diff options
Diffstat (limited to 'libavcodec/mjpegdec.c')
| -rw-r--r-- | libavcodec/mjpegdec.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index 9bfe706001..1deaaf3afd 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -35,6 +35,7 @@ #include "libavutil/imgutils.h" #include "libavutil/avassert.h" +#include "libavutil/opt.h" #include "avcodec.h" #include "dsputil.h" #include "mjpeg.h" @@ -98,13 +99,17 @@ av_cold int ff_mjpeg_decode_init(AVCodecContext *avctx) build_basic_mjpeg_vlc(s); +#if FF_API_MJPEG_GLOBAL_OPTS if (avctx->flags & CODEC_FLAG_EXTERN_HUFF) + s->extern_huff = 1; +#endif + if (s->extern_huff) { av_log(avctx, AV_LOG_INFO, "mjpeg: using external huffman table\n"); init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size*8); if (ff_mjpeg_decode_dht(s)) { - av_log(avctx, AV_LOG_ERROR, "mjpeg: error using external huffman table, switching back to internal\n"); - build_basic_mjpeg_vlc(s); + av_log(avctx, AV_LOG_ERROR, "mjpeg: error using external huffman table\n"); + return AVERROR_INVALIDDATA; } } if (avctx->extradata_size > 9 && @@ -1578,6 +1583,20 @@ av_cold int ff_mjpeg_decode_end(AVCodecContext *avctx) return 0; } +#define OFFSET(x) offsetof(MJpegDecodeContext, x) +#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM +static const AVOption options[] = { + { "extern_huff", "Use external huffman table.", OFFSET(extern_huff), FF_OPT_TYPE_INT, { 0 }, 0, 1, VD }, + { NULL }, +}; + +static const AVClass mjpegdec_class = { + .class_name = "MJPEG decoder", + .item_name = av_default_item_name, + .option = options, + .version = LIBAVUTIL_VERSION_INT, +}; + AVCodec ff_mjpeg_decoder = { .name = "mjpeg", .type = AVMEDIA_TYPE_VIDEO, @@ -1589,6 +1608,7 @@ AVCodec ff_mjpeg_decoder = { .capabilities = CODEC_CAP_DR1, .max_lowres = 3, .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"), + .priv_class = &mjpegdec_class, }; AVCodec ff_thp_decoder = { |