#include "util.h"
#include "log.h"
#include "ffmpeg_decoder.h"
+#include "ffmpeg_audio_stream.h"
+#include "ffmpeg_subtitle_stream.h"
#include "filter_graph.h"
#include "audio_buffers.h"
#include "ffmpeg_content.h"
+#include "raw_image_proxy.h"
+#include "film.h"
+#include "timer.h"
#include "i18n.h"
+#define LOG_GENERAL(...) _video_content->film()->log()->log (String::compose (__VA_ARGS__), Log::TYPE_GENERAL);
+#define LOG_ERROR(...) _video_content->film()->log()->log (String::compose (__VA_ARGS__), Log::TYPE_ERROR);
+#define LOG_WARNING(...) _video_content->film()->log()->log (__VA_ARGS__, Log::TYPE_WARNING);
+
using std::cout;
using std::string;
using std::vector;
using std::list;
using std::min;
using std::pair;
+using std::make_pair;
using boost::shared_ptr;
using boost::optional;
using boost::dynamic_pointer_cast;
FFmpegDecoder::FFmpegDecoder (shared_ptr<const FFmpegContent> c, shared_ptr<Log> log)
: VideoDecoder (c)
, AudioDecoder (c)
+ , SubtitleDecoder (c)
, FFmpeg (c)
, _log (log)
- , _subtitle_codec_context (0)
- , _subtitle_codec (0)
{
- setup_subtitle ();
-
/* Audio and video frame PTS values may not start with 0. We want
to fiddle them so that:
}
}
-FFmpegDecoder::~FFmpegDecoder ()
-{
- boost::mutex::scoped_lock lm (_mutex);
-
- if (_subtitle_codec_context) {
- avcodec_close (_subtitle_codec_context);
- }
-}
-
void
FFmpegDecoder::flush ()
{
/* Maybe we should fail here, but for now we'll just finish off instead */
char buf[256];
av_strerror (r, buf, sizeof(buf));
- _log->log (String::compose (N_("error on av_read_frame (%1) (%2)"), buf, r));
+ LOG_ERROR (N_("error on av_read_frame (%1) (%2)"), buf, r);
}
flush ();
}
int const si = _packet.stream_index;
-
+
if (si == _video_stream) {
decode_video_packet ();
} else if (_ffmpeg_content->audio_stream() && _ffmpeg_content->audio_stream()->uses_index (_format_context, si)) {
return av_get_bytes_per_sample (audio_sample_format ());
}
-int
-FFmpegDecoder::minimal_run (boost::function<bool (optional<ContentTime>, optional<ContentTime>, int)> finished)
+void
+FFmpegDecoder::seek (ContentTime time, bool accurate)
{
- int frames_read = 0;
- optional<ContentTime> last_video;
- optional<ContentTime> last_audio;
-
- while (!finished (last_video, last_audio, frames_read)) {
- int r = av_read_frame (_format_context, &_packet);
- if (r < 0) {
- /* We should flush our decoders here, possibly yielding a few more frames,
- but the consequence of having to do that is too hideous to contemplate.
- Instead we give up and say that you can't seek too close to the end
- of a file.
- */
- return frames_read;
- }
-
- ++frames_read;
-
- double const time_base = av_q2d (_format_context->streams[_packet.stream_index]->time_base);
-
- if (_packet.stream_index == _video_stream) {
-
- avcodec_get_frame_defaults (_frame);
-
- int got_picture = 0;
- r = avcodec_decode_video2 (video_codec_context(), _frame, &got_picture, &_packet);
- if (r >= 0 && got_picture) {
- last_video = ContentTime::from_seconds (av_frame_get_best_effort_timestamp (_frame) * time_base) + _pts_offset;
- }
+ VideoDecoder::seek (time, accurate);
+ AudioDecoder::seek (time, accurate);
+
+ /* If we are doing an `accurate' seek, we need to use pre-roll, as
+ we don't really know what the seek will give us.
+ */
- } else if (_ffmpeg_content->audio_stream() && _ffmpeg_content->audio_stream()->uses_index (_format_context, _packet.stream_index)) {
- AVPacket copy_packet = _packet;
- while (copy_packet.size > 0) {
-
- int got_frame;
- r = avcodec_decode_audio4 (audio_codec_context(), _frame, &got_frame, &_packet);
- if (r >= 0 && got_frame) {
- last_audio = ContentTime::from_seconds (av_frame_get_best_effort_timestamp (_frame) * time_base) + _pts_offset;
- }
-
- copy_packet.data += r;
- copy_packet.size -= r;
- }
- }
-
- av_free_packet (&_packet);
+ ContentTime pre_roll = accurate ? ContentTime::from_seconds (2) : ContentTime (0);
+ time -= pre_roll;
+ if (time < ContentTime (0)) {
+ time = ContentTime (0);
}
- return frames_read;
-}
-
-bool
-FFmpegDecoder::seek_overrun_finished (ContentTime seek, optional<ContentTime> last_video, optional<ContentTime> last_audio) const
-{
- return (last_video && last_video.get() >= seek) || (last_audio && last_audio.get() >= seek);
-}
-
-bool
-FFmpegDecoder::seek_final_finished (int n, int done) const
-{
- return n == done;
-}
-
-void
-FFmpegDecoder::seek_and_flush (ContentTime t)
-{
- ContentTime const u = t - _pts_offset;
+ ContentTime const u = time - _pts_offset;
int64_t s = u.seconds() / av_q2d (_format_context->streams[_video_stream]->time_base);
if (_ffmpeg_content->audio_stream ()) {
if (audio_codec_context ()) {
avcodec_flush_buffers (audio_codec_context ());
}
- if (_subtitle_codec_context) {
- avcodec_flush_buffers (_subtitle_codec_context);
- }
-}
-
-void
-FFmpegDecoder::seek (ContentTime time, bool accurate)
-{
- VideoDecoder::seek (time, accurate);
- AudioDecoder::seek (time, accurate);
-
- /* If we are doing an accurate seek, our initial shot will be 2s (2 being
- a number plucked from the air) earlier than we want to end up. The loop below
- will hopefully then step through to where we want to be.
- */
-
- ContentTime pre_roll = accurate ? ContentTime::from_seconds (2) : ContentTime (0);
- ContentTime initial_seek = time - pre_roll;
- if (initial_seek < ContentTime (0)) {
- initial_seek = ContentTime (0);
- }
-
- /* Initial seek time in the video stream's timebase */
-
- seek_and_flush (initial_seek);
-
- if (!accurate) {
- /* That'll do */
- return;
- }
-
- int const N = minimal_run (boost::bind (&FFmpegDecoder::seek_overrun_finished, this, time, _1, _2));
-
- seek_and_flush (initial_seek);
- if (N > 0) {
- minimal_run (boost::bind (&FFmpegDecoder::seek_final_finished, this, N - 1, _3));
+ if (subtitle_codec_context ()) {
+ avcodec_flush_buffers (subtitle_codec_context ());
}
}
int const decode_result = avcodec_decode_audio4 (audio_codec_context(), _frame, &frame_finished, ©_packet);
if (decode_result < 0) {
- _log->log (String::compose ("avcodec_decode_audio4 failed (%1)", decode_result));
+ LOG_ERROR ("avcodec_decode_audio4 failed (%1)", decode_result);
return;
}
if (i == _filter_graphs.end ()) {
graph.reset (new FilterGraph (_ffmpeg_content, dcp::Size (_frame->width, _frame->height), (AVPixelFormat) _frame->format));
_filter_graphs.push_back (graph);
- _log->log (String::compose (N_("New graph for %1x%2, pixel format %3"), _frame->width, _frame->height, _frame->format));
+ LOG_GENERAL (N_("New graph for %1x%2, pixel format %3"), _frame->width, _frame->height, _frame->format);
} else {
graph = *i;
}
if (i->second != AV_NOPTS_VALUE) {
double const pts = i->second * av_q2d (_format_context->streams[_video_stream]->time_base) + _pts_offset.seconds ();
- video (image, rint (pts * _ffmpeg_content->video_frame_rate ()));
+ video (
+ shared_ptr<ImageProxy> (new RawImageProxy (image, _video_content->film()->log())),
+ rint (pts * _ffmpeg_content->video_frame_rate ())
+ );
} else {
- _log->log ("Dropping frame without PTS");
+ LOG_WARNING ("Dropping frame without PTS");
}
}
return true;
}
-
-void
-FFmpegDecoder::setup_subtitle ()
-{
- boost::mutex::scoped_lock lm (_mutex);
-
- 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 (N_("could not find subtitle decoder"));
- }
-
- if (avcodec_open2 (_subtitle_codec_context, _subtitle_codec, 0) < 0) {
- throw DecodeError (N_("could not open subtitle decoder"));
- }
-}
-
void
FFmpegDecoder::decode_subtitle_packet ()
{
int got_subtitle;
AVSubtitle sub;
- if (avcodec_decode_subtitle2 (_subtitle_codec_context, &sub, &got_subtitle, &_packet) < 0 || !got_subtitle) {
+ if (avcodec_decode_subtitle2 (subtitle_codec_context(), &sub, &got_subtitle, &_packet) < 0 || !got_subtitle) {
return;
}
indicate that the previous subtitle should stop.
*/
if (sub.num_rects <= 0) {
- image_subtitle (ContentTime (), ContentTime (), shared_ptr<Image> (), dcpomatic::Rect<double> ());
+ image_subtitle (ContentTimePeriod (), shared_ptr<Image> (), dcpomatic::Rect<double> ());
return;
} else if (sub.num_rects > 1) {
throw DecodeError (_("multi-part subtitles not yet supported"));
/* Subtitle PTS (within the source, not taking into account any of the
source that we may have chopped off for the DCP)
*/
- ContentTime packet_time = ContentTime::from_seconds (static_cast<double> (sub.pts) / AV_TIME_BASE) + _pts_offset;
-
- /* hence start time for this sub */
- ContentTime const from = packet_time + ContentTime::from_seconds (sub.start_display_time / 1e3);
- ContentTime const to = packet_time + ContentTime::from_seconds (sub.end_display_time / 1e3);
+ ContentTimePeriod period = subtitle_period (sub) + _pts_offset;
AVSubtitleRect const * rect = sub.rects[0];
dcp::Size const vs = _ffmpeg_content->video_size ();
image_subtitle (
- from,
- to,
+ period,
image,
dcpomatic::Rect<double> (
static_cast<double> (rect->x) / vs.width,
avsubtitle_free (&sub);
}
+
+list<ContentTimePeriod>
+FFmpegDecoder::subtitles_during (ContentTimePeriod p, bool starting) const
+{
+ return _ffmpeg_content->subtitles_during (p, starting);
+}
projects / dcpomatic.git / blobdiff