yading@10: /* yading@10: * MPEG-4 / H.263 HW decode acceleration through VA API yading@10: * yading@10: * Copyright (C) 2008-2009 Splitted-Desktop Systems 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: #include "vaapi_internal.h" yading@10: #include "h263.h" yading@10: yading@10: /** Reconstruct bitstream intra_dc_vlc_thr */ yading@10: static int mpeg4_get_intra_dc_vlc_thr(MpegEncContext *s) yading@10: { yading@10: switch (s->intra_dc_threshold) { yading@10: case 99: return 0; yading@10: case 13: return 1; yading@10: case 15: return 2; yading@10: case 17: return 3; yading@10: case 19: return 4; yading@10: case 21: return 5; yading@10: case 23: return 6; yading@10: case 0: return 7; yading@10: } yading@10: return 0; yading@10: } yading@10: yading@10: static int vaapi_mpeg4_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size) yading@10: { yading@10: MpegEncContext * const s = avctx->priv_data; yading@10: struct vaapi_context * const vactx = avctx->hwaccel_context; yading@10: VAPictureParameterBufferMPEG4 *pic_param; yading@10: VAIQMatrixBufferMPEG4 *iq_matrix; yading@10: int i; yading@10: yading@10: av_dlog(avctx, "vaapi_mpeg4_start_frame()\n"); yading@10: yading@10: vactx->slice_param_size = sizeof(VASliceParameterBufferMPEG4); yading@10: yading@10: /* Fill in VAPictureParameterBufferMPEG4 */ yading@10: pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferMPEG4)); yading@10: if (!pic_param) yading@10: return -1; yading@10: pic_param->vop_width = s->width; yading@10: pic_param->vop_height = s->height; yading@10: pic_param->forward_reference_picture = VA_INVALID_ID; yading@10: pic_param->backward_reference_picture = VA_INVALID_ID; yading@10: pic_param->vol_fields.value = 0; /* reset all bits */ yading@10: pic_param->vol_fields.bits.short_video_header = avctx->codec->id == AV_CODEC_ID_H263; yading@10: pic_param->vol_fields.bits.chroma_format = CHROMA_420; yading@10: pic_param->vol_fields.bits.interlaced = !s->progressive_sequence; yading@10: pic_param->vol_fields.bits.obmc_disable = 1; yading@10: pic_param->vol_fields.bits.sprite_enable = s->vol_sprite_usage; yading@10: pic_param->vol_fields.bits.sprite_warping_accuracy = s->sprite_warping_accuracy; yading@10: pic_param->vol_fields.bits.quant_type = s->mpeg_quant; yading@10: pic_param->vol_fields.bits.quarter_sample = s->quarter_sample; yading@10: pic_param->vol_fields.bits.data_partitioned = s->data_partitioning; yading@10: pic_param->vol_fields.bits.reversible_vlc = s->rvlc; yading@10: pic_param->vol_fields.bits.resync_marker_disable = !s->resync_marker; yading@10: pic_param->no_of_sprite_warping_points = s->num_sprite_warping_points; yading@10: for (i = 0; i < s->num_sprite_warping_points && i < 3; i++) { yading@10: pic_param->sprite_trajectory_du[i] = s->sprite_traj[i][0]; yading@10: pic_param->sprite_trajectory_dv[i] = s->sprite_traj[i][1]; yading@10: } yading@10: pic_param->quant_precision = s->quant_precision; yading@10: pic_param->vop_fields.value = 0; /* reset all bits */ yading@10: pic_param->vop_fields.bits.vop_coding_type = s->pict_type - AV_PICTURE_TYPE_I; yading@10: pic_param->vop_fields.bits.backward_reference_vop_coding_type = s->pict_type == AV_PICTURE_TYPE_B ? s->next_picture.f.pict_type - AV_PICTURE_TYPE_I : 0; yading@10: pic_param->vop_fields.bits.vop_rounding_type = s->no_rounding; yading@10: pic_param->vop_fields.bits.intra_dc_vlc_thr = mpeg4_get_intra_dc_vlc_thr(s); yading@10: pic_param->vop_fields.bits.top_field_first = s->top_field_first; yading@10: pic_param->vop_fields.bits.alternate_vertical_scan_flag = s->alternate_scan; yading@10: pic_param->vop_fcode_forward = s->f_code; yading@10: pic_param->vop_fcode_backward = s->b_code; yading@10: pic_param->vop_time_increment_resolution = avctx->time_base.den; yading@10: pic_param->num_macroblocks_in_gob = s->mb_width * ff_h263_get_gob_height(s); yading@10: pic_param->num_gobs_in_vop = (s->mb_width * s->mb_height) / pic_param->num_macroblocks_in_gob; yading@10: pic_param->TRB = s->pb_time; yading@10: pic_param->TRD = s->pp_time; yading@10: yading@10: if (s->pict_type == AV_PICTURE_TYPE_B) yading@10: pic_param->backward_reference_picture = ff_vaapi_get_surface_id(&s->next_picture); yading@10: if (s->pict_type != AV_PICTURE_TYPE_I) yading@10: pic_param->forward_reference_picture = ff_vaapi_get_surface_id(&s->last_picture); yading@10: yading@10: /* Fill in VAIQMatrixBufferMPEG4 */ yading@10: /* Only the first inverse quantisation method uses the weighting matrices */ yading@10: if (pic_param->vol_fields.bits.quant_type) { yading@10: iq_matrix = ff_vaapi_alloc_iq_matrix(vactx, sizeof(VAIQMatrixBufferMPEG4)); yading@10: if (!iq_matrix) yading@10: return -1; yading@10: iq_matrix->load_intra_quant_mat = 1; yading@10: iq_matrix->load_non_intra_quant_mat = 1; yading@10: yading@10: for (i = 0; i < 64; i++) { yading@10: int n = s->dsp.idct_permutation[ff_zigzag_direct[i]]; yading@10: iq_matrix->intra_quant_mat[i] = s->intra_matrix[n]; yading@10: iq_matrix->non_intra_quant_mat[i] = s->inter_matrix[n]; yading@10: } yading@10: } yading@10: return 0; yading@10: } yading@10: yading@10: static int vaapi_mpeg4_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) yading@10: { yading@10: MpegEncContext * const s = avctx->priv_data; yading@10: VASliceParameterBufferMPEG4 *slice_param; yading@10: yading@10: av_dlog(avctx, "vaapi_mpeg4_decode_slice(): buffer %p, size %d\n", buffer, size); yading@10: yading@10: /* video_plane_with_short_video_header() contains all GOBs yading@10: * in-order, and this is what VA API (Intel backend) expects: only yading@10: * a single slice param. So fake macroblock_number for FFmpeg so yading@10: * that we don't call vaapi_mpeg4_decode_slice() again yading@10: */ yading@10: if (avctx->codec->id == AV_CODEC_ID_H263) yading@10: size = s->gb.buffer_end - buffer; yading@10: yading@10: /* Fill in VASliceParameterBufferMPEG4 */ yading@10: slice_param = (VASliceParameterBufferMPEG4 *)ff_vaapi_alloc_slice(avctx->hwaccel_context, buffer, size); yading@10: if (!slice_param) yading@10: return -1; yading@10: slice_param->macroblock_offset = get_bits_count(&s->gb) % 8; yading@10: slice_param->macroblock_number = s->mb_y * s->mb_width + s->mb_x; yading@10: slice_param->quant_scale = s->qscale; yading@10: yading@10: if (avctx->codec->id == AV_CODEC_ID_H263) yading@10: s->mb_y = s->mb_height; yading@10: yading@10: return 0; yading@10: } yading@10: yading@10: #if CONFIG_MPEG4_VAAPI_HWACCEL yading@10: AVHWAccel ff_mpeg4_vaapi_hwaccel = { yading@10: .name = "mpeg4_vaapi", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_MPEG4, yading@10: .pix_fmt = AV_PIX_FMT_VAAPI_VLD, yading@10: .start_frame = vaapi_mpeg4_start_frame, yading@10: .end_frame = ff_vaapi_mpeg_end_frame, yading@10: .decode_slice = vaapi_mpeg4_decode_slice, yading@10: }; yading@10: #endif yading@10: yading@10: #if CONFIG_H263_VAAPI_HWACCEL yading@10: AVHWAccel ff_h263_vaapi_hwaccel = { yading@10: .name = "h263_vaapi", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_H263, yading@10: .pix_fmt = AV_PIX_FMT_VAAPI_VLD, yading@10: .start_frame = vaapi_mpeg4_start_frame, yading@10: .end_frame = ff_vaapi_mpeg_end_frame, yading@10: .decode_slice = vaapi_mpeg4_decode_slice, yading@10: }; yading@10: #endif