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authorKostya Shishkov <kostya.shishkov@gmail.com>2012-06-06 20:13:07 +0200
committerKostya Shishkov <kostya.shishkov@gmail.com>2012-06-09 08:38:31 +0200
commite1a3fa5d3ae63058fa2cf6dfcfaad50a8f61a034 (patch)
tree0f934d727344568fca072aa61bc6abd71009872c /libavcodec
parent03e098e7a03706ec4491f79a8aa28d498c487a9a (diff)
downloadffmpeg-e1a3fa5d3ae63058fa2cf6dfcfaad50a8f61a034.tar.gz
indeo4: handle frame type 1 properly
It turns out that this frame type is actually intra and should be used as a reference for interframes too.
Diffstat (limited to 'libavcodec')
-rw-r--r--libavcodec/indeo4.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/libavcodec/indeo4.c b/libavcodec/indeo4.c
index c8ee0becbd..b4e14f625d 100644
--- a/libavcodec/indeo4.c
+++ b/libavcodec/indeo4.c
@@ -40,7 +40,7 @@
*/
enum {
FRAMETYPE_INTRA = 0,
- FRAMETYPE_BIDIR1 = 1, ///< bidirectional frame
+ FRAMETYPE_INTRA1 = 1, ///< intra frame with slightly different bitstream coding
FRAMETYPE_INTER = 2, ///< non-droppable P-frame
FRAMETYPE_BIDIR = 3, ///< bidirectional frame
FRAMETYPE_INTER_NOREF = 4, ///< droppable P-frame
@@ -133,8 +133,7 @@ static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
}
#if IVI4_STREAM_ANALYSER
- if ( ctx->frame_type == FRAMETYPE_BIDIR1
- || ctx->frame_type == FRAMETYPE_BIDIR)
+ if (ctx->frame_type == FRAMETYPE_BIDIR)
ctx->has_b_frames = 1;
#endif
@@ -471,7 +470,8 @@ static int decode_mb_info(IVI45DecContext *ctx, IVIBandDesc *band,
} else {
if (band->inherit_mv) {
mb->type = ref_mb->type; /* copy mb_type from corresponding reference mb */
- } else if (ctx->frame_type == FRAMETYPE_INTRA) {
+ } else if (ctx->frame_type == FRAMETYPE_INTRA ||
+ ctx->frame_type == FRAMETYPE_INTRA1) {
mb->type = 0; /* mb_type is always INTRA for intra-frames */
} else {
mb->type = get_bits(&ctx->gb, mb_type_bits);
@@ -539,6 +539,7 @@ static void switch_buffers(IVI45DecContext *ctx)
{
switch (ctx->prev_frame_type) {
case FRAMETYPE_INTRA:
+ case FRAMETYPE_INTRA1:
case FRAMETYPE_INTER:
ctx->buf_switch ^= 1;
ctx->dst_buf = ctx->buf_switch;
@@ -550,6 +551,7 @@ static void switch_buffers(IVI45DecContext *ctx)
switch (ctx->frame_type) {
case FRAMETYPE_INTRA:
+ case FRAMETYPE_INTRA1:
ctx->buf_switch = 0;
/* FALLTHROUGH */
case FRAMETYPE_INTER: