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lavf/avienc: Add support for palette side data

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Mats Peterson 2016-03-05 12:16:57 +01:00 committed by Michael Niedermayer
parent 698fdc8547
commit 2df0bbaca5
1 changed files with 61 additions and 28 deletions
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89
libavformat/avienc.c
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@ -49,6 +49,8 @@ typedef struct AVIIentry {
#define AVI_INDEX_CLUSTER_SIZE 16384
#define AVISF_VIDEO_PALCHANGES 0x00010000
typedef struct AVIIndex {
int64_t indx_start;
int64_t audio_strm_offset;
@ -74,12 +76,15 @@ typedef struct AVIStream {
int max_size;
int sample_requested;
int64_t pal_offset;
int hdr_pal_done;
int64_t last_dts;
AVIIndex indexes;
int64_t strh_flags_offset;
uint32_t palette[AVPALETTE_COUNT];
uint32_t old_palette[AVPALETTE_COUNT];
int64_t pal_offset;
} AVIStream;
static int avi_write_packet_internal(AVFormatContext *s, AVPacket *pkt);
@ -301,6 +306,8 @@ static int avi_write_header(AVFormatContext *s)
avio_wl32(pb, enc->codec_tag);
else
avio_wl32(pb, 1);
if (enc->codec_type == AVMEDIA_TYPE_VIDEO && pb->seekable)
avist->strh_flags_offset = avio_tell(pb);
avio_wl32(pb, 0); /* flags */
avio_wl16(pb, 0); /* priority */
avio_wl16(pb, 0); /* language */
@ -362,7 +369,8 @@ static int avi_write_header(AVFormatContext *s)
&& enc->pix_fmt == AV_PIX_FMT_RGB555LE
&& enc->bits_per_coded_sample == 15)
enc->bits_per_coded_sample = 16;
avist->pal_offset = avio_tell(pb) + 40;
if (pb->seekable)
avist->pal_offset = avio_tell(pb) + 40;
ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 0, 0);
pix_fmt = avpriv_find_pix_fmt(avpriv_pix_fmt_bps_avi,
enc->bits_per_coded_sample);
@ -652,11 +660,11 @@ static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
{
unsigned char tag[5];
const int stream_index = pkt->stream_index;
const uint8_t *data = pkt->data;
int size = pkt->size;
AVIOContext *pb = s->pb;
AVCodecContext *enc = s->streams[stream_index]->codec;
AVIStream *avist = s->streams[stream_index]->priv_data;
AVPacket *opkt = pkt;
enum AVPixelFormat pix_fmt = enc->pix_fmt;
int ret;
if (enc->codec_id == AV_CODEC_ID_H264 && enc->codec_tag == MKTAG('H','2','6','4') && pkt->size) {
@ -668,39 +676,64 @@ static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
if ((ret = write_skip_frames(s, stream_index, pkt->dts)) < 0)
return ret;
if (enc->codec_id == AV_CODEC_ID_RAWVIDEO && enc->codec_tag == 0) {
int64_t bpc = enc->bits_per_coded_sample != 15 ? enc->bits_per_coded_sample : 16;
int expected_stride = ((enc->width * bpc + 31) >> 5)*4;
if (!pkt->size)
return avi_write_packet_internal(s, pkt); /* Passthrough */
ret = ff_reshuffle_raw_rgb(s, &pkt, enc, expected_stride);
if (ret < 0)
return ret;
if (ret) {
if (ret == CONTAINS_PAL) {
int pc_tag, i;
if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
if (enc->codec_id == AV_CODEC_ID_RAWVIDEO && enc->codec_tag == 0) {
int64_t bpc = enc->bits_per_coded_sample != 15 ? enc->bits_per_coded_sample : 16;
int expected_stride = ((enc->width * bpc + 31) >> 5)*4;
ret = ff_reshuffle_raw_rgb(s, &pkt, enc, expected_stride);
if (ret < 0)
return ret;
} else
ret = 0;
if (pix_fmt == AV_PIX_FMT_NONE && enc->bits_per_coded_sample == 1)
pix_fmt = AV_PIX_FMT_MONOWHITE;
if (pix_fmt == AV_PIX_FMT_PAL8 ||
pix_fmt == AV_PIX_FMT_MONOWHITE ||
pix_fmt == AV_PIX_FMT_MONOBLACK) {
int ret2 = ff_get_packet_palette(s, opkt, ret, avist->palette);
if (ret2 < 0)
return ret2;
if (ret2) {
int pal_size = 1 << enc->bits_per_coded_sample;
if (!avist->hdr_pal_done) {
int pc_tag, i;
if (pb->seekable && avist->pal_offset) {
int64_t cur_offset = avio_tell(pb);
avio_seek(pb, avist->pal_offset, SEEK_SET);
for (i = 0; i < pal_size; i++) {
uint32_t v = AV_RL32(data + size - 4*pal_size + 4*i);
uint32_t v = avist->palette[i];
avio_wl32(pb, v & 0xffffff);
}
avio_seek(pb, cur_offset, SEEK_SET);
avist->hdr_pal_done++;
memcpy(avist->old_palette, avist->palette, pal_size * 4);
avist->pal_offset = 0;
}
avi_stream2fourcc(tag, stream_index, enc->codec_type);
tag[2] = 'p'; tag[3] = 'c';
pc_tag = ff_start_tag(pb, tag);
avio_w8(pb, 0);
avio_w8(pb, pal_size & 0xFF);
avio_wl16(pb, 0); // reserved
for (i = 0; i < pal_size; i++) {
uint32_t v = AV_RL32(data + size - 4*pal_size + 4*i);
avio_wb32(pb, v<<8);
if (memcmp(avist->palette, avist->old_palette, pal_size * 4)) {
avi_stream2fourcc(tag, stream_index, enc->codec_type);
tag[2] = 'p'; tag[3] = 'c';
pc_tag = ff_start_tag(pb, tag);
avio_w8(pb, 0);
avio_w8(pb, pal_size & 0xFF);
avio_wl16(pb, 0); // reserved
for (i = 0; i < pal_size; i++) {
uint32_t v = avist->palette[i];
avio_wb32(pb, v<<8);
}
ff_end_tag(pb, pc_tag);
memcpy(avist->old_palette, avist->palette, pal_size * 4);
if (pb->seekable && avist->strh_flags_offset) {
int64_t cur_offset = avio_tell(pb);
avio_seek(pb, avist->strh_flags_offset, SEEK_SET);
avio_wl32(pb, AVISF_VIDEO_PALCHANGES);
avio_seek(pb, cur_offset, SEEK_SET);
avist->strh_flags_offset = 0;
}
}
ff_end_tag(pb, pc_tag);
}
}
if (ret) {
ret = avi_write_packet_internal(s, pkt);
av_packet_free(&pkt);
return ret;