Hack in missing bits for ubuntu trusty/libav/avresample

src/zm_ffmpeg.cpp

@@ -434,6 +434,35 @@ unsigned int zm_av_packet_ref( AVPacket *dst, AVPacket *src ) {
   dst->stream_index = src->stream_index;
   return 0;
 }
+const char *avcodec_get_name(enum AVCodecID id) {
+  const AVCodecDescriptor *cd;
+  if ( id == AV_CODEC_ID_NONE)
+    return "none";
+  cd = avcodec_descriptor_get(id);
+  if (cd)
+    return cd->name;
+  AVCodec *codec;
+  codec = avcodec_find_decoder(id);
+  if (codec) 
+    return codec->name;
+  codec = avcodec_find_encoder(id);
+  if (codec)
+    return codec->name;
+  return "unknown codec";
+}
+
+void av_packet_rescale_ts(
+    AVPacket *pkt,
+    AVRational src_tb,
+    AVRational dst_tb
+    ) {
+  if ( pkt->pts != AV_NOPTS_VALUE)
+    pkt->pts = av_rescale_q(pkt->pts, src_tb, dst_tb);
+  if ( pkt->dts != AV_NOPTS_VALUE)
+    pkt->dts = av_rescale_q(pkt->dts, src_tb, dst_tb);
+  if ( pkt->duration != AV_NOPTS_VALUE)
+    pkt->duration = av_rescale_q(pkt->duration, src_tb, dst_tb);
+}
 #endif
 
 bool is_video_stream( AVStream * stream ) {
@@ -646,7 +675,7 @@ int zm_resample_audio(
 #if defined(HAVE_LIBSWRESAMPLE)
     SwrContext *resample_ctx,
 #else
-#if defined(HAVE_LIBSWRESAMPLE)
+#if defined(HAVE_LIBAVRESAMPLE)
     AVAudioResampleContext *resample_ctx,
 #endif
 #endif
@@ -692,6 +721,24 @@ int zm_resample_audio(
   zm_dump_frame(out_frame, "Out frame after resample delay");
   return 1;
 }
+int zm_resample_get_delay(
+#if defined(HAVE_LIBSWRESAMPLE)
+        SwrContext *resample_ctx,
+#else
+#if defined(HAVE_LIBAVRESAMPLE)
+            AVAudioResampleContext *resample_ctx,
+#endif
+#endif
+            int time_base
+    ) { 
+#if defined(HAVE_LIBSWRESAMPLE)
+  return sws_get_delay(resample_ctx, time_base);
+#else
+#if defined(HAVE_LIBAVRESAMPLE)
+  return avresample_available(resample_ctx);
+#endif
+#endif
+}
 #endif
 
 int zm_add_samples_to_fifo(AVAudioFifo *fifo, AVFrame *frame) {
@@ -727,3 +774,4 @@ int zm_get_samples_from_fifo(AVAudioFifo *fifo, AVFrame *frame) {
   zm_dump_frame(frame, "Out frame after fifo read");
   return 1;
 }
+

src/zm_ffmpeg.h

@@ -337,6 +337,9 @@ void zm_dump_codecpar(const AVCodecParameters *par);
 #else
     unsigned int zm_av_packet_ref( AVPacket *dst, AVPacket *src );
     #define zm_av_packet_unref( packet ) av_free_packet( packet )
+    const char *avcodec_get_name(AVCodecID id);
+
+    void av_packet_rescale_ts(AVPacket *pkt, AVRational src_tb, AVRational dst_tb);
 #endif
 #if LIBAVCODEC_VERSION_CHECK(52, 23, 0, 23, 0)
       #define zm_avcodec_decode_video( context, rawFrame, frameComplete, packet ) avcodec_decode_video2( context, rawFrame, frameComplete, packet )
@@ -375,15 +378,28 @@ int zm_resample_audio(
 #if defined(HAVE_LIBSWRESAMPLE)
     SwrContext *resample_ctx,
 #else
-#if defined(HAVE_LIBSWRESAMPLE)
+#if defined(HAVE_LIBAVRESAMPLE)
     AVAudioResampleContext *resample_ctx,
 #endif
 #endif
     AVFrame *in_frame,
     AVFrame *out_frame
     );
+int zm_resample_get_delay(
+#if defined(HAVE_LIBSWRESAMPLE)
+    SwrContext *resample_ctx,
+#else
+#if defined(HAVE_LIBAVRESAMPLE)
+    AVAudioResampleContext *resample_ctx,
 #endif
+#endif
+    int time_base
+    );
+
+#endif
+
 int zm_add_samples_to_fifo(AVAudioFifo *fifo, AVFrame *frame);
 int zm_get_samples_from_fifo(AVAudioFifo *fifo, AVFrame *frame);
 
+
 #endif // ZM_FFMPEG_H

src/zm_videostore.cpp

@@ -445,21 +445,12 @@ VideoStore::~VideoStore() {
       /*
        * At the end of the file, we pass the remaining samples to
        * the encoder. */
-      while ( swr_get_delay(resample_ctx, audio_out_ctx->sample_rate) ) {
-        swr_convert_frame(resample_ctx, out_frame, NULL);
-        int ret = av_audio_fifo_realloc(fifo, av_audio_fifo_size(fifo) + out_frame->nb_samples);
-        if ( ret < 0 ) {
-          Error("Could not reallocate FIFO to %d samples",
-              av_audio_fifo_size(fifo) + out_frame->nb_samples);
-        } else {
-          /** Store the new samples in the FIFO buffer. */
-          ret = av_audio_fifo_write(fifo, (void **)out_frame->data, out_frame->nb_samples);
-          if ( ret < out_frame->nb_samples ) {
-            Error("Could not write data to FIFO. %d written, expecting %d. Reason %s",
-                ret, out_frame->nb_samples, av_make_error_string(ret).c_str());
-          }
+      while ( zm_resample_get_delay(resample_ctx, audio_out_ctx->sample_rate) ) {
+        zm_resample_audio(resample_ctx, out_frame, NULL);
+
+        if ( zm_add_samples_to_fifo(fifo, out_frame) ) {
           // Should probably set the frame size to what is reported FIXME
-          if ( av_audio_fifo_read(fifo, (void **)out_frame->data, frame_size) ) {
+          if ( zm_get_samples_from_fifo(fifo, out_frame) ) {
             if ( zm_send_frame_receive_packet(audio_out_ctx, out_frame, pkt) ) {
               pkt.stream_index = audio_out_stream->index;
 
@@ -980,7 +971,7 @@ int VideoStore::writeAudioFramePacket(AVPacket *ipkt) {
       write_packet(&opkt, audio_out_stream);
       zm_av_packet_unref(&opkt);
 
-      if ( swr_get_delay(resample_ctx, out_frame->sample_rate) < out_frame->nb_samples)
+      if ( zm_resample_get_delay(resample_ctx, out_frame->sample_rate) < out_frame->nb_samples)
         break;
       // This will send a null frame, emptying out the resample buffer
       input_frame = NULL;

src/zm_videostore.h

@@ -47,12 +47,12 @@ private:
   AVCodecContext *audio_out_ctx;
 #ifdef HAVE_LIBSWRESAMPLE
   SwrContext *resample_ctx;
-  AVAudioFifo *fifo;
 #else
 #ifdef HAVE_LIBAVRESAMPLE
   AVAudioResampleContext* resample_ctx;
 #endif
 #endif
+  AVAudioFifo *fifo;
   uint8_t *converted_in_samples;
     
 	const char *filename;