From 2df0bbaca5ab0f66d3554ff751f89eba3a95d042 Mon Sep 17 00:00:00 2001 From: Mats Peterson Date: Sat, 5 Mar 2016 12:16:57 +0100 Subject: lavf/avienc: Add support for palette side data Signed-off-by: Michael Niedermayer --- libavformat/avienc.c | 91 +++++++++++++++++++++++++++++++++++----------------- 1 file changed, 62 insertions(+), 29 deletions(-) (limited to 'libavformat/avienc.c') diff --git a/libavformat/avienc.c b/libavformat/avienc.c index ca505f407a..9bf755efba 100644 --- a/libavformat/avienc.c +++ b/libavformat/avienc.c @@ -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; - - 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 (!pkt->size) + return avi_write_packet_internal(s, pkt); /* Passthrough */ + + 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; -- cgit v1.2.3