SEQ_HEADER yading@10: if (s->flags & CODEC_FLAG_LOW_DELAY) yading@10: s->low_delay = 1; yading@10: yading@10: if (s->avctx->debug & FF_DEBUG_PICT_INFO) yading@10: av_log(s->avctx, AV_LOG_DEBUG, "vbv buffer: %d, bitrate:%d\n", yading@10: s->avctx->rc_buffer_size, s->bit_rate); yading@10: yading@10: return 0; yading@10: } yading@10: yading@10: static int vcr2_init_sequence(AVCodecContext *avctx) yading@10: { yading@10: Mpeg1Context *s1 = avctx->priv_data; yading@10: MpegEncContext *s = &s1->mpeg_enc_ctx; yading@10: int i, v; yading@10: yading@10: /* start new MPEG-1 context decoding */ yading@10: s->out_format = FMT_MPEG1; yading@10: if (s1->mpeg_enc_ctx_allocated) { yading@10: ff_MPV_common_end(s); yading@10: } yading@10: s->width = avctx->coded_width; yading@10: s->height = avctx->coded_height; yading@10: avctx->has_b_frames = 0; // true? yading@10: s->low_delay = 1; yading@10: yading@10: avctx->pix_fmt = mpeg_get_pixelformat(avctx); yading@10: setup_hwaccel_for_pixfmt(avctx); yading@10: yading@10: if (ff_MPV_common_init(s) < 0) yading@10: return -1; yading@10: s1->mpeg_enc_ctx_allocated = 1; yading@10: yading@10: for (i = 0; i < 64; i++) { yading@10: int j = s->dsp.idct_permutation[i]; yading@10: v = ff_mpeg1_default_intra_matrix[i]; yading@10: s->intra_matrix[j] = v; yading@10: s->chroma_intra_matrix[j] = v; yading@10: yading@10: v = ff_mpeg1_default_non_intra_matrix[i]; yading@10: s->inter_matrix[j] = v; yading@10: s->chroma_inter_matrix[j] = v; yading@10: } yading@10: yading@10: s->progressive_sequence = 1; yading@10: s->progressive_frame = 1; yading@10: s->picture_structure = PICT_FRAME; yading@10: s->first_field = 0; yading@10: s->frame_pred_frame_dct = 1; yading@10: s->chroma_format = 1; yading@10: if (s->codec_tag == AV_RL32("BW10")) { yading@10: s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG1VIDEO; yading@10: } else { yading@10: exchange_uv(s); // common init reset pblocks, so we swap them here yading@10: s->swap_uv = 1; // in case of xvmc we need to swap uv for each MB yading@10: s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG2VIDEO; yading@10: } yading@10: s1->save_width = s->width; yading@10: s1->save_height = s->height; yading@10: s1->save_progressive_seq = s->progressive_sequence; yading@10: return 0; yading@10: } yading@10: yading@10: yading@10: static void mpeg_decode_user_data(AVCodecContext *avctx, yading@10: const uint8_t *p, int buf_size) yading@10: { yading@10: Mpeg1Context *s = avctx->priv_data; yading@10: const uint8_t *buf_end = p + buf_size; yading@10: yading@10: if(buf_size > 29){ yading@10: int i; yading@10: for(i=0; i<20; i++) yading@10: if(!memcmp(p+i, "\0TMPGEXS\0", 9)){ yading@10: s->tmpgexs= 1; yading@10: } yading@10: yading@10: /* for(i=0; !(!p[i-2] && !p[i-1] && p[i]==1) && i= 5 && yading@10: p[0] == 'D' && p[1] == 'T' && p[2] == 'G' && p[3] == '1') { yading@10: int flags = p[4]; yading@10: p += 5; yading@10: if (flags & 0x80) { yading@10: /* skip event id */ yading@10: p += 2; yading@10: } yading@10: if (flags & 0x40) { yading@10: if (buf_end - p < 1) yading@10: return; yading@10: avctx->dtg_active_format = p[0] & 0x0f; yading@10: } yading@10: } yading@10: } yading@10: yading@10: static void mpeg_decode_gop(AVCodecContext *avctx, yading@10: const uint8_t *buf, int buf_size) yading@10: { yading@10: Mpeg1Context *s1 = avctx->priv_data; yading@10: MpegEncContext *s = &s1->mpeg_enc_ctx; yading@10: int broken_link; yading@10: int64_t tc; yading@10: yading@10: init_get_bits(&s->gb, buf, buf_size*8); yading@10: yading@10: tc = avctx->timecode_frame_start = get_bits(&s->gb, 25); yading@10: yading@10: s->closed_gop = get_bits1(&s->gb); yading@10: /*broken_link indicate that after editing the yading@10: reference frames of the first B-Frames after GOP I-Frame yading@10: are missing (open gop)*/ yading@10: broken_link = get_bits1(&s->gb); yading@10: yading@10: if (s->avctx->debug & FF_DEBUG_PICT_INFO) { yading@10: char tcbuf[AV_TIMECODE_STR_SIZE]; yading@10: av_timecode_make_mpeg_tc_string(tcbuf, tc); yading@10: av_log(s->avctx, AV_LOG_DEBUG, yading@10: "GOP (%s) closed_gop=%d broken_link=%d\n", yading@10: tcbuf, s->closed_gop, broken_link); yading@10: } yading@10: } yading@10: yading@10: static int decode_chunks(AVCodecContext *avctx, yading@10: AVFrame *picture, int *got_output, yading@10: const uint8_t *buf, int buf_size) yading@10: { yading@10: Mpeg1Context *s = avctx->priv_data; yading@10: MpegEncContext *s2 = &s->mpeg_enc_ctx; yading@10: const uint8_t *buf_ptr = buf; yading@10: const uint8_t *buf_end = buf + buf_size; yading@10: int ret, input_size; yading@10: int last_code = 0; yading@10: int picture_start_code_seen = 0; yading@10: yading@10: for (;;) { yading@10: /* find next start code */ yading@10: uint32_t start_code = -1; yading@10: buf_ptr = avpriv_find_start_code(buf_ptr, buf_end, &start_code); yading@10: if (start_code > 0x1ff) { yading@10: if (s2->pict_type != AV_PICTURE_TYPE_B || avctx->skip_frame <= AVDISCARD_DEFAULT) { yading@10: if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE)) { yading@10: int i; yading@10: av_assert0(avctx->thread_count > 1); yading@10: yading@10: avctx->execute(avctx, slice_decode_thread, &s2->thread_context[0], NULL, s->slice_count, sizeof(void*)); yading@10: for (i = 0; i < s->slice_count; i++) yading@10: s2->er.error_count += s2->thread_context[i]->er.error_count; yading@10: } yading@10: yading@10: if ((CONFIG_MPEG_VDPAU_DECODER || CONFIG_MPEG1_VDPAU_DECODER) yading@10: && uses_vdpau(avctx)) yading@10: ff_vdpau_mpeg_picture_complete(s2, buf, buf_size, s->slice_count); yading@10: yading@10: ret = slice_end(avctx, picture); yading@10: if (ret < 0) yading@10: return ret; yading@10: else if (ret) { yading@10: if (s2->last_picture_ptr || s2->low_delay) //FIXME merge with the stuff in mpeg_decode_slice yading@10: *got_output = 1; yading@10: } yading@10: } yading@10: s2->pict_type = 0; yading@10: return FFMAX(0, buf_ptr - buf - s2->parse_context.last_index); yading@10: } yading@10: yading@10: input_size = buf_end - buf_ptr; yading@10: yading@10: if (avctx->debug & FF_DEBUG_STARTCODE) { yading@10: av_log(avctx, AV_LOG_DEBUG, "%3X at %td left %d\n", start_code, buf_ptr-buf, input_size); yading@10: } yading@10: yading@10: /* prepare data for next start code */ yading@10: switch (start_code) { yading@10: case SEQ_START_CODE: yading@10: if (last_code == 0) { yading@10: mpeg1_decode_sequence(avctx, buf_ptr, input_size); yading@10: if(buf != avctx->extradata) yading@10: s->sync=1; yading@10: } else { yading@10: av_log(avctx, AV_LOG_ERROR, "ignoring SEQ_START_CODE after %X\n", last_code); yading@10: if (avctx->err_recognition & AV_EF_EXPLODE) yading@10: return AVERROR_INVALIDDATA; yading@10: } yading@10: break; yading@10: yading@10: case PICTURE_START_CODE: yading@10: if (picture_start_code_seen && s2->picture_structure == PICT_FRAME) { yading@10: /* If it's a frame picture, there can't be more than one picture header. yading@10: Yet, it does happen and we need to handle it. */ yading@10: av_log(avctx, AV_LOG_WARNING, "ignoring extra picture following a frame-picture\n"); yading@10: break; yading@10: } yading@10: picture_start_code_seen = 1; yading@10: yading@10: if (s2->width <= 0 || s2->height <= 0) { yading@10: av_log(avctx, AV_LOG_ERROR, "Invalid frame dimensions %dx%d.\n", yading@10: s2->width, s2->height); yading@10: return AVERROR_INVALIDDATA; yading@10: } yading@10: yading@10: if(s->tmpgexs){ yading@10: s2->intra_dc_precision= 3; yading@10: s2->intra_matrix[0]= 1; yading@10: } yading@10: if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE) && s->slice_count) { yading@10: int i; yading@10: yading@10: avctx->execute(avctx, slice_decode_thread, yading@10: s2->thread_context, NULL, yading@10: s->slice_count, sizeof(void*)); yading@10: for (i = 0; i < s->slice_count; i++) yading@10: s2->er.error_count += s2->thread_context[i]->er.error_count; yading@10: s->slice_count = 0; yading@10: } yading@10: if (last_code == 0 || last_code == SLICE_MIN_START_CODE) { yading@10: ret = mpeg_decode_postinit(avctx); yading@10: if (ret < 0) { yading@10: av_log(avctx, AV_LOG_ERROR, "mpeg_decode_postinit() failure\n"); yading@10: return ret; yading@10: } yading@10: yading@10: /* we have a complete image: we try to decompress it */ yading@10: if (mpeg1_decode_picture(avctx, buf_ptr, input_size) < 0) yading@10: s2->pict_type = 0; yading@10: s2->first_slice = 1; yading@10: last_code = PICTURE_START_CODE; yading@10: } else { yading@10: av_log(avctx, AV_LOG_ERROR, "ignoring pic after %X\n", last_code); yading@10: if (avctx->err_recognition & AV_EF_EXPLODE) yading@10: return AVERROR_INVALIDDATA; yading@10: } yading@10: break; yading@10: case EXT_START_CODE: yading@10: init_get_bits(&s2->gb, buf_ptr, input_size*8); yading@10: yading@10: switch (get_bits(&s2->gb, 4)) { yading@10: case 0x1: yading@10: if (last_code == 0) { yading@10: mpeg_decode_sequence_extension(s); yading@10: } else { yading@10: av_log(avctx, AV_LOG_ERROR, "ignoring seq ext after %X\n", last_code); yading@10: if (avctx->err_recognition & AV_EF_EXPLODE) yading@10: return AVERROR_INVALIDDATA; yading@10: } yading@10: break; yading@10: case 0x2: yading@10: mpeg_decode_sequence_display_extension(s); yading@10: break; yading@10: case 0x3: yading@10: mpeg_decode_quant_matrix_extension(s2); yading@10: break; yading@10: case 0x7: yading@10: mpeg_decode_picture_display_extension(s); yading@10: break; yading@10: case 0x8: yading@10: if (last_code == PICTURE_START_CODE) { yading@10: mpeg_decode_picture_coding_extension(s); yading@10: } else { yading@10: av_log(avctx, AV_LOG_ERROR, "ignoring pic cod ext after %X\n", last_code); yading@10: if (avctx->err_recognition & AV_EF_EXPLODE) yading@10: return AVERROR_INVALIDDATA; yading@10: } yading@10: break; yading@10: } yading@10: break; yading@10: case USER_START_CODE: yading@10: mpeg_decode_user_data(avctx, buf_ptr, input_size); yading@10: break; yading@10: case GOP_START_CODE: yading@10: if (last_code == 0) { yading@10: s2->first_field=0; yading@10: mpeg_decode_gop(avctx, buf_ptr, input_size); yading@10: s->sync=1; yading@10: } else { yading@10: av_log(avctx, AV_LOG_ERROR, "ignoring GOP_START_CODE after %X\n", last_code); yading@10: if (avctx->err_recognition & AV_EF_EXPLODE) yading@10: return AVERROR_INVALIDDATA; yading@10: } yading@10: break; yading@10: default: yading@10: if (start_code >= SLICE_MIN_START_CODE && yading@10: start_code <= SLICE_MAX_START_CODE && last_code == PICTURE_START_CODE) { yading@10: yading@10: if (s2->progressive_sequence && !s2->progressive_frame) { yading@10: s2->progressive_frame = 1; yading@10: av_log(s2->avctx, AV_LOG_ERROR, "interlaced frame in progressive sequence, ignoring\n"); yading@10: } yading@10: yading@10: if (s2->picture_structure == 0 || (s2->progressive_frame && s2->picture_structure != PICT_FRAME)) { yading@10: av_log(s2->avctx, AV_LOG_ERROR, "picture_structure %d invalid, ignoring\n", s2->picture_structure); yading@10: s2->picture_structure = PICT_FRAME; yading@10: } yading@10: yading@10: if (s2->progressive_sequence && !s2->frame_pred_frame_dct) { yading@10: av_log(s2->avctx, AV_LOG_WARNING, "invalid frame_pred_frame_dct\n"); yading@10: } yading@10: yading@10: if (s2->picture_structure == PICT_FRAME) { yading@10: s2->first_field = 0; yading@10: s2->v_edge_pos = 16 * s2->mb_height; yading@10: } else { yading@10: s2->first_field ^= 1; yading@10: s2->v_edge_pos = 8 * s2->mb_height; yading@10: memset(s2->mbskip_table, 0, s2->mb_stride * s2->mb_height); yading@10: } yading@10: } yading@10: if (start_code >= SLICE_MIN_START_CODE && yading@10: start_code <= SLICE_MAX_START_CODE && last_code != 0) { yading@10: const int field_pic = s2->picture_structure != PICT_FRAME; yading@10: int mb_y = start_code - SLICE_MIN_START_CODE; yading@10: last_code = SLICE_MIN_START_CODE; yading@10: if(s2->codec_id != AV_CODEC_ID_MPEG1VIDEO && s2->mb_height > 2800/16) yading@10: mb_y += (*buf_ptr&0xE0)<<2; yading@10: yading@10: mb_y <<= field_pic; yading@10: if (s2->picture_structure == PICT_BOTTOM_FIELD) yading@10: mb_y++; yading@10: yading@10: if (mb_y >= s2->mb_height) { yading@10: av_log(s2->avctx, AV_LOG_ERROR, "slice below image (%d >= %d)\n", mb_y, s2->mb_height); yading@10: return -1; yading@10: } yading@10: yading@10: if (s2->last_picture_ptr == NULL) { yading@10: /* Skip B-frames if we do not have reference frames and gop is not closed */ yading@10: if (s2->pict_type == AV_PICTURE_TYPE_B) { yading@10: if (!s2->closed_gop) yading@10: break; yading@10: } yading@10: } yading@10: if (s2->pict_type == AV_PICTURE_TYPE_I || (s2->flags2 & CODEC_FLAG2_SHOW_ALL)) yading@10: s->sync=1; yading@10: if (s2->next_picture_ptr == NULL) { yading@10: /* Skip P-frames if we do not have a reference frame or we have an invalid header. */ yading@10: if (s2->pict_type == AV_PICTURE_TYPE_P && !s->sync) break; yading@10: } yading@10: if ((avctx->skip_frame >= AVDISCARD_NONREF && s2->pict_type == AV_PICTURE_TYPE_B) || yading@10: (avctx->skip_frame >= AVDISCARD_NONKEY && s2->pict_type != AV_PICTURE_TYPE_I) || yading@10: avctx->skip_frame >= AVDISCARD_ALL) yading@10: break; yading@10: yading@10: if (!s->mpeg_enc_ctx_allocated) yading@10: break; yading@10: yading@10: if (s2->codec_id == AV_CODEC_ID_MPEG2VIDEO) { yading@10: if (mb_y < avctx->skip_top || mb_y >= s2->mb_height - avctx->skip_bottom) yading@10: break; yading@10: } yading@10: yading@10: if (!s2->pict_type) { yading@10: av_log(avctx, AV_LOG_ERROR, "Missing picture start code\n"); yading@10: if (avctx->err_recognition & AV_EF_EXPLODE) yading@10: return AVERROR_INVALIDDATA; yading@10: break; yading@10: } yading@10: yading@10: if (s2->first_slice) { yading@10: s2->first_slice = 0; yading@10: if (mpeg_field_start(s2, buf, buf_size) < 0) yading@10: return -1; yading@10: } yading@10: if (!s2->current_picture_ptr) { yading@10: av_log(avctx, AV_LOG_ERROR, "current_picture not initialized\n"); yading@10: return AVERROR_INVALIDDATA; yading@10: } yading@10: yading@10: if (uses_vdpau(avctx)) { yading@10: s->slice_count++; yading@10: break; yading@10: } yading@10: yading@10: if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE)) { yading@10: int threshold = (s2->mb_height * s->slice_count + yading@10: s2->slice_context_count / 2) / yading@10: s2->slice_context_count; yading@10: av_assert0(avctx->thread_count > 1); yading@10: if (threshold <= mb_y) { yading@10: MpegEncContext *thread_context = s2->thread_context[s->slice_count]; yading@10: yading@10: thread_context->start_mb_y = mb_y; yading@10: thread_context->end_mb_y = s2->mb_height; yading@10: if (s->slice_count) { yading@10: s2->thread_context[s->slice_count-1]->end_mb_y = mb_y; yading@10: ret = ff_update_duplicate_context(thread_context, yading@10: s2); yading@10: if (ret < 0) yading@10: return ret; yading@10: } yading@10: init_get_bits(&thread_context->gb, buf_ptr, input_size*8); yading@10: s->slice_count++; yading@10: } yading@10: buf_ptr += 2; // FIXME add minimum number of bytes per slice yading@10: } else { yading@10: ret = mpeg_decode_slice(s2, mb_y, &buf_ptr, input_size); yading@10: emms_c(); yading@10: yading@10: if (ret < 0) { yading@10: if (avctx->err_recognition & AV_EF_EXPLODE) yading@10: return ret; yading@10: if (s2->resync_mb_x >= 0 && s2->resync_mb_y >= 0) yading@10: ff_er_add_slice(&s2->er, s2->resync_mb_x, s2->resync_mb_y, s2->mb_x, s2->mb_y, ER_AC_ERROR | ER_DC_ERROR | ER_MV_ERROR); yading@10: } else { yading@10: ff_er_add_slice(&s2->er, s2->resync_mb_x, s2->resync_mb_y, s2->mb_x-1, s2->mb_y, ER_AC_END | ER_DC_END | ER_MV_END); yading@10: } yading@10: } yading@10: } yading@10: break; yading@10: } yading@10: } yading@10: } yading@10: yading@10: static int mpeg_decode_frame(AVCodecContext *avctx, yading@10: void *data, int *got_output, yading@10: AVPacket *avpkt) yading@10: { yading@10: const uint8_t *buf = avpkt->data; yading@10: int ret; yading@10: int buf_size = avpkt->size; yading@10: Mpeg1Context *s = avctx->priv_data; yading@10: AVFrame *picture = data; yading@10: MpegEncContext *s2 = &s->mpeg_enc_ctx; yading@10: av_dlog(avctx, "fill_buffer\n"); yading@10: yading@10: if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == SEQ_END_CODE)) { yading@10: /* special case for last picture */ yading@10: if (s2->low_delay == 0 && s2->next_picture_ptr) { yading@10: int ret = av_frame_ref(picture, &s2->next_picture_ptr->f); yading@10: if (ret < 0) yading@10: return ret; yading@10: yading@10: s2->next_picture_ptr = NULL; yading@10: yading@10: *got_output = 1; yading@10: } yading@10: return buf_size; yading@10: } yading@10: yading@10: if (s2->flags & CODEC_FLAG_TRUNCATED) { yading@10: int next = ff_mpeg1_find_frame_end(&s2->parse_context, buf, buf_size, NULL); yading@10: yading@10: if (ff_combine_frame(&s2->parse_context, next, (const uint8_t **)&buf, &buf_size) < 0) yading@10: return buf_size; yading@10: } yading@10: yading@10: s2->codec_tag = avpriv_toupper4(avctx->codec_tag); yading@10: if (s->mpeg_enc_ctx_allocated == 0 && ( s2->codec_tag == AV_RL32("VCR2") yading@10: || s2->codec_tag == AV_RL32("BW10") yading@10: )) yading@10: vcr2_init_sequence(avctx); yading@10: yading@10: s->slice_count = 0; yading@10: yading@10: if (avctx->extradata && !s->extradata_decoded) { yading@10: ret = decode_chunks(avctx, picture, got_output, avctx->extradata, avctx->extradata_size); yading@10: if(*got_output) { yading@10: av_log(avctx, AV_LOG_ERROR, "picture in extradata\n"); yading@10: *got_output = 0; yading@10: } yading@10: s->extradata_decoded = 1; yading@10: if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE)) { yading@10: s2->current_picture_ptr = NULL; yading@10: return ret; yading@10: } yading@10: } yading@10: yading@10: ret = decode_chunks(avctx, picture, got_output, buf, buf_size); yading@10: if (ret<0 || *got_output) yading@10: s2->current_picture_ptr = NULL; yading@10: yading@10: return ret; yading@10: } yading@10: yading@10: yading@10: static void flush(AVCodecContext *avctx) yading@10: { yading@10: Mpeg1Context *s = avctx->priv_data; yading@10: yading@10: s->sync=0; yading@10: yading@10: ff_mpeg_flush(avctx); yading@10: } yading@10: yading@10: static int mpeg_decode_end(AVCodecContext *avctx) yading@10: { yading@10: Mpeg1Context *s = avctx->priv_data; yading@10: yading@10: if (s->mpeg_enc_ctx_allocated) yading@10: ff_MPV_common_end(&s->mpeg_enc_ctx); yading@10: return 0; yading@10: } yading@10: yading@10: static const AVProfile mpeg2_video_profiles[] = { yading@10: { FF_PROFILE_MPEG2_422, "4:2:2" }, yading@10: { FF_PROFILE_MPEG2_HIGH, "High" }, yading@10: { FF_PROFILE_MPEG2_SS, "Spatially Scalable" }, yading@10: { FF_PROFILE_MPEG2_SNR_SCALABLE, "SNR Scalable" }, yading@10: { FF_PROFILE_MPEG2_MAIN, "Main" }, yading@10: { FF_PROFILE_MPEG2_SIMPLE, "Simple" }, yading@10: { FF_PROFILE_RESERVED, "Reserved" }, yading@10: { FF_PROFILE_RESERVED, "Reserved" }, yading@10: { FF_PROFILE_UNKNOWN }, yading@10: }; yading@10: yading@10: yading@10: AVCodec ff_mpeg1video_decoder = { yading@10: .name = "mpeg1video", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_MPEG1VIDEO, yading@10: .priv_data_size = sizeof(Mpeg1Context), yading@10: .init = mpeg_decode_init, yading@10: .close = mpeg_decode_end, yading@10: .decode = mpeg_decode_frame, yading@10: .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | yading@10: CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | yading@10: CODEC_CAP_SLICE_THREADS, yading@10: .flush = flush, yading@10: .max_lowres = 3, yading@10: .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video"), yading@10: .update_thread_context = ONLY_IF_THREADS_ENABLED(mpeg_decode_update_thread_context) yading@10: }; yading@10: yading@10: AVCodec ff_mpeg2video_decoder = { yading@10: .name = "mpeg2video", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_MPEG2VIDEO, yading@10: .priv_data_size = sizeof(Mpeg1Context), yading@10: .init = mpeg_decode_init, yading@10: .close = mpeg_decode_end, yading@10: .decode = mpeg_decode_frame, yading@10: .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | yading@10: CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | yading@10: CODEC_CAP_SLICE_THREADS, yading@10: .flush = flush, yading@10: .max_lowres = 3, yading@10: .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 video"), yading@10: .profiles = NULL_IF_CONFIG_SMALL(mpeg2_video_profiles), yading@10: }; yading@10: yading@10: //legacy decoder yading@10: AVCodec ff_mpegvideo_decoder = { yading@10: .name = "mpegvideo", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_MPEG2VIDEO, yading@10: .priv_data_size = sizeof(Mpeg1Context), yading@10: .init = mpeg_decode_init, yading@10: .close = mpeg_decode_end, yading@10: .decode = mpeg_decode_frame, yading@10: .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS, yading@10: .flush = flush, yading@10: .max_lowres = 3, yading@10: .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video"), yading@10: }; yading@10: yading@10: #if CONFIG_MPEG_XVMC_DECODER yading@10: static av_cold int mpeg_mc_decode_init(AVCodecContext *avctx) yading@10: { yading@10: if (avctx->active_thread_type & FF_THREAD_SLICE) yading@10: return -1; yading@10: if (!(avctx->slice_flags & SLICE_FLAG_CODED_ORDER)) yading@10: return -1; yading@10: if (!(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD)) { yading@10: av_dlog(avctx, "mpeg12.c: XvMC decoder will work better if SLICE_FLAG_ALLOW_FIELD is set\n"); yading@10: } yading@10: mpeg_decode_init(avctx); yading@10: yading@10: avctx->pix_fmt = AV_PIX_FMT_XVMC_MPEG2_IDCT; yading@10: avctx->xvmc_acceleration = 2; // 2 - the blocks are packed! yading@10: yading@10: return 0; yading@10: } yading@10: yading@10: AVCodec ff_mpeg_xvmc_decoder = { yading@10: .name = "mpegvideo_xvmc", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_MPEG2VIDEO_XVMC, yading@10: .priv_data_size = sizeof(Mpeg1Context), yading@10: .init = mpeg_mc_decode_init, yading@10: .close = mpeg_decode_end, yading@10: .decode = mpeg_decode_frame, yading@10: .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | yading@10: CODEC_CAP_TRUNCATED| CODEC_CAP_HWACCEL | CODEC_CAP_DELAY, yading@10: .flush = flush, yading@10: .long_name = NULL_IF_CONFIG_SMALL("MPEG-1/2 video XvMC (X-Video Motion Compensation)"), yading@10: }; yading@10: yading@10: #endif yading@10: yading@10: #if CONFIG_MPEG_VDPAU_DECODER yading@10: AVCodec ff_mpeg_vdpau_decoder = { yading@10: .name = "mpegvideo_vdpau", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_MPEG2VIDEO, yading@10: .priv_data_size = sizeof(Mpeg1Context), yading@10: .init = mpeg_decode_init, yading@10: .close = mpeg_decode_end, yading@10: .decode = mpeg_decode_frame, yading@10: .capabilities = CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | yading@10: CODEC_CAP_HWACCEL_VDPAU | CODEC_CAP_DELAY, yading@10: .flush = flush, yading@10: .long_name = NULL_IF_CONFIG_SMALL("MPEG-1/2 video (VDPAU acceleration)"), yading@10: }; yading@10: #endif yading@10: yading@10: #if CONFIG_MPEG1_VDPAU_DECODER yading@10: AVCodec ff_mpeg1_vdpau_decoder = { yading@10: .name = "mpeg1video_vdpau", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_MPEG1VIDEO, yading@10: .priv_data_size = sizeof(Mpeg1Context), yading@10: .init = mpeg_decode_init, yading@10: .close = mpeg_decode_end, yading@10: .decode = mpeg_decode_frame, yading@10: .capabilities = CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | yading@10: CODEC_CAP_HWACCEL_VDPAU | CODEC_CAP_DELAY, yading@10: .flush = flush, yading@10: .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video (VDPAU acceleration)"), yading@10: }; yading@10: #endif