stb_vorbis_decode_memory() [1/2]

int32_t fl::third_party::vorbis::stb_vorbis_decode_memory	(	const uint8 *	mem,
		int32_t	len,
		int32_t *	channels,
		int32_t *	sample_rate,
		short **	output )

Definition at line 5151 of file stb_vorbis.cpp.hpp.

{
   int32_t data_len, offset, total, limit, error;
   short *data;
   stb_vorbis *v = stb_vorbis_open_memory(mem, len, &error, nullptr);
   if (v == nullptr) return -1;
   limit = v->channels * 4096;
   *channels = v->channels;
   if (sample_rate)
      *sample_rate = v->sample_rate;
   offset = data_len = 0;
   total = limit;
   data = (short *) fl::malloc(total * sizeof(*data));
   if (data == nullptr) {
      stb_vorbis_close(v);
      return -2;
   }
   for (;;) {
      int32_t n = stb_vorbis_get_frame_short_interleaved(v, v->channels, data+offset, total-offset);
      if (n == 0) break;
      data_len += n;
      offset += n * v->channels;
      if (offset + limit > total) {
         short *data2;
         total *= 2;
         data2 = (short *) fl::realloc(data, total * sizeof(*data));
         if (data2 == nullptr) {
            fl::free(data);
            stb_vorbis_close(v);
            return -2;
         }
         data = data2;
      }
   }
   *output = data;
   stb_vorbis_close(v);
   return data_len;
}

References fl::third_party::vorbis::stb_vorbis::channels, error(), fl::FL_NO_EXCEPT, fl::free(), fl::malloc(), offset(), fl::realloc(), fl::third_party::vorbis::stb_vorbis::sample_rate, stb_vorbis_close(), stb_vorbis_get_frame_short_interleaved(), and stb_vorbis_open_memory().

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