avidemux: add new index parsing code

Add a new function and datastructure to parse and hold the index entries on a
per stream base. Also avoid doing too much work trying to figure out the
timestamps and durations as we can trivially do that later.

Less information in the entries makes them 2 times smaller and not doing too
much work makes this code about 12 times faster than the regular case.

Hook in the new function alongside the existing function for comparison until
the rest of the code is updated to handle the new index datastructure.

1 files changed, 14 insertions, 0 deletions

diff --git a/gst/avi/gstavidemux.h b/gst/avi/gstavidemux.h
index 95b57d5a..d713fa09 100644
--- a/gst/avi/gstavidemux.h
+++ b/gst/avi/gstavidemux.h
@@ -62,6 +62,14 @@ typedef struct {
   guint32        size;          /* could be read from the chunk (if we don't split) */
 } gst_avi_index_entry;
 
+/* new index entries 24 bytes */
+typedef struct {
+  guint32        flags;
+  guint32        size;    /* bytes of the data */
+  guint64        offset;  /* data offset in file */
+  guint64        total;   /* total bytes before */
+} GstAviIndexEntry;
+
 typedef struct {
   /* index of this streamcontext */
   guint          num;
@@ -90,6 +98,7 @@ typedef struct {
   guint64        total_bytes;
   guint32        total_frames;
   guint32        total_blocks;
+  guint          n_keyframes;
   /* stream length according to index */
   GstClockTime   idx_duration;
   /* stream length according to header */
@@ -104,6 +113,11 @@ typedef struct {
   gboolean       superindex;
   guint64       *indexes;
 
+  /* new indexes */
+  GstAviIndexEntry *index;     /* array with index entries */
+  guint             idx_n;     /* number of entries */
+  guint             idx_max;   /* max allocated size of entries */
+
   GstTagList	*taglist;
 } avi_stream_context;