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swr: start doxycommenting the API.

This commit is contained in:
Clément Bœsch 2011-11-16 20:28:10 +01:00
parent a768b9d825
commit 4c0bad513a
1 changed files with 41 additions and 34 deletions
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75
libswresample/swresample_internal.h
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@ -24,50 +24,56 @@
#include "swresample.h"
typedef struct AudioData{
uint8_t *ch[SWR_CH_MAX];
uint8_t *data;
int ch_count;
int bps;
int count;
int planar;
uint8_t *ch[SWR_CH_MAX]; ///< samples buffer per channel
uint8_t *data; ///< samples buffer
int ch_count; ///< number of channels
int bps; ///< bytes per sample
int count; ///< number of samples
int planar; ///< 1 if planar audio, 0 otherwise
} AudioData;
typedef struct SwrContext { //FIXME find unused fields
const AVClass *av_class;
int log_level_offset;
void *log_ctx;
enum AVSampleFormat in_sample_fmt;
enum AVSampleFormat int_sample_fmt; ///<AV_SAMPLE_FMT_FLT OR AV_SAMPLE_FMT_S16
enum AVSampleFormat out_sample_fmt;
int64_t in_ch_layout;
int64_t out_ch_layout;
int in_sample_rate;
int out_sample_rate;
int flags;
float slev, clev, rematrix_volume;
const int *channel_map; ///< channel index (or -1 if muted channel) map
int used_ch_count; ///< number of used channels (mapped channel count if channel_map, otherwise in.ch_count)
typedef struct SwrContext {
const AVClass *av_class; ///< AVClass used for AVOption and av_log()
int log_level_offset; ///< logging level offset
void *log_ctx; ///< parent logging context
enum AVSampleFormat in_sample_fmt; ///< input sample format
enum AVSampleFormat int_sample_fmt; ///< internal sample format (AV_SAMPLE_FMT_FLT or AV_SAMPLE_FMT_S16)
enum AVSampleFormat out_sample_fmt; ///< output sample format
int64_t in_ch_layout; ///< input channel layout
int64_t out_ch_layout; ///< output channel layout
int in_sample_rate; ///< input sample rate
int out_sample_rate; ///< output sample rate
int flags; ///< miscellaneous flags such as SWR_FLAG_RESAMPLE
float slev; ///< surround mixing level, XXX: unused
float clev; ///< center mixing level
float rematrix_volume; ///< rematrixing volume coefficient
const int *channel_map; ///< channel index (or -1 if muted channel) map
int used_ch_count; ///< number of used input channels (mapped channel count if channel_map, otherwise in.ch_count)
//below are private
int int_bps;
int resample_first;
int rematrix; ///< flag to indicate if rematrixing is used
int int_bps; ///< internal bytes per sample
int resample_first; ///< 1 if resampling must come first, 0 if rematrixing
int rematrix; ///< flag to indicate if rematrixing is needed (basically if input and output layouts mismatch)
AudioData in, postin, midbuf, preout, out, in_buffer;
int in_buffer_index;
int in_buffer_count;
int resample_in_constraint;
AudioData in; ///< input audio data
AudioData postin; ///< post-input audio data: used for rematrix/resample
AudioData midbuf; ///< intermediate audio data (postin/preout)
AudioData preout; ///< pre-output audio data: used for rematrix/resample
AudioData out; ///< converted output audio data
AudioData in_buffer; ///< cached audio data (convert and resample purpose)
int in_buffer_index; ///< cached buffer position
int in_buffer_count; ///< cached buffer length
int resample_in_constraint; ///< 1 if the input end was reach before the output end, 0 otherwise
struct AudioConvert *in_convert;
struct AudioConvert *out_convert;
struct AudioConvert *full_convert;
struct ResampleContext *resample;
struct AudioConvert *in_convert; ///< input conversion context
struct AudioConvert *out_convert; ///< output conversion context
struct AudioConvert *full_convert; ///< full conversion context (single conversion for input and output)
struct ResampleContext *resample; ///< resampling context
float matrix[SWR_CH_MAX][SWR_CH_MAX];
int32_t matrix32[SWR_CH_MAX][SWR_CH_MAX];
uint8_t matrix_ch[SWR_CH_MAX][SWR_CH_MAX+1];
//TODO callbacks for asm optims
/* TODO: callbacks for ASM optimizations */
}SwrContext;
struct ResampleContext *swri_resample_init(struct ResampleContext *, int out_rate, int in_rate, int filter_size, int phase_shift, int linear, double cutoff);
@ -78,4 +84,5 @@ int swri_resample(struct ResampleContext *c, short *dst, const short *src, int *
int swri_rematrix_init(SwrContext *s);
int swri_rematrix(SwrContext *s, AudioData *out, AudioData *in, int len, int mustcopy);
#endif