[FFmpeg-devel] [PATCH 1/3] avcodec/agm: add support for higher compression
Michael Niedermayer
michael at niedermayer.cc
Sun Apr 21 11:37:58 EEST 2019
On Sun, Apr 21, 2019 at 08:50:04AM +0200, Paul B Mahol wrote:
> On 4/21/19, Michael Niedermayer <michael at niedermayer.cc> wrote:
> > On Wed, Apr 10, 2019 at 01:45:51PM +0200, Paul B Mahol wrote:
> >> Signed-off-by: Paul B Mahol <onemda at gmail.com>
> >> ---
> >> libavcodec/agm.c | 404 +++++++++++++++++++++++++++++++++++++++++++--
> >> libavformat/riff.c | 4 +
> >> 2 files changed, 392 insertions(+), 16 deletions(-)
> > [...]
> >> @@ -509,6 +861,7 @@ static int decode_frame(AVCodecContext *avctx, void
> >> *data,
> >> GetByteContext *gbyte = &s->gbyte;
> >> AVFrame *frame = data;
> >> int w, h, width, height, header;
> >> + unsigned compressed_size;
> >> int ret;
> >>
> >> if (!avpkt->size)
> >> @@ -524,13 +877,19 @@ static int decode_frame(AVCodecContext *avctx, void
> >> *data,
> >> if (avpkt->size < s->bitstream_size + 8)
> >> return AVERROR_INVALIDDATA;
> >>
> >> - s->key_frame = s->fflags & 0x1;
> >> + s->key_frame = avpkt->flags & AV_PKT_FLAG_KEY;
> >> frame->key_frame = s->key_frame;
> >> frame->pict_type = s->key_frame ? AV_PICTURE_TYPE_I :
> >> AV_PICTURE_TYPE_P;
> >>
> >> if (header) {
> >> - av_log(avctx, AV_LOG_ERROR, "header: %X\n", header);
> >> - return AVERROR_PATCHWELCOME;
> >> + if (avctx->codec_tag == MKTAG('A', 'G', 'M', '0') ||
> >> + avctx->codec_tag == MKTAG('A', 'G', 'M', '1'))
> >> + return AVERROR_PATCHWELCOME;
> >> + else
> >
> >> + ret = decode_huffman2(avctx, header, (avpkt->size -
> >> s->bitstream_size) - 8);
> >
> > where can i find samples for this ?
> > i need to fix some bugs in this as it produces crashes but i have
> > no samples to test to ensure a fix doesnt break anything
>
> Just post patches, I will take care of rest.
will do, but it still would be usefull to have samples to test
i only have sg6-.agm / sg6o.agm which dont trigger this path
thx
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
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forever, its just that you wont like living in it. -- Hiranya Peiri
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