|
- #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);
|
