return 1;
}
+int FFVideoStream::probe(int64_t pos)
+{
+ int ret = video_seek(pos);
+ if( ret < 0 ) return -1;
+ if( !frame && !(frame=av_frame_alloc()) ) {
+ fprintf(stderr, "FFVideoStream::probe: av_frame_alloc failed\n");
+ return -1;
+ }
+
+ if (ffmpeg->interlace_from_codec) return 1;
+
+ ret = read_frame(frame);
+ if( ret > 0 ) {
+ //printf("codec interlace: %i \n",frame->interlaced_frame);
+ //printf("codec tff: %i \n",frame->top_field_first);
+
+ if (!frame->interlaced_frame)
+ ffmpeg->interlace_from_codec = AV_FIELD_PROGRESSIVE;
+ if ((frame->interlaced_frame) && (frame->top_field_first))
+ ffmpeg->interlace_from_codec = AV_FIELD_TT;
+ if ((frame->interlaced_frame) && (!frame->top_field_first))
+ ffmpeg->interlace_from_codec = AV_FIELD_BB;
+ //printf("Interlace mode from codec: %i\n", ffmpeg->interlace_from_codec);
+
+ }
+
+ if( frame->format == AV_PIX_FMT_NONE || frame->width <= 0 || frame->height <= 0 )
+ ret = -1;
+
+ ret = ret > 0 ? 1 : ret < 0 ? -1 : 0;
+ return ret;
+}
+
int FFVideoStream::load(VFrame *vframe, int64_t pos)
{
int ret = video_seek(pos);
fprintf(stderr, "FFVideoStream::load: av_frame_alloc failed\n");
return -1;
}
+
+
int i = MAX_RETRY + pos - curr_pos;
+ int64_t cache_start = 0;
while( ret>=0 && !flushed && curr_pos<=pos && --i>=0 ) {
ret = read_frame(frame);
if( ret > 0 ) {
- if( frame->key_frame && seeking < 0 )
- seeking = 1;
- if( ffmpeg->file_base->get_use_cache() && seeking > 0 && curr_pos < pos ) {
- VFrame *cache_frame = ffmpeg->file_base->new_cache_frame(vframe, curr_pos);
- if( cache_frame ) {
- ret = convert_cmodel(cache_frame, frame);
- ffmpeg->file_base->put_cache_frame();
+ if( frame->key_frame && seeking < 0 ) {
+ int use_cache = ffmpeg->get_use_cache();
+ if( use_cache < 0 ) {
+// for reverse read, reload file frame_cache from keyframe to pos
+ ffmpeg->purge_cache();
+ int count = preferences->cache_size /
+ vframe->get_data_size() / 2; // try to burn only 1/2 of cache
+ cache_start = pos - count + 1;
+ seeking = 1;
}
+ else
+ seeking = 0;
+ }
+ if( seeking > 0 && curr_pos >= cache_start && curr_pos < pos ) {
+ int vw =vframe->get_w(), vh = vframe->get_h();
+ int vcolor_model = vframe->get_color_model();
+// do not use shm here, puts too much pressure on 32bit systems
+ VFrame *cache_frame = new VFrame(vw, vh, vcolor_model, 0);
+ ret = convert_cmodel(cache_frame, frame);
+ if( ret > 0 )
+ ffmpeg->put_cache_frame(cache_frame, curr_pos);
}
++curr_pos;
}
int FFVideoStream::drain()
{
+
return 0;
}
flow = 1;
decoding = encoding = 0;
has_audio = has_video = 0;
+ interlace_from_codec = 0;
opts = 0;
opt_duration = -1;
opt_video_filter = 0;
return ret;
}
+void FFMPEG::put_cache_frame(VFrame *frame, int64_t position)
+{
+ file_base->file->put_cache_frame(frame, position, 0);
+}
+
+int FFMPEG::get_use_cache()
+{
+ return file_base->file->get_use_cache();
+}
+
+void FFMPEG::purge_cache()
+{
+ file_base->file->purge_cache();
+}
+
FFCodecRemap::FFCodecRemap()
{
old_codec = 0;
AVPixelFormat pix_fmt = (AVPixelFormat)st->codecpar->format;
const char *pfn = av_get_pix_fmt_name(pix_fmt);
report(" pix %s\n", pfn ? pfn : unkn);
+ int interlace = st->codecpar->field_order;
+ report(" interlace (container level): %i\n", interlace ? interlace : -1);
+ int interlace_codec = interlace_from_codec;
+ report(" interlace (codec level): %i\n", interlace_codec ? interlace_codec : -1);
enum AVColorSpace space = st->codecpar->color_space;
const char *nm = av_color_space_name(space);
report(" color space:%s", nm ? nm : unkn);
vid->interlaced = asset->interlace_mode == ILACE_MODE_TOP_FIRST ||
asset->interlace_mode == ILACE_MODE_BOTTOM_FIRST ? 1 : 0;
vid->top_field_first = asset->interlace_mode == ILACE_MODE_TOP_FIRST ? 1 : 0;
+ switch (asset->interlace_mode) {
+ case ILACE_MODE_TOP_FIRST:
+ if (ctx->codec->id == AV_CODEC_ID_MJPEG)
+ av_dict_set(&sopts, "field_order", "tt", 0);
+ else
+ av_dict_set(&sopts, "field_order", "tb", 0);
+ if (ctx->codec_id != AV_CODEC_ID_MJPEG)
+ av_dict_set(&sopts, "flags", "+ilme+ildct", 0);
+ break;
+ case ILACE_MODE_BOTTOM_FIRST:
+ if (ctx->codec->id == AV_CODEC_ID_MJPEG)
+ av_dict_set(&sopts, "field_order", "bb", 0);
+ else
+ av_dict_set(&sopts, "field_order", "bt", 0);
+ if (ctx->codec_id != AV_CODEC_ID_MJPEG)
+ av_dict_set(&sopts, "flags", "+ilme+ildct", 0);
+ break;
+ case ILACE_MODE_NOTINTERLACED: av_dict_set(&sopts, "field_order", "progressive", 0); break;
+ }
break; }
default:
eprintf(_("not audio/video, %s:%s\n"), codec_name, filename);
return 0;
}
+int FFMPEG::video_probe(int64_t pos)
+{
+ int vidx = vstrm_index[0].st_idx;
+ FFVideoStream *vid = ffvideo[vidx];
+ vid->probe(pos);
+
+ int interlace1 = interlace_from_codec;
+ //printf("interlace from codec: %i\n", interlace1);
+
+ switch (interlace1)
+ {
+ case AV_FIELD_TT:
+ case AV_FIELD_TB:
+ return ILACE_MODE_TOP_FIRST;
+ case AV_FIELD_BB:
+ case AV_FIELD_BT:
+ return ILACE_MODE_BOTTOM_FIRST;
+ case AV_FIELD_PROGRESSIVE:
+ return ILACE_MODE_NOTINTERLACED;
+ default:
+ return ILACE_MODE_UNDETECTED;
+ }
+
+}
+
+
+
int FFMPEG::video_seek(int stream, int64_t pos)
{
int vidx = vstrm_index[stream].st_idx;
float FFMPEG::ff_aspect_ratio(int stream)
{
- return ffvideo[stream]->aspect_ratio;
+ //return ffvideo[stream]->aspect_ratio;
+ AVFormatContext *fmt_ctx = ffvideo[stream]->fmt_ctx;
+ AVStream *strm = ffvideo[stream]->st;
+ AVCodecParameters *par = ffvideo[stream]->st->codecpar;
+ AVRational dar;
+ AVRational sar = av_guess_sample_aspect_ratio(fmt_ctx, strm, NULL);
+ if (sar.num) {
+ av_reduce(&dar.num, &dar.den,
+ par->width * sar.num,
+ par->height * sar.den,
+ 1024*1024);
+ return av_q2d(dar);
+ }
+ return ffvideo[stream]->aspect_ratio;
}
const char* FFMPEG::ff_video_codec(int stream)
return ffvideo[stream]->st->codecpar->color_range == AVCOL_RANGE_MPEG ? 1 : 0;
}
+int FFMPEG::ff_interlace(int stream)
+{
+// https://ffmpeg.org/doxygen/trunk/structAVCodecParserContext.html
+/* reads from demuxer because codec frame not ready */
+ int interlace0 = ffvideo[stream]->st->codecpar->field_order;
+
+ switch (interlace0)
+ {
+ case AV_FIELD_TT:
+ case AV_FIELD_TB:
+ return ILACE_MODE_TOP_FIRST;
+ case AV_FIELD_BB:
+ case AV_FIELD_BT:
+ return ILACE_MODE_BOTTOM_FIRST;
+ case AV_FIELD_PROGRESSIVE:
+ return ILACE_MODE_NOTINTERLACED;
+ default:
+ return ILACE_MODE_UNDETECTED;
+ }
+
+}
+
+
+
int FFMPEG::ff_cpus()
{
return !file_base ? 1 : file_base->file->cpus;
projects / goodguy / cinelerra.git / blobdiff