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#ifndef foosamplehfoo
#define foosamplehfoo
#include <inttypes.h>
#include "memblock.h"
enum sample_format {
SAMPLE_U8,
SAMPLE_ALAW,
SAMPLE_ULAW,
SAMPLE_S16LE,
SAMPLE_S16BE,
SAMPLE_FLOAT32
};
#define SAMPLE_S16NE SAMPLE_S16LE
struct sample_spec {
enum sample_format format;
uint32_t rate;
uint32_t channels;
};
#define DEFAULT_SAMPLE_SPEC default_sample_spec
extern struct sample_spec default_sample_spec;
struct memblock *silence_memblock(struct memblock* b, struct sample_spec *spec);
void silence_memchunk(struct memchunk *c, struct sample_spec *spec);
void silence_memory(void *p, size_t length, struct sample_spec *spec);
struct mix_info {
struct memchunk chunk;
uint8_t volume;
void *userdata;
};
size_t mix_chunks(struct mix_info channels[], unsigned nchannels, void *data, size_t length, struct sample_spec *spec, uint8_t volume);
size_t bytes_per_second(struct sample_spec *spec);
size_t sample_size(struct sample_spec *spec);
uint32_t samples_usec(size_t length, struct sample_spec *spec);
#endif
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