On Fri, 24 Nov 2017 00:51:30 +0000
Mark Thompson <s...@jkqxz.net> wrote:
> This is needed by later hwaccel code to tell which encoding process
> was used for a particular frame, because hardware decoders may only
> support a subset of possible methods.
> ---
> libavcodec/avcodec.h | 6 ++++++
> libavcodec/mjpegdec.c | 7 +++++++
> 2 files changed, 13 insertions(+)
>
> diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
> index 0972df0bde..c1e68b1d13 100644
> --- a/libavcodec/avcodec.h
> +++ b/libavcodec/avcodec.h
> @@ -2897,6 +2897,12 @@ typedef struct AVCodecContext {
> #define FF_PROFILE_HEVC_MAIN_STILL_PICTURE 3
> #define FF_PROFILE_HEVC_REXT 4
>
> +#define FF_PROFILE_MJPEG_HUFFMAN_BASELINE_DCT 0xc0
> +#define FF_PROFILE_MJPEG_HUFFMAN_EXTENDED_SEQUENTIAL_DCT 0xc1
> +#define FF_PROFILE_MJPEG_HUFFMAN_PROGRESSIVE_DCT 0xc2
> +#define FF_PROFILE_MJPEG_HUFFMAN_LOSSLESS 0xc3
> +#define FF_PROFILE_MJPEG_JPEG_LS 0xf7
> +
> /**
> * level
> * - encoding: Set by user.
> diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
> index e005dd0cd3..f01d44a169 100644
> --- a/libavcodec/mjpegdec.c
> +++ b/libavcodec/mjpegdec.c
> @@ -2288,6 +2288,10 @@ int ff_mjpeg_decode_frame(AVCodecContext
> *avctx, void *data, int *got_frame, break;
> case SOF0:
> case SOF1:
> + if (start_code == SOF0)
> + s->avctx->profile =
> FF_PROFILE_MJPEG_HUFFMAN_BASELINE_DCT;
> + else
> + s->avctx->profile =
> FF_PROFILE_MJPEG_HUFFMAN_EXTENDED_SEQUENTIAL_DCT; s->lossless = 0;
> s->ls = 0;
> s->progressive = 0;
> @@ -2295,6 +2299,7 @@ int ff_mjpeg_decode_frame(AVCodecContext
> *avctx, void *data, int *got_frame, goto fail;
> break;
> case SOF2:
> + s->avctx->profile =
> FF_PROFILE_MJPEG_HUFFMAN_PROGRESSIVE_DCT; s->lossless = 0;
> s->ls = 0;
> s->progressive = 1;
> @@ -2302,6 +2307,7 @@ int ff_mjpeg_decode_frame(AVCodecContext
> *avctx, void *data, int *got_frame, goto fail;
> break;
> case SOF3:
> + s->avctx->profile =
> FF_PROFILE_MJPEG_HUFFMAN_LOSSLESS; s->avctx->properties |=
> FF_CODEC_PROPERTY_LOSSLESS; s->lossless = 1;
> s->ls = 0;
> @@ -2310,6 +2316,7 @@ int ff_mjpeg_decode_frame(AVCodecContext
> *avctx, void *data, int *got_frame, goto fail;
> break;
> case SOF48:
> + s->avctx->profile = FF_PROFILE_MJPEG_JPEG_LS;
> s->avctx->properties |= FF_CODEC_PROPERTY_LOSSLESS;
> s->lossless = 1;
> s->ls = 1;
LGTM
--phil
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
