/* Sound Functions */
ga_Sound* ga_sound_create(ga_Memory* in_memory, ga_Format* in_format)
{
ga_Sound* ret = gcX_ops->allocFunc(sizeof(ga_Sound));
ret->numSamples = ga_memory_size(in_memory) / ga_format_sampleSize(in_format);
memcpy(&ret->format, in_format, sizeof(ga_Format));
ga_memory_acquire(in_memory);
ret->memory = in_memory;
ret->refMutex = gc_mutex_create();
ret->refCount = 1;
return (ga_Sound*)ret;
}
gc_int32 gauX_data_source_memory_seek(void* in_context, gc_int32 in_offset, gc_int32 in_origin)
{
gau_DataSourceMemoryContext* ctx = (gau_DataSourceMemoryContext*)in_context;
gc_int32 dataSize = ga_memory_size(ctx->memory);
gc_mutex_lock(ctx->memMutex);
switch(in_origin)
{
case GA_SEEK_ORIGIN_SET: ctx->pos = in_offset; break;
case GA_SEEK_ORIGIN_CUR: ctx->pos += in_offset; break;
case GA_SEEK_ORIGIN_END: ctx->pos = dataSize - in_offset; break;
}
ctx->pos = ctx->pos < 0 ? 0 : ctx->pos > dataSize ? dataSize : ctx->pos;
gc_mutex_unlock(ctx->memMutex);
return 0;
}
gc_int32 gauX_data_source_memory_read(void* in_context, void* in_dst, gc_int32 in_size, gc_int32 in_count)
{
gau_DataSourceMemoryContext* ctx = (gau_DataSourceMemoryContext*)in_context;
gc_int32 ret = 0;
gc_int32 dataSize = ga_memory_size(ctx->memory);
gc_int32 toRead = in_size * in_count;
gc_int32 remaining;
gc_mutex_lock(ctx->memMutex);
remaining = dataSize - ctx->pos;
toRead = toRead < remaining ? toRead : remaining;
toRead = toRead - (toRead % in_size);
if(toRead)
{
memcpy(in_dst, (char*)ga_memory_data(ctx->memory) + ctx->pos, toRead);
ctx->pos += toRead;
ret = toRead / in_size;
}
gc_mutex_unlock(ctx->memMutex);
return ret;
}
gc_int32 ga_sound_numSamples(ga_Sound* in_sound)
{
return ga_memory_size(in_sound->memory) / ga_format_sampleSize(&in_sound->format);
}
gc_int32 ga_sound_size(ga_Sound* in_sound)
{
return ga_memory_size(in_sound->memory);
}
