Bump ffmpeg to 5.1.2 "Riemann"

[dcpomatic.git] / src / lib / ffmpeg_examiner.cc

diff --git a/src/lib/ffmpeg_examiner.cc b/src/lib/ffmpeg_examiner.cc
index fdcacb465602693fba0bf668cc82d7bd9b82ddd6..d2d1093a9500abac1982adba50b1621ffb941a3b 100644 (file)
--- a/src/lib/ffmpeg_examiner.cc
+++ b/src/lib/ffmpeg_examiner.cc
@@ -73,14 +73,6 @@ FFmpegExaminer::FFmpegExaminer (shared_ptr<const FFmpegContent> c, shared_ptr<Jo
                auto codec = _codec_context[i] ? _codec_context[i]->codec : nullptr;
                if (s->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && codec) {
 
-                       /* This is a hack; sometimes it seems that _audio_codec_context->channel_layout isn't set up,
-                          so bodge it here.  No idea why we should have to do this.
-                       */
-
-                       if (s->codecpar->channel_layout == 0) {
-                               s->codecpar->channel_layout = av_get_default_channel_layout (s->codecpar->channels);
-                       }
-
                        DCPOMATIC_ASSERT (_format_context->duration != AV_NOPTS_VALUE);
                        DCPOMATIC_ASSERT (codec->name);
 
@@ -91,7 +83,8 @@ FFmpegExaminer::FFmpegExaminer (shared_ptr<const FFmpegContent> c, shared_ptr<Jo
                                        s->id,
                                        s->codecpar->sample_rate,
                                        llrint ((double(_format_context->duration) / AV_TIME_BASE) * s->codecpar->sample_rate),
-                                       s->codecpar->channels
+                                       s->codecpar->ch_layout.nb_channels,
+                                       s->codecpar->bits_per_raw_sample ? s->codecpar->bits_per_raw_sample : s->codecpar->bits_per_coded_sample
                                        )
                                );
 
@@ -382,6 +375,19 @@ FFmpegExaminer::bits_per_pixel () const
 }
 
 
+bool
+FFmpegExaminer::has_alpha() const
+{
+       if (video_codec_context()->pix_fmt == -1) {
+               return false;
+       }
+
+       auto const d = av_pix_fmt_desc_get(video_codec_context()->pix_fmt);
+       DCPOMATIC_ASSERT(d);
+       return d->flags & AV_PIX_FMT_FLAG_ALPHA;
+}
+
+
 bool
 FFmpegExaminer::yuv () const
 {