yading@10: /* yading@10: * V210 decoder yading@10: * yading@10: * Copyright (C) 2009 Michael Niedermayer yading@10: * Copyright (c) 2009 Baptiste Coudurier 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 "avcodec.h" yading@10: #include "internal.h" yading@10: #include "v210dec.h" yading@10: #include "libavutil/bswap.h" yading@10: #include "libavutil/internal.h" yading@10: #include "libavutil/mem.h" yading@10: yading@10: #define READ_PIXELS(a, b, c) \ yading@10: do { \ yading@10: val = av_le2ne32(*src++); \ yading@10: *a++ = val & 0x3FF; \ yading@10: *b++ = (val >> 10) & 0x3FF; \ yading@10: *c++ = (val >> 20) & 0x3FF; \ yading@10: } while (0) yading@10: yading@10: static void v210_planar_unpack_c(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width) yading@10: { yading@10: uint32_t val; yading@10: int i; yading@10: yading@10: for( i = 0; i < width-5; i += 6 ){ yading@10: READ_PIXELS(u, y, v); yading@10: READ_PIXELS(y, u, y); yading@10: READ_PIXELS(v, y, u); yading@10: READ_PIXELS(y, v, y); yading@10: } yading@10: } yading@10: yading@10: static av_cold int decode_init(AVCodecContext *avctx) yading@10: { yading@10: V210DecContext *s = avctx->priv_data; yading@10: yading@10: if (avctx->width & 1) { yading@10: av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n"); yading@10: return AVERROR_INVALIDDATA; yading@10: } yading@10: avctx->pix_fmt = AV_PIX_FMT_YUV422P10; yading@10: avctx->bits_per_raw_sample = 10; yading@10: yading@10: s->unpack_frame = v210_planar_unpack_c; yading@10: yading@10: if (HAVE_MMX) yading@10: v210_x86_init(s); yading@10: yading@10: return 0; yading@10: } yading@10: yading@10: static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, yading@10: AVPacket *avpkt) yading@10: { yading@10: V210DecContext *s = avctx->priv_data; yading@10: yading@10: int h, w, ret, stride, aligned_input; yading@10: AVFrame *pic = data; yading@10: const uint8_t *psrc = avpkt->data; yading@10: uint16_t *y, *u, *v; yading@10: yading@10: if (s->custom_stride ) yading@10: stride = s->custom_stride; yading@10: else { yading@10: int aligned_width = ((avctx->width + 47) / 48) * 48; yading@10: stride = aligned_width * 8 / 3; yading@10: } yading@10: yading@10: if (avpkt->size < stride * avctx->height) { yading@10: if ((((avctx->width + 23) / 24) * 24 * 8) / 3 * avctx->height == avpkt->size) { yading@10: stride = avpkt->size / avctx->height; yading@10: if (!s->stride_warning_shown) yading@10: av_log(avctx, AV_LOG_WARNING, "Broken v210 with too small padding (64 byte) detected\n"); yading@10: s->stride_warning_shown = 1; yading@10: } else { yading@10: av_log(avctx, AV_LOG_ERROR, "packet too small\n"); yading@10: return AVERROR_INVALIDDATA; yading@10: } yading@10: } yading@10: yading@10: aligned_input = !((uintptr_t)psrc & 0xf) && !(stride & 0xf); yading@10: if (aligned_input != s->aligned_input) { yading@10: s->aligned_input = aligned_input; yading@10: if (HAVE_MMX) yading@10: v210_x86_init(s); yading@10: } yading@10: yading@10: if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) yading@10: return ret; yading@10: yading@10: y = (uint16_t*)pic->data[0]; yading@10: u = (uint16_t*)pic->data[1]; yading@10: v = (uint16_t*)pic->data[2]; yading@10: pic->pict_type = AV_PICTURE_TYPE_I; yading@10: pic->key_frame = 1; yading@10: yading@10: for (h = 0; h < avctx->height; h++) { yading@10: const uint32_t *src = (const uint32_t*)psrc; yading@10: uint32_t val; yading@10: yading@10: w = (avctx->width / 6) * 6; yading@10: s->unpack_frame(src, y, u, v, w); yading@10: yading@10: y += w; yading@10: u += w >> 1; yading@10: v += w >> 1; yading@10: src += (w << 1) / 3; yading@10: yading@10: if (w < avctx->width - 1) { yading@10: READ_PIXELS(u, y, v); yading@10: yading@10: val = av_le2ne32(*src++); yading@10: *y++ = val & 0x3FF; yading@10: if (w < avctx->width - 3) { yading@10: *u++ = (val >> 10) & 0x3FF; yading@10: *y++ = (val >> 20) & 0x3FF; yading@10: yading@10: val = av_le2ne32(*src++); yading@10: *v++ = val & 0x3FF; yading@10: *y++ = (val >> 10) & 0x3FF; yading@10: } yading@10: } yading@10: yading@10: psrc += stride; yading@10: y += pic->linesize[0] / 2 - avctx->width; yading@10: u += pic->linesize[1] / 2 - avctx->width / 2; yading@10: v += pic->linesize[2] / 2 - avctx->width / 2; yading@10: } yading@10: yading@10: *got_frame = 1; yading@10: yading@10: return avpkt->size; yading@10: } yading@10: yading@10: #define V210DEC_FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM yading@10: static const AVOption v210dec_options[] = { yading@10: {"custom_stride", "Custom V210 stride", offsetof(V210DecContext, custom_stride), FF_OPT_TYPE_INT, yading@10: {.i64 = 0}, INT_MIN, INT_MAX, V210DEC_FLAGS}, yading@10: {NULL} yading@10: }; yading@10: yading@10: static const AVClass v210dec_class = { yading@10: "V210 Decoder", yading@10: av_default_item_name, yading@10: v210dec_options, yading@10: LIBAVUTIL_VERSION_INT, yading@10: }; yading@10: yading@10: AVCodec ff_v210_decoder = { yading@10: .name = "v210", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_V210, yading@10: .priv_data_size = sizeof(V210DecContext), yading@10: .init = decode_init, yading@10: .decode = decode_frame, yading@10: .capabilities = CODEC_CAP_DR1, yading@10: .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"), yading@10: .priv_class = &v210dec_class, yading@10: };