*: rework avd/frameno handling for cached mode

This brings the !--on-the-fly-encoding mode up to speed.

The cached file header loses the total_frames counter, as the
capture_frameno already represents this.

Dropped frames are detected by simply looking at the difference
between the previous capture_frameno and the current one.  This
simply gets passed to the encoder as a n_frames count so theora
can duplicate the frames as needed.

This was being done manually before by looking at the frameno and
total frames in each header and maintaining separate counts for
"extra frames" "missed frames" etc, and resubmitting entire
frames multiply for encoding dropped frames.

So a chunk of code has been thrown out from rmd_load_cache.c, and
some general cleanups have occurred there as well.

I also needed to add more locking around pdata->avd accesses.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/rmd_encode_image_buffer.h b/src/rmd_encode_image_buffer.h
index e5ca3db..d011e26 100644
--- a/src/rmd_encode_image_buffer.h
+++ b/src/rmd_encode_image_buffer.h
@@ -34,6 +34,7 @@
 * feed a yuv buffer to the theora encoder and submit outcome to
 * the ogg stream.
 * \param pdata ProgData struct containing all program data
+* \param n_frames number of frames to encode from image buffer
 */
 void *rmdEncodeImageBuffer(ProgData *pdata);
 
@@ -44,7 +45,7 @@ void *rmdEncodeImageBuffer(ProgData *pdata);
 * \param pdata ProgData struct containing all program data
 *
 */
-void rmdSyncEncodeImageBuffer(ProgData *pdata);
+void rmdSyncEncodeImageBuffer(ProgData *pdata, unsigned int n_frames);
 
 
 #endif