static av_cold int raw_init_decoder(AVCodecContext *avctx)
{
RawVideoContext *context = avctx->priv_data;
if (avctx->codec_tag == MKTAG('r','a','w',' '))
avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_mov, avctx->bits_per_coded_sample);
else if (avctx->codec_tag)
avctx->pix_fmt = find_pix_fmt(ff_raw_pix_fmt_tags, avctx->codec_tag);
else if (avctx->pix_fmt == PIX_FMT_NONE && avctx->bits_per_coded_sample)
avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_avi, avctx->bits_per_coded_sample);
ff_set_systematic_pal2(context->palette, avctx->pix_fmt);
context->length = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);
if((avctx->bits_per_coded_sample == 4 || avctx->bits_per_coded_sample == 2) &&
avctx->pix_fmt==PIX_FMT_PAL8 &&
(!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' '))){
context->buffer = av_malloc(context->length);
if (!context->buffer)
return -1;
}
context->pic.pict_type = FF_I_TYPE;
context->pic.key_frame = 1;
avctx->coded_frame= &context->pic;
if((avctx->extradata_size >= 9 && !memcmp(avctx->extradata + avctx->extradata_size - 9, "BottomUp", 9)) ||
avctx->codec_tag == MKTAG( 3 , 0 , 0 , 0 ))
context->flip=1;
return 0;
}
static av_cold int raw_init_decoder(AVCodecContext *avctx)
{
RawVideoContext *context = avctx->priv_data;
const AVPixFmtDescriptor *desc;
if (avctx->codec_tag == MKTAG('r', 'a', 'w', ' '))
avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_mov,
avctx->bits_per_coded_sample);
else if (avctx->codec_tag == MKTAG('W', 'R', 'A', 'W'))
avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_avi,
avctx->bits_per_coded_sample);
else if (avctx->codec_tag)
avctx->pix_fmt = find_pix_fmt(ff_raw_pix_fmt_tags, avctx->codec_tag);
else if (avctx->pix_fmt == AV_PIX_FMT_NONE && avctx->bits_per_coded_sample)
avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_avi,
avctx->bits_per_coded_sample);
desc = av_pix_fmt_desc_get(avctx->pix_fmt);
if (!desc) {
av_log(avctx, AV_LOG_ERROR, "Invalid pixel format.\n");
return AVERROR(EINVAL);
}
if (desc->flags & (PIX_FMT_PAL || PIX_FMT_PSEUDOPAL)) {
context->palette = av_buffer_alloc(AVPALETTE_SIZE);
if (!context->palette)
return AVERROR(ENOMEM);
if (desc->flags & PIX_FMT_PSEUDOPAL)
avpriv_set_systematic_pal2((uint32_t*)context->palette->data, avctx->pix_fmt);
else
memset(context->palette->data, 0, AVPALETTE_SIZE);
}
context->frame_size = avpicture_get_size(avctx->pix_fmt, avctx->width,
avctx->height);
if ((avctx->bits_per_coded_sample == 4 || avctx->bits_per_coded_sample == 2) &&
avctx->pix_fmt == AV_PIX_FMT_PAL8 &&
(!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' ')))
context->is_2_4_bpp = 1;
if ((avctx->extradata_size >= 9 &&
!memcmp(avctx->extradata + avctx->extradata_size - 9, "BottomUp", 9)) ||
avctx->codec_tag == MKTAG(3, 0, 0, 0) ||
avctx->codec_tag == MKTAG('W','R','A','W'))
context->flip = 1;
if (avctx->codec_tag == AV_RL32("yuv2") &&
avctx->pix_fmt == AV_PIX_FMT_YUYV422)
context->is_yuv2 = 1;
return 0;
}