Improve OpenFileError so that it doesn't say "opening for read"
[dcpomatic.git] / src / lib / ffmpeg_decoder.cc
index 32e9c231414d8905def48f2a293a7bb4d0415152..62d4d2655f59c84af57f96c8c3d25e747794a352 100644 (file)
@@ -27,6 +27,7 @@
 #include "image.h"
 #include "util.h"
 #include "log.h"
+#include "dcpomatic_log.h"
 #include "ffmpeg_decoder.h"
 #include "text_decoder.h"
 #include "ffmpeg_audio_stream.h"
@@ -58,11 +59,6 @@ extern "C" {
 
 #include "i18n.h"
 
-#define LOG_GENERAL(...) _log->log (String::compose (__VA_ARGS__), LogEntry::TYPE_GENERAL);
-#define LOG_ERROR(...) _log->log (String::compose (__VA_ARGS__), LogEntry::TYPE_ERROR);
-#define LOG_WARNING_NC(...) _log->log (__VA_ARGS__, LogEntry::TYPE_WARNING);
-#define LOG_WARNING(...) _log->log (String::compose (__VA_ARGS__), LogEntry::TYPE_WARNING);
-
 using std::cout;
 using std::string;
 using std::vector;
@@ -77,15 +73,16 @@ using boost::split;
 using boost::optional;
 using boost::dynamic_pointer_cast;
 using dcp::Size;
+using namespace dcpomatic;
 
-FFmpegDecoder::FFmpegDecoder (shared_ptr<const FFmpegContent> c, shared_ptr<Log> log, bool fast)
+FFmpegDecoder::FFmpegDecoder (shared_ptr<const Film> film, shared_ptr<const FFmpegContent> c, bool fast)
        : FFmpeg (c)
-       , _log (log)
+       , Decoder (film)
        , _have_current_subtitle (false)
 {
-       if (c->video) {
-               video.reset (new VideoDecoder (this, c, log));
-               _pts_offset = pts_offset (c->ffmpeg_audio_streams(), c->first_video(), c->active_video_frame_rate());
+       if (c->video && c->video->use()) {
+               video.reset (new VideoDecoder (this, c));
+               _pts_offset = pts_offset (c->ffmpeg_audio_streams(), c->first_video(), c->active_video_frame_rate(film));
                /* It doesn't matter what size or pixel format this is, it just needs to be black */
                _black_image.reset (new Image (AV_PIX_FMT_RGB24, dcp::Size (128, 128), true));
                _black_image->make_black ();
@@ -94,12 +91,12 @@ FFmpegDecoder::FFmpegDecoder (shared_ptr<const FFmpegContent> c, shared_ptr<Log>
        }
 
        if (c->audio) {
-               audio.reset (new AudioDecoder (this, c->audio, log, fast));
+               audio.reset (new AudioDecoder (this, c->audio, fast));
        }
 
        if (c->only_text()) {
                /* XXX: this time here should be the time of the first subtitle, not 0 */
-               text.push_back (shared_ptr<TextDecoder> (new TextDecoder (this, c->only_text(), log, ContentTime())));
+               text.push_back (shared_ptr<TextDecoder> (new TextDecoder (this, c->only_text(), ContentTime())));
        }
 
        _next_time.resize (_format_context->nb_streams);
@@ -115,7 +112,7 @@ FFmpegDecoder::flush ()
 
        /* XXX: should we reset _packet.data and size after each *_decode_* call? */
 
-       while (video && decode_video_packet ()) {}
+       while (video && decode_video_packet()) {}
 
        if (audio) {
                decode_audio_packet ();
@@ -123,21 +120,21 @@ FFmpegDecoder::flush ()
 
        /* Make sure all streams are the same length and round up to the next video frame */
 
-       FrameRateChange const frc = _ffmpeg_content->film()->active_frame_rate_change(_ffmpeg_content->position());
-       ContentTime full_length (_ffmpeg_content->full_length(), frc);
+       FrameRateChange const frc = film()->active_frame_rate_change(_ffmpeg_content->position());
+       ContentTime full_length (_ffmpeg_content->full_length(film()), frc);
        full_length = full_length.ceil (frc.source);
        if (video) {
                double const vfr = _ffmpeg_content->video_frame_rate().get();
                Frame const f = full_length.frames_round (vfr);
-               Frame v = video->position().frames_round (vfr) + 1;
+               Frame v = video->position(film()).frames_round(vfr) + 1;
                while (v < f) {
-                       video->emit (shared_ptr<const ImageProxy> (new RawImageProxy (_black_image)), v);
+                       video->emit (film(), shared_ptr<const ImageProxy> (new RawImageProxy (_black_image)), v);
                        ++v;
                }
        }
 
        BOOST_FOREACH (shared_ptr<FFmpegAudioStream> i, _ffmpeg_content->ffmpeg_audio_streams ()) {
-               ContentTime a = audio->stream_position(i);
+               ContentTime a = audio->stream_position(film(), i);
                /* Unfortunately if a is 0 that really means that we don't know the stream position since
                   there has been no data on it since the last seek.  In this case we'll just do nothing
                   here.  I'm not sure if that's the right idea.
@@ -147,7 +144,7 @@ FFmpegDecoder::flush ()
                                ContentTime to_do = min (full_length - a, ContentTime::from_seconds (0.1));
                                shared_ptr<AudioBuffers> silence (new AudioBuffers (i->channels(), to_do.frames_ceil (i->frame_rate())));
                                silence->make_silent ();
-                               audio->emit (i, silence, a);
+                               audio->emit (film(), i, silence, a);
                                a += to_do;
                        }
                }
@@ -161,6 +158,12 @@ FFmpegDecoder::flush ()
 bool
 FFmpegDecoder::pass ()
 {
+#ifdef DCPOMATIC_VARIANT_SWAROOP
+       if (_ffmpeg_content->encrypted() && !_ffmpeg_content->kdm()) {
+               return true;
+       }
+#endif
+
        int r = av_read_frame (_format_context, &_packet);
 
        /* AVERROR_INVALIDDATA can apparently be returned sometimes even when av_read_frame
@@ -182,7 +185,7 @@ FFmpegDecoder::pass ()
        int const si = _packet.stream_index;
        shared_ptr<const FFmpegContent> fc = _ffmpeg_content;
 
-       if (_video_stream && si == _video_stream.get() && !video->ignore()) {
+       if (_video_stream && si == _video_stream.get() && video && !video->ignore()) {
                decode_video_packet ();
        } else if (fc->subtitle_stream() && fc->subtitle_stream()->uses_index(_format_context, si) && !only_text()->ignore()) {
                decode_subtitle_packet ();
@@ -361,6 +364,7 @@ FFmpegDecoder::seek (ContentTime time, bool accurate)
        if (_video_stream) {
                stream = _video_stream;
        } else {
+               DCPOMATIC_ASSERT (_ffmpeg_content->audio);
                shared_ptr<FFmpegAudioStream> s = dynamic_pointer_cast<FFmpegAudioStream> (_ffmpeg_content->audio->stream ());
                if (s) {
                        stream = s->index (_format_context);
@@ -380,6 +384,14 @@ FFmpegDecoder::seek (ContentTime time, bool accurate)
                AVSEEK_FLAG_BACKWARD
                );
 
+       {
+               /* Force re-creation of filter graphs to reset them and hence to make sure
+                  they don't have any pre-seek frames knocking about.
+               */
+               boost::mutex::scoped_lock lm (_filter_graphs_mutex);
+               _filter_graphs.clear ();
+       }
+
        if (video_codec_context ()) {
                avcodec_flush_buffers (video_codec_context());
        }
@@ -479,7 +491,7 @@ FFmpegDecoder::decode_audio_packet ()
 
                        /* Give this data provided there is some, and its time is sane */
                        if (ct >= ContentTime() && data->frames() > 0) {
-                               audio->emit (*stream, data, ct);
+                               audio->emit (film(), *stream, data, ct);
                        }
                }
 
@@ -525,9 +537,11 @@ FFmpegDecoder::decode_video_packet ()
 
                if (i->second != AV_NOPTS_VALUE) {
                        double const pts = i->second * av_q2d (_format_context->streams[_video_stream.get()]->time_base) + _pts_offset.seconds ();
+
                        video->emit (
+                               film(),
                                shared_ptr<ImageProxy> (new RawImageProxy (image)),
-                               llrint (pts * _ffmpeg_content->active_video_frame_rate ())
+                               llrint(pts * _ffmpeg_content->active_video_frame_rate(film()))
                                );
                } else {
                        LOG_WARNING_NC ("Dropping frame without PTS");
@@ -660,8 +674,19 @@ FFmpegDecoder::decode_bitmap_subtitle (AVSubtitleRect const * rect, ContentTime
                out_p += image->stride()[0] / sizeof (uint32_t);
        }
 
-       int const target_width = subtitle_codec_context()->width;
-       int const target_height = subtitle_codec_context()->height;
+       int target_width = subtitle_codec_context()->width;
+       if (target_width == 0 && video_codec_context()) {
+               /* subtitle_codec_context()->width == 0 has been seen in the wild but I don't
+                  know if it's supposed to mean something from FFmpeg's point of view.
+               */
+               target_width = video_codec_context()->width;
+       }
+       int target_height = subtitle_codec_context()->height;
+       if (target_height == 0 && video_codec_context()) {
+               target_height = video_codec_context()->height;
+       }
+       DCPOMATIC_ASSERT (target_width);
+       DCPOMATIC_ASSERT (target_height);
        dcpomatic::Rect<double> const scaled_rect (
                static_cast<double> (rect->x) / target_width,
                static_cast<double> (rect->y) / target_height,