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ffmpeg.wasm-core
Commit 3101bb66 authored by Anton Khirnov's avatar Anton Khirnov
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avconv: rename InputStream.next_pts to next_dts. 

It's used to predict dts, not pts.
parent 1270e12e
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Showing with 20 additions and 19 deletions
avconv.c
View file @ 3101bb66
......@@ -168,8 +168,9 @@ typedef struct InputStream {
AVFrame *filtered_frame;
int64_t start; /* time when read started */
int64_t next_pts; /* synthetic pts for cases where pkt.pts
is not defined */
/* predicted dts of the next packet read for this stream or (when there are
* several frames in a packet) of the next frame in current packet */
int64_t next_dts;
int64_t pts; /* current pts */
PtsCorrectionContext pts_ctx;
double ts_scale;
......@@ -1847,11 +1848,11 @@ static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
/* if the decoder provides a pts, use it instead of the last packet pts.
the decoder could be delaying output by a packet or more. */
if (decoded_frame->pts != AV_NOPTS_VALUE)
ist->next_pts = decoded_frame->pts;
ist->next_dts = decoded_frame->pts;
/* increment next_pts to use for the case where the input stream does not
/* increment next_dts to use for the case where the input stream does not
have timestamps or there are multiple frames in the packet */
ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
avctx->sample_rate;
// preprocess audio (volume)
......@@ -1954,14 +1955,14 @@ static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int
/* no picture yet */
return ret;
}
ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
ist->next_dts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
decoded_frame->pkt_dts);
if (pkt->duration)
ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
else if (ist->st->codec->time_base.num != 0) {
int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
ist->st->codec->ticks_per_frame;
ist->next_pts += ((int64_t)AV_TIME_BASE *
ist->next_dts += ((int64_t)AV_TIME_BASE *
ist->st->codec->time_base.num * ticks) /
ist->st->codec->time_base.den;
}
......@@ -2091,8 +2092,8 @@ static int output_packet(InputStream *ist,
int64_t pkt_pts = AV_NOPTS_VALUE;
AVPacket avpkt;
if (ist->next_pts == AV_NOPTS_VALUE)
ist->next_pts = ist->pts;
if (ist->next_dts == AV_NOPTS_VALUE)
ist->next_dts = ist->pts;
if (pkt == NULL) {
/* EOF handling */
......@@ -2105,7 +2106,7 @@ static int output_packet(InputStream *ist,
}
if (pkt->dts != AV_NOPTS_VALUE)
ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
ist->next_dts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
if (pkt->pts != AV_NOPTS_VALUE)
pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
......@@ -2114,7 +2115,7 @@ static int output_packet(InputStream *ist,
int ret = 0;
handle_eof:
ist->pts = ist->next_pts;
ist->pts = ist->next_dts;
if (avpkt.size && avpkt.size != pkt->size) {
av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
......@@ -2151,16 +2152,16 @@ static int output_packet(InputStream *ist,
/* handle stream copy */
if (!ist->decoding_needed) {
rate_emu_sleep(ist);
ist->pts = ist->next_pts;
ist->pts = ist->next_dts;
switch (ist->st->codec->codec_type) {
case AVMEDIA_TYPE_AUDIO:
ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
ist->st->codec->sample_rate;
break;
case AVMEDIA_TYPE_VIDEO:
if (ist->st->codec->time_base.num != 0) {
int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
ist->next_pts += ((int64_t)AV_TIME_BASE *
ist->next_dts += ((int64_t)AV_TIME_BASE *
ist->st->codec->time_base.num * ticks) /
ist->st->codec->time_base.den;
}
......@@ -2237,7 +2238,7 @@ static int init_input_stream(int ist_index, OutputStream *output_streams, int nb
}
ist->pts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
ist->next_pts = AV_NOPTS_VALUE;
ist->next_dts = AV_NOPTS_VALUE;
init_pts_correction(&ist->pts_ctx);
ist->is_start = 1;
......@@ -2759,13 +2760,13 @@ static int transcode(OutputFile *output_files,
pkt.dts *= ist->ts_scale;
//fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n",
// ist->next_pts,
// ist->next_dts,
// pkt.dts, input_files[ist->file_index].ts_offset,
// ist->st->codec->codec_type);
if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE
&& (is->iformat->flags & AVFMT_TS_DISCONT)) {
int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
int64_t delta = pkt_dts - ist->next_pts;
int64_t delta = pkt_dts - ist->next_dts;
if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->pts) && !copy_ts) {
input_files[ist->file_index].ts_offset -= delta;
av_log(NULL, AV_LOG_DEBUG,
......
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