Stop using static initialisation so that dcpomatic::write() can be called more than...

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

diff --git a/src/lib/ffmpeg_examiner.cc b/src/lib/ffmpeg_examiner.cc
index 5e53f0974cd61865d8c09287c4b806590ca65d2f..fdcacb465602693fba0bf668cc82d7bd9b82ddd6 100644 (file)
--- a/src/lib/ffmpeg_examiner.cc
+++ b/src/lib/ffmpeg_examiner.cc
@@ -26,8 +26,8 @@
 #include "ffmpeg_audio_stream.h"
 #include "ffmpeg_subtitle_stream.h"
 #include "util.h"
-#include "warnings.h"
-DCPOMATIC_DISABLE_WARNINGS
+#include <dcp/warnings.h>
+LIBDCP_DISABLE_WARNINGS
 extern "C" {
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
@@ -37,7 +37,7 @@ extern "C" {
 #include <libavutil/display.h>
 #include <libavutil/eval.h>
 }
-DCPOMATIC_ENABLE_WARNINGS
+LIBDCP_ENABLE_WARNINGS
 #include <iostream>
 
 #include "i18n.h"
@@ -221,22 +221,25 @@ FFmpegExaminer::video_packet (AVCodecContext* context, string& temporal_referenc
                return false;
        }
 
-       int r = avcodec_send_packet (context, packet);
-       if (r < 0 && !(r == AVERROR_EOF && !packet)) {
-               /* We could cope with AVERROR(EAGAIN) and re-send the packet but I think it should never happen.
-                * AVERROR_EOF can happen during flush if we've already sent a flush packet.
-                */
-               throw DecodeError (N_("avcodec_send_packet"), N_("FFmpegExaminer::video_packet"), r);
-       }
+       bool pending = false;
+       do {
+               int r = avcodec_send_packet (context, packet);
+               if (r < 0) {
+                       LOG_WARNING("avcodec_send_packet returned %1 for a video packet", r);
+               }
 
-       r = avcodec_receive_frame (context, _video_frame);
-       if (r == AVERROR(EAGAIN)) {
-               /* More input is required */
-               return true;
-       } else if (r == AVERROR_EOF) {
-               /* No more output is coming */
-               return false;
-       }
+               /* EAGAIN means we should call avcodec_receive_frame and then re-send the same packet */
+               pending = r == AVERROR(EAGAIN);
+
+               r = avcodec_receive_frame (context, _video_frame);
+               if (r == AVERROR(EAGAIN)) {
+                       /* More input is required */
+                       return true;
+               } else if (r == AVERROR_EOF) {
+                       /* No more output is coming */
+                       return false;
+               }
+       } while (pending);
 
        if (!_first_video) {
                _first_video = frame_time (_video_frame, _format_context->streams[_video_stream.get()]);
@@ -264,12 +267,9 @@ FFmpegExaminer::audio_packet (AVCodecContext* context, shared_ptr<FFmpegAudioStr
        }
 
        int r = avcodec_send_packet (context, packet);
-       if (r < 0 && !(r == AVERROR_EOF && !packet) && r != AVERROR(EAGAIN)) {
-               /* We could cope with AVERROR(EAGAIN) and re-send the packet but I think it should never happen.
-                * AVERROR_EOF can happen during flush if we've already sent a flush packet.
-                * EAGAIN means we need to do avcodec_receive_frame, so just carry on and do that.
-                */
-               throw DecodeError (N_("avcodec_send_packet"), N_("FFmpegExaminer::audio_packet"), r);
+       if (r < 0) {
+               LOG_WARNING("avcodec_send_packet returned %1 for an audio packet", r);
+               return;
        }
 
        auto frame = audio_frame (stream);
@@ -489,6 +489,7 @@ PixelQuanta
 FFmpegExaminer::pixel_quanta () const
 {
        auto const desc = av_pix_fmt_desc_get(video_codec_context()->pix_fmt);
+       DCPOMATIC_ASSERT (desc);
        return { 1 << desc->log2_chroma_w, 1 << desc->log2_chroma_h };
 }