mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-04 11:26:09 +00:00
107 lines
4.0 KiB
Diff
107 lines
4.0 KiB
Diff
diff --git a/src/liboggplay/oggplay_callback.c b/src/liboggplay/oggplay_callback.c
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index f3e2339..39380e7 100644
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--- a/src/liboggplay/oggplay_callback.c
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+++ b/src/liboggplay/oggplay_callback.c
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@@ -109,6 +109,15 @@ oggplay_callback_theora (OGGZ * oggz, ogg_packet * op, long serialno,
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int musec;
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#endif
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+ if ( (granulepos > 0) && (common->last_granulepos > granulepos)) {
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+ /*
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+ * the granule position is not monotonically increasing,
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+ * something wrong with the page!
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+ * skipping this page.....
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+ */
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+ return 0;
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+ }
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+
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/*
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* always decode headers
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*/
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@@ -174,10 +183,19 @@ oggplay_callback_theora (OGGZ * oggz, ogg_packet * op, long serialno,
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#endif
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if (granulepos != -1) {
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+ /*
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+ * save last granule position in order to be able to validate
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+ * that it's monotonically increasing
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+ */
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+ common->last_granulepos = granulepos;
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+
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+ /* calculate the frame number */
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granuleshift = oggz_get_granuleshift(oggz, serialno);
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frame = (granulepos >> granuleshift);
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frame += (granulepos & ((1 << granuleshift) - 1));
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- common->current_loc = frame * common->granuleperiod;
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+
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+ /* calculate the current location in the stream */
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+ common->current_loc = frame * common->granuleperiod;
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} else {
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common->current_loc = -1;
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}
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diff --git a/src/liboggplay/oggplay_private.h b/src/liboggplay/oggplay_private.h
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index fb73f1d..1455c68 100644
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--- a/src/liboggplay/oggplay_private.h
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+++ b/src/liboggplay/oggplay_private.h
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@@ -142,22 +142,22 @@ struct _OggPlayCallbackInfo {
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* track
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*/
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typedef struct {
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- long serialno;
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- int content_type;
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- const char * content_type_name;
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- OggPlayDataType decoded_type;
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- ogg_int64_t granuleperiod;
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- ogg_int64_t last_granulepos;
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- ogg_int64_t offset;
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- ogg_int64_t current_loc;
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- int active;
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- ogg_int64_t final_granulepos;
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- struct _OggPlay * player;
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- OggPlayDataHeader * data_list;
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- OggPlayDataHeader * end_of_data_list;
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- OggPlayDataHeader * untimed_data_list;
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- OggPlayStreamInfo stream_info;
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- int preroll;
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+ long serialno; /**< identifies the logical bit stream */
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+ int content_type;
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+ const char * content_type_name;
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+ OggPlayDataType decoded_type; /**< type of the track @see OggPlayDataType */
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+ ogg_int64_t granuleperiod;
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+ ogg_int64_t last_granulepos; /**< last seen granule position */
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+ ogg_int64_t offset; /**< */
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+ ogg_int64_t current_loc; /**< current location in the stream (in ) */
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+ int active; /**< indicates whether the track is active or not */
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+ ogg_int64_t final_granulepos; /**< */
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+ struct _OggPlay * player; /**< reference to the OggPlay handle */
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+ OggPlayDataHeader * data_list;
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+ OggPlayDataHeader * end_of_data_list;
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+ OggPlayDataHeader * untimed_data_list;
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+ OggPlayStreamInfo stream_info; /**< @see OggPlayStreamInfo */
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+ int preroll; /**< num. of past content packets to take into account when decoding the current Ogg page */
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} OggPlayDecode;
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typedef struct {
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@@ -190,6 +190,9 @@ typedef struct {
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int granuleshift;
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} OggPlayCmmlDecode;
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+/**
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+ * OggPlaySkeletonDecode
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+ */
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typedef struct {
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OggPlayDecode decoder;
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ogg_int64_t presentation_time;
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diff --git a/src/liboggplay/oggplay_seek.c b/src/liboggplay/oggplay_seek.c
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index e74c136..ef150b8 100644
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--- a/src/liboggplay/oggplay_seek.c
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+++ b/src/liboggplay/oggplay_seek.c
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@@ -133,6 +133,7 @@ oggplay_seek_cleanup(OggPlay* me, ogg_int64_t milliseconds)
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track->data_list = track->end_of_data_list = NULL;
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track->untimed_data_list = NULL;
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track->current_loc = -1;
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+ track->last_granulepos = -1;
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track->stream_info = OGGPLAY_STREAM_JUST_SEEKED;
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}
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