1 files changed, 12 insertions, 17 deletions

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 9efb95ee0a..83514e676d 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -17,7 +17,7 @@ extern "C" {
 
 #define FFMPEG_VERSION_INT     0x000409
 #define FFMPEG_VERSION         "0.4.9-pre1"
-#define LIBAVCODEC_BUILD       4753
+#define LIBAVCODEC_BUILD       4754
 
 #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
 #define LIBAVCODEC_VERSION     FFMPEG_VERSION
@@ -28,6 +28,7 @@ extern "C" {
 
 #define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
 #define AV_TIME_BASE 1000000
+#define AV_TIME_BASE_Q (AVRational){1, AV_TIME_BASE}
 
 enum CodecID {
     CODEC_ID_NONE, 
@@ -442,8 +443,8 @@ typedef struct AVPanScan{
     int pict_type;\
 \
     /**\
-     * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
-     * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
+     * presentation timestamp in time_base units (time when frame should be shown to user)\
+     * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
      * - encoding: MUST be set by user\
      * - decoding: set by lavc\
      */\
@@ -721,13 +722,11 @@ typedef struct AVCodecContext {
     
     /* video only */
     /**
-     * frames per sec multiplied by frame_rate_base.
-     * for variable fps this is the precission, so if the timestamps 
-     * can be specified in msec precssion then this is 1000*frame_rate_base
+     * time base in which the timestamps are specified.
      * - encoding: MUST be set by user
-     * - decoding: set by lavc. 0 or the frame_rate if available
+     * - decoding: set by lavc.
      */
-    int frame_rate;
+    AVRational time_base;
     
     /**
      * picture width / height.
@@ -1421,15 +1420,6 @@ typedef struct AVCodecContext {
     int me_range;
 
     /**
-     * frame_rate_base.
-     * for variable fps this is 1
-     * - encoding: set by user.
-     * - decoding: set by lavc.
-     * @todo move this after frame_rate
-     */
-
-    int frame_rate_base;
-    /**
      * intra quantizer bias.
      * - encoding: set by user.
      * - decoding: unused
@@ -2244,6 +2234,11 @@ int64_t av_rescale(int64_t a, int64_t b, int64_t c);
  */
 int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
 
+/**
+ * rescale a 64bit integer by 2 rational numbers.
+ */
+int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq);
+
 /* frame parsing */
 typedef struct AVCodecParserContext {
     void *priv_data;