1 files changed, 79 insertions, 0 deletions
diff --git a/libav/avcodec.h b/libav/avcodec.h
new file mode 100644
index 0000000000..299f81ab32
--- /dev/null
+++ b/libav/avcodec.h
@@ -0,0 +1,79 @@
+#include "common.h"
+
+enum CodecID {
+    CODEC_ID_NONE, 
+    CODEC_ID_MPEG1VIDEO,
+    CODEC_ID_H263,
+    CODEC_ID_RV10,
+    CODEC_ID_MP2,
+    CODEC_ID_AC3,
+    CODEC_ID_MJPEG,
+};
+
+enum CodecType {
+    CODEC_TYPE_VIDEO,
+    CODEC_TYPE_AUDIO,
+};
+    
+typedef struct AVEncodeContext {
+    int bit_rate;
+    int rate; /* frames per sec or samples per sec */
+
+    /* video only */
+    int width, height;
+    int gop_size; /* 0 = intra only */
+    
+    /* audio only */
+    int channels;
+
+    /* the following data should not be initialized */
+    int frame_size; /* in samples, initialized when calling 'init' */
+    int frame_number; /* audio or video frame number */
+    int key_frame;    /* true if the previous compressed frame was 
+                         a key frame (intra, or seekable) */
+    struct AVEncoder *codec;
+    void *priv_data;
+} AVEncodeContext;
+
+typedef struct AVEncoder {
+    char *name;
+    int type;
+    int id;
+    int priv_data_size;
+    int (*init)(AVEncodeContext *);
+    int (*encode)(AVEncodeContext *, UINT8 *buf, int buf_size, void *data);
+    int (*close)(AVEncodeContext *);
+    struct AVEncoder *next;
+} AVEncoder;
+
+extern AVEncoder ac3_encoder;
+extern AVEncoder mp2_encoder;
+extern AVEncoder mpeg1video_encoder;
+extern AVEncoder h263_encoder;
+extern AVEncoder rv10_encoder;
+extern AVEncoder mjpeg_encoder;
+
+/* resample.c */
+
+typedef struct {
+    /* fractional resampling */
+    UINT32 incr; /* fractional increment */
+    UINT32 frac;
+    int last_sample;
+    /* integer down sample */
+    int iratio;  /* integer divison ratio */
+    int icount, isum;
+    int inv;
+} ReSampleChannelContext;
+
+typedef struct {
+    ReSampleChannelContext channel_ctx[2];
+    float ratio;
+    /* channel convert */
+    int input_channels, output_channels;
+} ReSampleContext;
+
+int audio_resample_init(ReSampleContext *s, 
+                        int output_channels, int input_channels, 
+                        int output_rate, int input_rate);
+int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);