Merge commit '7751e4693dd10ec98c20fbd9887233b575034272'

* commit '7751e4693dd10ec98c20fbd9887233b575034272':
  ogg: check that the expected number of headers had been parsed
  libx264: change default to closed gop to match x264cli
  Use avcodec_free_frame() to free AVFrames.
  lavf: use a malloced AVFrame in try_decode_frame().
  lavc: add avcodec_free_frame().
  lavc: ensure extended_data is set properly on decoding
  lavc: initialize AVFrame.extended_data in avcodec_get_frame_defaults()
  lavc: use av_mallocz to allocate AVFrames.
  lavc: rename the argument of avcodec_alloc_frame/get_frame_defaults

Conflicts:
	doc/APIchanges
	doc/examples/decoding_encoding.c
	libavcodec/utils.c
	libavcodec/version.h
	libavfilter/src_movie.c
	libavformat/oggdec.c
	libavformat/oggdec.h
	libavformat/oggparsetheora.c
	libavformat/utils.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

21 files changed, 125 insertions, 41 deletions

diff --git a/doc/APIchanges b/doc/APIchanges
index b1a5598584..6584e1950f 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -83,6 +83,10 @@ API changes, most recent first:
 2012-03-26 - a67d9cf - lavfi 2.66.100
   Add avfilter_fill_frame_from_{audio_,}buffer_ref() functions.
 
+2012-09-23 - xxxxxxx - lavc 54.28.0 - avcodec.h
+  Add avcodec_free_frame(). This function must now
+  be used for freeing an AVFrame.
+
 2012-09-12 - xxxxxxx - lavu 51.41.0 - audioconvert.h
   Added AV_CH_LOW_FREQUENCY_2 channel mask value.
 
diff --git a/doc/examples/decoding_encoding.c b/doc/examples/decoding_encoding.c
index e5372a15ef..fcd7dfbe07 100644
--- a/doc/examples/decoding_encoding.c
+++ b/doc/examples/decoding_encoding.c
@@ -222,7 +222,7 @@ static void audio_encode_example(const char *filename)
     fclose(f);
 
     av_freep(&samples);
-    av_freep(&frame);
+    avcodec_free_frame(&frame);
     avcodec_close(c);
     av_free(c);
 }
@@ -320,7 +320,7 @@ static void audio_decode_example(const char *outfilename, const char *filename)
 
     avcodec_close(c);
     av_free(c);
-    av_free(decoded_frame);
+    avcodec_free_frame(&decoded_frame);
 }
 
 /*
@@ -454,7 +454,7 @@ static void video_encode_example(const char *filename, int codec_id)
     avcodec_close(c);
     av_free(c);
     av_freep(&frame->data[0]);
-    av_free(frame);
+    avcodec_free_frame(&frame);
     printf("\n");
 }
 
@@ -594,7 +594,7 @@ static void video_decode_example(const char *outfilename, const char *filename)
 
     avcodec_close(c);
     av_free(c);
-    av_free(picture);
+    avcodec_free_frame(&picture);
     printf("\n");
 }
 
diff --git a/doc/examples/muxing.c b/doc/examples/muxing.c
index 0d3f7abc48..f43a85e8ee 100644
--- a/doc/examples/muxing.c
+++ b/doc/examples/muxing.c
@@ -163,6 +163,7 @@ static void write_audio_frame(AVFormatContext *oc, AVStream *st)
         fprintf(stderr, "Error while writing audio frame\n");
         exit(1);
     }
+    avcodec_free_frame(&frame);
 }
 
 static void close_audio(AVFormatContext *oc, AVStream *st)
diff --git a/ffmpeg.c b/ffmpeg.c
index b74c1121cc..8b3280b9f3 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -417,11 +417,11 @@ void av_noreturn exit_program(int ret)
             bsfc = next;
         }
         output_streams[i]->bitstream_filters = NULL;
+        avcodec_free_frame(&output_streams[i]->filtered_frame);
 
         av_freep(&output_streams[i]->forced_keyframes);
         av_freep(&output_streams[i]->avfilter);
         av_freep(&output_streams[i]->logfile_prefix);
-        av_freep(&output_streams[i]->filtered_frame);
         av_freep(&output_streams[i]);
     }
     for (i = 0; i < nb_input_files; i++) {
@@ -429,7 +429,7 @@ void av_noreturn exit_program(int ret)
         av_freep(&input_files[i]);
     }
     for (i = 0; i < nb_input_streams; i++) {
-        av_freep(&input_streams[i]->decoded_frame);
+        avcodec_free_frame(&input_streams[i]->decoded_frame);
         av_dict_free(&input_streams[i]->opts);
         free_buffer_pool(&input_streams[i]->buffer_pool);
         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
diff --git a/ffplay.c b/ffplay.c
index 569e8c28ca..2337fe0d27 100644
--- a/ffplay.c
+++ b/ffplay.c
@@ -1795,7 +1795,7 @@ static int video_thread(void *arg)
     avfilter_graph_free(&graph);
 #endif
     av_free_packet(&pkt);
-    av_free(frame);
+    avcodec_free_frame(&frame);
     return 0;
 }
 
@@ -2296,7 +2296,7 @@ static void stream_component_close(VideoState *is, int stream_index)
         swr_free(&is->swr_ctx);
         av_freep(&is->audio_buf1);
         is->audio_buf = NULL;
-        av_freep(&is->frame);
+        avcodec_free_frame(&is->frame);
 
         if (is->rdft) {
             av_rdft_end(is->rdft);
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 0d643478f6..f6522d1d1a 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -3509,7 +3509,7 @@ int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src);
 
 /**
  * Allocate an AVFrame and set its fields to default values.  The resulting
- * struct can be deallocated by simply calling av_free().
+ * struct must be freed using avcodec_free_frame().
  *
  * @return An AVFrame filled with default values or NULL on failure.
  * @see avcodec_get_frame_defaults
@@ -3519,9 +3519,21 @@ AVFrame *avcodec_alloc_frame(void);
 /**
  * Set the fields of the given AVFrame to default values.
  *
- * @param pic The AVFrame of which the fields should be set to default values.
+ * @param frame The AVFrame of which the fields should be set to default values.
  */
-void avcodec_get_frame_defaults(AVFrame *pic);
+void avcodec_get_frame_defaults(AVFrame *frame);
+
+/**
+ * Free the frame and any dynamically allocated objects in it,
+ * e.g. extended_data.
+ *
+ * @param frame frame to be freed. The pointer will be set to NULL.
+ *
+ * @warning this function does NOT free the data buffers themselves
+ * (it does not know how, since they might have been allocated with
+ *  a custom get_buffer()).
+ */
+void avcodec_free_frame(AVFrame **frame);
 
 #if FF_API_AVCODEC_OPEN
 /**
diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
index 2c4ffa205a..d012c92a48 100644
--- a/libavcodec/libx264.c
+++ b/libavcodec/libx264.c
@@ -694,6 +694,7 @@ static const AVCodecDefault x264_defaults[] = {
     { "cmp",              "-1" },
     { "threads",          AV_STRINGIFY(X264_THREADS_AUTO) },
     { "thread_type",      "0" },
+    { "flags",            "+cgop" },
     { NULL },
 };
 
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 79bfe1d355..b95b419955 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -695,31 +695,54 @@ enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum
     return fmt[0];
 }
 
-void avcodec_get_frame_defaults(AVFrame *pic)
+void avcodec_get_frame_defaults(AVFrame *frame)
 {
-    memset(pic, 0, sizeof(AVFrame));
+#if LIBAVCODEC_VERSION_MAJOR >= 55
+     // extended_data should explicitly be freed when needed, this code is unsafe currently
+     // also this is not compatible to the <55 ABI/API
+    if (frame->extended_data != frame->data && 0)
+        av_freep(&frame->extended_data);
+#endif
 
-    pic->pts                   =
-    pic->pkt_dts               =
-    pic->pkt_pts               =
-    pic->best_effort_timestamp = AV_NOPTS_VALUE;
-    pic->pkt_duration        = 0;
-    pic->pkt_pos             = -1;
-    pic->key_frame           = 1;
-    pic->sample_aspect_ratio = (AVRational) {0, 1 };
-    pic->format              = -1; /* unknown */
+    memset(frame, 0, sizeof(AVFrame));
+
+    frame->pts                   =
+    frame->pkt_dts               =
+    frame->pkt_pts               =
+    frame->best_effort_timestamp = AV_NOPTS_VALUE;
+    frame->pkt_duration        = 0;
+    frame->pkt_pos             = -1;
+    frame->key_frame           = 1;
+    frame->sample_aspect_ratio = (AVRational) {0, 1 };
+    frame->format              = -1; /* unknown */
+    frame->extended_data       = frame->data;
 }
 
 AVFrame *avcodec_alloc_frame(void)
 {
-    AVFrame *pic = av_malloc(sizeof(AVFrame));
+    AVFrame *frame = av_mallocz(sizeof(AVFrame));
 
-    if (pic == NULL)
+    if (frame == NULL)
         return NULL;
 
-    avcodec_get_frame_defaults(pic);
+    avcodec_get_frame_defaults(frame);
 
-    return pic;
+    return frame;
+}
+
+void avcodec_free_frame(AVFrame **frame)
+{
+    AVFrame *f;
+
+    if (!frame || !*frame)
+        return;
+
+    f = *frame;
+
+    if (f->extended_data != f->data)
+        av_freep(&f->extended_data);
+
+    av_freep(frame);
 }
 
 #define MAKE_ACCESSORS(str, name, type, field) \
@@ -1572,6 +1595,10 @@ int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *pi
     } else
         ret = 0;
 
+    /* many decoders assign whole AVFrames, thus overwriting extended_data;
+     * make sure it's set correctly */
+    picture->extended_data = picture->data;
+
     return ret;
 }
 
@@ -1629,6 +1656,7 @@ int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
                                               int *got_frame_ptr,
                                               const AVPacket *avpkt)
 {
+    int planar, channels;
     int ret = 0;
 
     *got_frame_ptr = 0;
@@ -1710,6 +1738,15 @@ int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
                 ret = avpkt->size;
         }
     }
+
+    /* many decoders assign whole AVFrames, thus overwriting extended_data;
+     * make sure it's set correctly; assume decoders that actually use
+     * extended_data are doing it correctly */
+    planar   = av_sample_fmt_is_planar(frame->format);
+    channels = av_get_channel_layout_nb_channels(frame->channel_layout);
+    if (!(planar && channels > AV_NUM_DATA_POINTERS))
+        frame->extended_data = frame->data;
+
     return ret;
 }
 
diff --git a/libavcodec/version.h b/libavcodec/version.h
index c1d0b7669d..d96086a4a6 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -27,7 +27,7 @@
  */
 
 #define LIBAVCODEC_VERSION_MAJOR 54
-#define LIBAVCODEC_VERSION_MINOR 58
+#define LIBAVCODEC_VERSION_MINOR 59
 #define LIBAVCODEC_VERSION_MICRO 100
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
diff --git a/libavfilter/src_movie.c b/libavfilter/src_movie.c
index 41500f3e92..8ebad6d8ca 100644
--- a/libavfilter/src_movie.c
+++ b/libavfilter/src_movie.c
@@ -336,7 +336,7 @@ static av_cold void movie_uninit(AVFilterContext *ctx)
     av_freep(&movie->file_name);
     av_freep(&movie->st);
     av_freep(&movie->out_index);
-    av_freep(&movie->frame);
+    avcodec_free_frame(&movie->frame);
     if (movie->format_ctx)
         avformat_close_input(&movie->format_ctx);
 }
diff --git a/libavformat/oggdec.c b/libavformat/oggdec.c
index 926326a005..617bc3a986 100644
--- a/libavformat/oggdec.c
+++ b/libavformat/oggdec.c
@@ -485,6 +485,7 @@ static int ogg_packet(AVFormatContext *s, int *sid, int *dstart, int *dsize,
                     s->data_offset = FFMIN(s->data_offset, cur_os->sync_pos);
             }
         }else{
+            os->nb_header++;
             os->pstart += os->psize;
             os->psize = 0;
         }
diff --git a/libavformat/oggdec.h b/libavformat/oggdec.h
index dd005fa61e..79d8179d9d 100644
--- a/libavformat/oggdec.h
+++ b/libavformat/oggdec.h
@@ -51,6 +51,10 @@ struct ogg_codec {
      * 0 if granule is the end time of the associated packet.
      */
     int granule_is_start;
+    /**
+     * Number of expected headers
+     */
+    int nb_header;
 };
 
 struct ogg_stream {
@@ -77,6 +81,7 @@ struct ogg_stream {
     int keyframe_seek;
     int got_start;
     int got_data;   ///< 1 if the stream got some data (non-initial packets), 0 otherwise
+    int nb_header; ///< set to the number of parsed headers
     void *private;
 };
 
diff --git a/libavformat/oggparsecelt.c b/libavformat/oggparsecelt.c
index 053b74b74f..afc4392e2c 100644
--- a/libavformat/oggparsecelt.c
+++ b/libavformat/oggparsecelt.c
@@ -93,4 +93,5 @@ const struct ogg_codec ff_celt_codec = {
     .magic     = "CELT    ",
     .magicsize = 8,
     .header    = celt_header,
+    .nb_header = 2,
 };
diff --git a/libavformat/oggparsedirac.c b/libavformat/oggparsedirac.c
index 2a9d9006e3..73bc495aa8 100644
--- a/libavformat/oggparsedirac.c
+++ b/libavformat/oggparsedirac.c
@@ -104,6 +104,7 @@ const struct ogg_codec ff_dirac_codec = {
     .header = dirac_header,
     .gptopts = dirac_gptopts,
     .granule_is_start = 1,
+    .nb_header = 1,
 };
 
 const struct ogg_codec ff_old_dirac_codec = {
@@ -112,4 +113,5 @@ const struct ogg_codec ff_old_dirac_codec = {
     .header = old_dirac_header,
     .gptopts = old_dirac_gptopts,
     .granule_is_start = 1,
+    .nb_header = 1,
 };
diff --git a/libavformat/oggparseflac.c b/libavformat/oggparseflac.c
index 6edbd85653..3ff594e3c4 100644
--- a/libavformat/oggparseflac.c
+++ b/libavformat/oggparseflac.c
@@ -88,11 +88,13 @@ old_flac_header (AVFormatContext * s, int idx)
 const struct ogg_codec ff_flac_codec = {
     .magic = "\177FLAC",
     .magicsize = 5,
-    .header = flac_header
+    .header = flac_header,
+    .nb_header = 2,
 };
 
 const struct ogg_codec ff_old_flac_codec = {
     .magic = "fLaC",
     .magicsize = 4,
-    .header = old_flac_header
+    .header = old_flac_header,
+    .nb_header = 0,
 };
diff --git a/libavformat/oggparseogm.c b/libavformat/oggparseogm.c
index e60769efea..a3caac0e15 100644
--- a/libavformat/oggparseogm.c
+++ b/libavformat/oggparseogm.c
@@ -171,6 +171,7 @@ const struct ogg_codec ff_ogm_video_codec = {
     .header = ogm_header,
     .packet = ogm_packet,
     .granule_is_start = 1,
+    .nb_header = 2,
 };
 
 const struct ogg_codec ff_ogm_audio_codec = {
@@ -179,6 +180,7 @@ const struct ogg_codec ff_ogm_audio_codec = {
     .header = ogm_header,
     .packet = ogm_packet,
     .granule_is_start = 1,
+    .nb_header = 2,
 };
 
 const struct ogg_codec ff_ogm_text_codec = {
@@ -187,6 +189,7 @@ const struct ogg_codec ff_ogm_text_codec = {
     .header = ogm_header,
     .packet = ogm_packet,
     .granule_is_start = 1,
+    .nb_header = 2,
 };
 
 const struct ogg_codec ff_ogm_old_codec = {
@@ -195,4 +198,5 @@ const struct ogg_codec ff_ogm_old_codec = {
     .header = ogm_dshow_header,
     .packet = ogm_packet,
     .granule_is_start = 1,
+    .nb_header = 1,
 };
diff --git a/libavformat/oggparseskeleton.c b/libavformat/oggparseskeleton.c
index b0f55dd0b2..a9e4fc9ed0 100644
--- a/libavformat/oggparseskeleton.c
+++ b/libavformat/oggparseskeleton.c
@@ -89,4 +89,5 @@ const struct ogg_codec ff_skeleton_codec = {
     .magic = "fishead",
     .magicsize = 8,
     .header = skeleton_header,
+    .nb_header = 0,
 };
diff --git a/libavformat/oggparsespeex.c b/libavformat/oggparsespeex.c
index e4dfec5218..11b50d5905 100644
--- a/libavformat/oggparsespeex.c
+++ b/libavformat/oggparsespeex.c
@@ -122,5 +122,6 @@ const struct ogg_codec ff_speex_codec = {
     .magic = "Speex   ",
     .magicsize = 8,
     .header = speex_header,
-    .packet = speex_packet
+    .packet = speex_packet,
+    .nb_header = 2,
 };
diff --git a/libavformat/oggparsetheora.c b/libavformat/oggparsetheora.c
index 7762c00475..4810357d03 100644
--- a/libavformat/oggparsetheora.c
+++ b/libavformat/oggparsetheora.c
@@ -192,5 +192,6 @@ const struct ogg_codec ff_theora_codec = {
     .magicsize = 7,
     .header = theora_header,
     .packet = theora_packet,
-    .gptopts = theora_gptopts
+    .gptopts = theora_gptopts,
+    .nb_header = 3,
 };
diff --git a/libavformat/oggparsevorbis.c b/libavformat/oggparsevorbis.c
index 38eb4b0b1c..09f5205fbb 100644
--- a/libavformat/oggparsevorbis.c
+++ b/libavformat/oggparsevorbis.c
@@ -367,4 +367,5 @@ const struct ogg_codec ff_vorbis_codec = {
     .magicsize = 7,
     .header = vorbis_header,
     .packet = vorbis_packet,
+    .nb_header = 3,
 };
diff --git a/libavformat/utils.c b/libavformat/utils.c
index a48369fdfb..e5826c1181 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2346,10 +2346,13 @@ static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **option
 {
     const AVCodec *codec;
     int got_picture = 1, ret = 0;
-    AVFrame picture;
+    AVFrame *frame = avcodec_alloc_frame();
     AVSubtitle subtitle;
     AVPacket pkt = *avpkt;
 
+    if (!frame)
+        return AVERROR(ENOMEM);
+
     if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
         AVDictionary *thread_opt = NULL;
 
@@ -2358,7 +2361,8 @@ static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **option
 
         if (!codec) {
             st->info->found_decoder = -1;
-            return -1;
+            ret = -1;
+            goto fail;
         }
 
         /* force thread count to 1 since the h264 decoder will not extract SPS
@@ -2369,14 +2373,16 @@ static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **option
             av_dict_free(&thread_opt);
         if (ret < 0) {
             st->info->found_decoder = -1;
-            return ret;
+            goto fail;
         }
         st->info->found_decoder = 1;
     } else if (!st->info->found_decoder)
         st->info->found_decoder = 1;
 
-    if (st->info->found_decoder < 0)
-        return -1;
+    if (st->info->found_decoder < 0) {
+        ret = -1;
+        goto fail;
+    }
 
     while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
            ret >= 0 &&
@@ -2384,14 +2390,14 @@ static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **option
            !has_decode_delay_been_guessed(st) ||
            (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
         got_picture = 0;
-        avcodec_get_frame_defaults(&picture);
+        avcodec_get_frame_defaults(frame);
         switch(st->codec->codec_type) {
         case AVMEDIA_TYPE_VIDEO:
-            ret = avcodec_decode_video2(st->codec, &picture,
+            ret = avcodec_decode_video2(st->codec, frame,
                                         &got_picture, &pkt);
             break;
         case AVMEDIA_TYPE_AUDIO:
-            ret = avcodec_decode_audio4(st->codec, &picture, &got_picture, &pkt);
+            ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
             break;
         case AVMEDIA_TYPE_SUBTITLE:
             ret = avcodec_decode_subtitle2(st->codec, &subtitle,
@@ -2409,8 +2415,12 @@ static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **option
             ret       = got_picture;
         }
     }
+
     if(!pkt.data && !got_picture)
-        return -1;
+        ret = -1;
+
+fail:
+    avcodec_free_frame(&frame);
     return ret;
 }