parse 'stps' atom to set keyframe, partial sync sample for mpeg-2 open gop

[frescor/ffmpeg.git] / libavformat / isom.h

diff --git a/libavformat/isom.h b/libavformat/isom.h
index 2cad5b8b6847107ee84defd97ec44ee2d8fed91c..f7831c44057b83d3a8a5d396e349c1efbdf22e07 100644 (file)
--- a/libavformat/isom.h
+++ b/libavformat/isom.h
@@ -24,7 +24,9 @@
 #ifndef AVFORMAT_ISOM_H
 #define AVFORMAT_ISOM_H
 
+#include "avio.h"
 #include "riff.h"
+#include "dv.h"
 
 /* isom.c */
 extern const AVCodecTag ff_mp4_obj_type[];
@@ -35,9 +37,105 @@ extern const AVCodecTag ff_codec_movsubtitle_tags[];
 int ff_mov_iso639_to_lang(const char *lang, int mp4);
 int ff_mov_lang_to_iso639(unsigned code, char *to);
 
+/* the QuickTime file format is quite convoluted...
+ * it has lots of index tables, each indexing something in another one...
+ * Here we just use what is needed to read the chunks
+ */
+
 typedef struct {
     int count;
     int duration;
 } MOVStts;
 
+typedef struct {
+    int first;
+    int count;
+    int id;
+} MOVStsc;
+
+typedef struct {
+    uint32_t type;
+    char *path;
+} MOVDref;
+
+typedef struct {
+    uint32_t type;
+    int64_t offset;
+    int64_t size; /* total size (excluding the size and type fields) */
+} MOVAtom;
+
+struct MOVParseTableEntry;
+
+typedef struct {
+    unsigned track_id;
+    uint64_t base_data_offset;
+    uint64_t moof_offset;
+    unsigned stsd_id;
+    unsigned duration;
+    unsigned size;
+    unsigned flags;
+} MOVFragment;
+
+typedef struct {
+    unsigned track_id;
+    unsigned stsd_id;
+    unsigned duration;
+    unsigned size;
+    unsigned flags;
+} MOVTrackExt;
+
+typedef struct MOVStreamContext {
+    ByteIOContext *pb;
+    int ffindex;          ///< AVStream index
+    int next_chunk;
+    unsigned int chunk_count;
+    int64_t *chunk_offsets;
+    unsigned int stts_count;
+    MOVStts *stts_data;
+    unsigned int ctts_count;
+    MOVStts *ctts_data;
+    unsigned int stsc_count;
+    MOVStsc *stsc_data;
+    unsigned int stps_count;
+    unsigned *stps_data;  ///< partial sync sample for mpeg-2 open gop
+    int ctts_index;
+    int ctts_sample;
+    unsigned int sample_size;
+    unsigned int sample_count;
+    int *sample_sizes;
+    unsigned int keyframe_count;
+    int *keyframes;
+    int time_scale;
+    int time_rate;
+    int time_offset;      ///< time offset of the first edit list entry
+    int current_sample;
+    unsigned int bytes_per_frame;
+    unsigned int samples_per_frame;
+    int dv_audio_container;
+    int pseudo_stream_id; ///< -1 means demux all ids
+    int16_t audio_cid;    ///< stsd audio compression id
+    unsigned drefs_count;
+    MOVDref *drefs;
+    int dref_id;
+    int wrong_dts;        ///< dts are wrong due to huge ctts offset (iMovie files)
+    int width;            ///< tkhd width
+    int height;           ///< tkhd height
+    int dts_shift;        ///< dts shift when ctts is negative
+} MOVStreamContext;
+
+typedef struct MOVContext {
+    AVFormatContext *fc;
+    int time_scale;
+    int64_t duration;     ///< duration of the longest track
+    int found_moov;       ///< 'moov' atom has been found
+    int found_mdat;       ///< 'mdat' atom has been found
+    DVDemuxContext *dv_demux;
+    AVFormatContext *dv_fctx;
+    int isom;             ///< 1 if file is ISO Media (mp4/3gp)
+    MOVFragment fragment; ///< current fragment in moof atom
+    MOVTrackExt *trex_data;
+    unsigned trex_count;
+    int itunes_metadata;  ///< metadata are itunes style
+} MOVContext;
+
 #endif /* AVFORMAT_ISOM_H */