mp3dec: read the initial/trailing padding from the LAME tag

[ffmpeg] / libavformat / oggdec.h

diff --git a/libavformat/oggdec.h b/libavformat/oggdec.h
index 964c044f6530f98effbe2bc45a8dbb3a63b357cd..807ac4a3164f4f11b2a525f464a14f5d397d9515 100644 (file)
--- a/libavformat/oggdec.h
+++ b/libavformat/oggdec.h
@@ -22,67 +22,141 @@
     DEALINGS IN THE SOFTWARE.
 **/
 
-#ifndef FFMPEG_OGGDEC_H
-#define FFMPEG_OGGDEC_H
+#ifndef AVFORMAT_OGGDEC_H
+#define AVFORMAT_OGGDEC_H
 
 #include "avformat.h"
+#include "metadata.h"
 
-typedef struct ogg_codec {
-    int8_t *magic;
+struct ogg_codec {
+    const int8_t *magic;
     uint8_t magicsize;
-    int8_t *name;
+    const int8_t *name;
+    /**
+     * Attempt to process a packet as a header
+     * @return 1 if the packet was a valid header,
+     *         0 if the packet was not a header (was a data packet)
+     *         -1 if an error occurred or for unsupported stream
+     */
     int (*header)(AVFormatContext *, int);
     int (*packet)(AVFormatContext *, int);
-    uint64_t (*gptopts)(AVFormatContext *, int, uint64_t);
-} ogg_codec_t;
+    /**
+     * Translate a granule into a timestamp.
+     * Will set dts if non-null and known.
+     * @return pts
+     */
+    uint64_t (*gptopts)(AVFormatContext *, int, uint64_t, int64_t *dts);
+    /**
+     * 1 if granule is the start time of the associated packet.
+     * 0 if granule is the end time of the associated packet.
+     */
+    int granule_is_start;
+    /**
+     * Number of expected headers
+     */
+    int nb_header;
+    void (*cleanup)(AVFormatContext *s, int idx);
+};
 
-typedef struct ogg_stream {
+struct ogg_stream {
     uint8_t *buf;
     unsigned int bufsize;
     unsigned int bufpos;
     unsigned int pstart;
     unsigned int psize;
     unsigned int pflags;
+    unsigned int pduration;
     uint32_t serial;
-    uint32_t seq;
-    uint64_t granule, lastgp;
+    uint64_t granule;
+    uint64_t start_granule;
+    int64_t lastpts;
+    int64_t lastdts;
+    int64_t sync_pos;   ///< file offset of the first page needed to reconstruct the current packet
+    int64_t page_pos;   ///< file offset of the current page
     int flags;
-    ogg_codec_t *codec;
+    const struct ogg_codec *codec;
     int header;
     int nsegs, segp;
     uint8_t segments[255];
+    int incomplete; ///< whether we're expecting a continuation in the next page
+    int page_end;   ///< current packet is the last one completed in the page
+    int keyframe_seek;
+    int nb_header; ///< set to the number of parsed headers
     void *private;
-} ogg_stream_t;
+};
 
-typedef struct ogg_state {
+struct ogg_state {
     uint64_t pos;
     int curidx;
     struct ogg_state *next;
     int nstreams;
-    ogg_stream_t streams[1];
-} ogg_state_t;
+    struct ogg_stream streams[1];
+};
 
-typedef struct ogg {
-    ogg_stream_t *streams;
+struct ogg {
+    struct ogg_stream *streams;
     int nstreams;
     int headers;
     int curidx;
-    uint64_t size;
-    ogg_state_t *state;
-} ogg_t;
+    struct ogg_state *state;
+};
 
 #define OGG_FLAG_CONT 1
 #define OGG_FLAG_BOS  2
 #define OGG_FLAG_EOS  4
 
-extern ogg_codec_t vorbis_codec;
-extern ogg_codec_t theora_codec;
-extern ogg_codec_t flac_codec;
-extern ogg_codec_t old_flac_codec;
-extern ogg_codec_t ogm_video_codec;
-extern ogg_codec_t ogm_audio_codec;
-extern ogg_codec_t ogm_old_codec;
+#define OGG_NOGRANULE_VALUE -1ull
 
-extern int vorbis_comment(AVFormatContext *ms, uint8_t *buf, int size);
+extern const struct ogg_codec ff_celt_codec;
+extern const struct ogg_codec ff_dirac_codec;
+extern const struct ogg_codec ff_flac_codec;
+extern const struct ogg_codec ff_ogm_audio_codec;
+extern const struct ogg_codec ff_ogm_old_codec;
+extern const struct ogg_codec ff_ogm_text_codec;
+extern const struct ogg_codec ff_ogm_video_codec;
+extern const struct ogg_codec ff_old_dirac_codec;
+extern const struct ogg_codec ff_old_flac_codec;
+extern const struct ogg_codec ff_opus_codec;
+extern const struct ogg_codec ff_skeleton_codec;
+extern const struct ogg_codec ff_speex_codec;
+extern const struct ogg_codec ff_theora_codec;
+extern const struct ogg_codec ff_vorbis_codec;
+extern const struct ogg_codec ff_vp8_codec;
 
-#endif /* FFMPEG_OGGDEC_H */
+int ff_vorbis_comment(AVFormatContext *ms, AVDictionary **m,
+                      const uint8_t *buf, int size, int parse_picture);
+
+int ff_vorbis_stream_comment(AVFormatContext *as, AVStream *st,
+                             const uint8_t *buf, int size);
+
+static inline int
+ogg_find_stream (struct ogg * ogg, int serial)
+{
+    int i;
+
+    for (i = 0; i < ogg->nstreams; i++)
+        if (ogg->streams[i].serial == serial)
+            return i;
+
+    return -1;
+}
+
+static inline uint64_t
+ogg_gptopts (AVFormatContext * s, int i, uint64_t gp, int64_t *dts)
+{
+    struct ogg *ogg = s->priv_data;
+    struct ogg_stream *os = ogg->streams + i;
+    uint64_t pts = AV_NOPTS_VALUE;
+
+    if(os->codec && os->codec->gptopts){
+        pts = os->codec->gptopts(s, i, gp, dts);
+    } else {
+        pts = gp;
+        if (dts)
+            *dts = pts;
+    }
+
+    return pts;
+}
+
+#endif /* AVFORMAT_OGGDEC_H */