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