, _subtitle_codec (0)
, _decode_video (video)
, _decode_audio (audio)
- , _video_pts_offset (0)
- , _audio_pts_offset (0)
+ , _pts_offset (0)
, _just_sought (false)
{
setup_subtitle ();
insertion of black frames to work.
We will do:
- audio_pts_to_use = audio_pts_from_ffmpeg + audio_pts_offset;
- video_pts_to_use = video_pts_from_ffmpeg + video_pts_offset;
+ audio_pts_to_use = audio_pts_from_ffmpeg + pts_offset;
+ video_pts_to_use = video_pts_from_ffmpeg + pts_offset;
*/
bool const have_video = video && c->first_video();
/* First, make one of them start at 0 */
if (have_audio && have_video) {
- _video_pts_offset = _audio_pts_offset = - min (c->first_video().get(), c->audio_stream()->first_audio.get());
+ _pts_offset = - min (c->first_video().get(), c->audio_stream()->first_audio.get());
} else if (have_video) {
- _video_pts_offset = - c->first_video().get();
+ _pts_offset = - c->first_video().get();
} else if (have_audio) {
- _audio_pts_offset = - c->audio_stream()->first_audio.get();
+ _pts_offset = - c->audio_stream()->first_audio.get();
}
/* Now adjust both so that the video pts starts on a frame */
if (have_video && have_audio) {
- double first_video = c->first_video().get() + _video_pts_offset;
+ double first_video = c->first_video().get() + _pts_offset;
double const old_first_video = first_video;
/* Round the first video up to a frame boundary */
first_video = ceil (first_video * c->video_frame_rate()) / c->video_frame_rate ();
}
- _video_pts_offset += first_video - old_first_video;
- _audio_pts_offset += first_video - old_first_video;
+ _pts_offset += first_video - old_first_video;
}
}
return;
}
- avcodec_get_frame_defaults (_frame);
-
shared_ptr<const Film> film = _film.lock ();
assert (film);
if (si == _video_stream && _decode_video) {
decode_video_packet ();
- } else if (_ffmpeg_content->audio_stream() && si == _ffmpeg_content->audio_stream()->index (_format_context) && _decode_audio) {
+ } else if (_ffmpeg_content->audio_stream() && _ffmpeg_content->audio_stream()->uses_index (_format_context, si) && _decode_audio) {
decode_audio_packet ();
- } else if (_ffmpeg_content->subtitle_stream() && si == _ffmpeg_content->subtitle_stream()->index (_format_context) && film->with_subtitles ()) {
+ } else if (_ffmpeg_content->subtitle_stream() && _ffmpeg_content->subtitle_stream()->uses_index (_format_context, si) && film->with_subtitles ()) {
decode_subtitle_packet ();
}
shared_ptr<AudioBuffers> audio (new AudioBuffers (_ffmpeg_content->audio_channels(), frames));
switch (audio_sample_format()) {
+ case AV_SAMPLE_FMT_U8:
+ {
+ uint8_t* p = reinterpret_cast<uint8_t *> (data[0]);
+ int sample = 0;
+ int channel = 0;
+ for (int i = 0; i < total_samples; ++i) {
+ audio->data(channel)[sample] = float(*p++) / (1 << 23);
+
+ ++channel;
+ if (channel == _ffmpeg_content->audio_channels()) {
+ channel = 0;
+ ++sample;
+ }
+ }
+ }
+ break;
+
case AV_SAMPLE_FMT_S16:
{
int16_t* p = reinterpret_cast<int16_t *> (data[0]);
}
/* Initial seek time in the stream's timebase */
- int64_t const initial_vt = ((initial / _ffmpeg_content->video_frame_rate()) - _video_pts_offset) / time_base;
+ int64_t const initial_vt = ((initial / _ffmpeg_content->video_frame_rate()) - _pts_offset) / time_base;
av_seek_frame (_format_context, _video_stream, initial_vt, AVSEEK_FLAG_BACKWARD);
avcodec_flush_buffers (_subtitle_codec_context);
}
- _just_sought = true;
+ /* This !accurate is piling hack upon hack; setting _just_sought to true
+ even with accurate == true defeats our attempt to align the start
+ of the video and audio. Here we disable that defeat when accurate == true
+ i.e. when we are making a DCP rather than just previewing one.
+ Ewww. This should be gone in 2.0.
+ */
+ if (!accurate) {
+ _just_sought = true;
+ }
+
_video_position = frame;
if (frame == 0 || !accurate) {
continue;
}
- avcodec_get_frame_defaults (_frame);
-
int finished = 0;
r = avcodec_decode_video2 (video_codec_context(), _frame, &finished, &_packet);
if (r >= 0 && finished) {
_video_position = rint (
- (av_frame_get_best_effort_timestamp (_frame) * time_base + _video_pts_offset) * _ffmpeg_content->video_frame_rate()
+ (av_frame_get_best_effort_timestamp (_frame) * time_base + _pts_offset) * _ffmpeg_content->video_frame_rate()
);
if (_video_position >= (frame - 1)) {
if (_audio_position == 0) {
/* Where we are in the source, in seconds */
double const pts = av_q2d (_format_context->streams[copy_packet.stream_index]->time_base)
- * av_frame_get_best_effort_timestamp(_frame) + _audio_pts_offset;
+ * av_frame_get_best_effort_timestamp(_frame) + _pts_offset;
if (pts > 0) {
/* Emit some silence */
list<pair<shared_ptr<Image>, int64_t> > images = graph->process (_frame);
- string post_process = Filter::ffmpeg_strings (_ffmpeg_content->filters()).second;
-
for (list<pair<shared_ptr<Image>, int64_t> >::iterator i = images.begin(); i != images.end(); ++i) {
shared_ptr<Image> image = i->first;
- if (!post_process.empty ()) {
- image = image->post_process (post_process, true);
- }
if (i->second != AV_NOPTS_VALUE) {
- double const pts = i->second * av_q2d (_format_context->streams[_video_stream]->time_base) + _video_pts_offset;
+ double const pts = i->second * av_q2d (_format_context->streams[_video_stream]->time_base) + _pts_offset;
if (_just_sought) {
/* We just did a seek, so disable any attempts to correct for where we
{
boost::mutex::scoped_lock lm (_mutex);
- if (!_ffmpeg_content->subtitle_stream() || _ffmpeg_content->subtitle_stream()->index (_format_context) >= int (_format_context->nb_streams)) {
+ if (!_ffmpeg_content->subtitle_stream()) {
return;
}
_subtitle_codec_context = _ffmpeg_content->subtitle_stream()->stream(_format_context)->codec;
+ if (_subtitle_codec_context == 0) {
+ throw DecodeError (N_("could not find subtitle stream"));
+ }
+
_subtitle_codec = avcodec_find_decoder (_subtitle_codec_context->codec_id);
if (_subtitle_codec == 0) {
- throw DecodeError (_("could not find subtitle decoder"));
+ throw DecodeError (N_("could not find subtitle decoder"));
}
if (avcodec_open2 (_subtitle_codec_context, _subtitle_codec, 0) < 0) {
/* Subtitle PTS in seconds (within the source, not taking into account any of the
source that we may have chopped off for the DCP)
*/
- double const packet_time = (static_cast<double> (sub.pts ) / AV_TIME_BASE) + _video_pts_offset;
-
+ double const packet_time = (static_cast<double> (sub.pts ) / AV_TIME_BASE) + _pts_offset;
+
/* hence start time for this sub */
Time const from = (packet_time + (double (sub.start_display_time) / 1e3)) * TIME_HZ;
Time const to = (packet_time + (double (sub.end_display_time) / 1e3)) * TIME_HZ;
projects / dcpomatic.git / blobdiff