static void fill_ring_buffer(void *userData){
paTestData *data = (paTestData*)userData;
while (btstack_ring_buffer_bytes_free(&ring_buffer) > BYTES_PER_FRAME){
uint8_t write_data[BYTES_PER_FRAME];
*(int16_t*)&write_data[0] = data->sine[data->left_phase];
*(int16_t*)&write_data[2] = data->sine[data->right_phase];
btstack_ring_buffer_write(&ring_buffer, write_data, BYTES_PER_FRAME);
write_wav_data((int16_t*)write_data, 1, NUM_CHANNELS, SAMPLE_RATE);
data->left_phase += 1;
if (data->left_phase >= TABLE_SIZE){
data->left_phase -= TABLE_SIZE;
}
data->right_phase += 2; /* higher pitch so we can distinguish left and right. */
if (data->right_phase >= TABLE_SIZE){
data->right_phase -= TABLE_SIZE;
}
}
}
int main(int argc, char *argv[])
{
int i, j;
int n;
int channels;
long freq;
long total_size;
long block, num_block;
FILE *fp_adp;
FILE *fp_wav;
XA_BLOCK xa_block;
INT16 pcm_l[28];
INT16 pcm_r[28];
fprintf(stderr, "adp2wav version 0.22 Copyright (C) 1997 Nobuyuki NISHIZAWA\n");
if (argc != 3)
{
fprintf(stderr, "Usage: adp2wav <input.adp> <output.wav>\n");
return 255;
}
fp_adp = fopen(argv[1], "rb");
fp_wav = fopen(argv[2], "wb");
if (fp_adp == NULL || fp_wav == NULL)
{
fprintf(stderr, "Error: cannot open file.\n");
return 1;
}
num_block = read_aiff_header(fp_adp, &freq, &channels);
//fseek(fp_adp, 0x36, SEEK_SET);
fseek(fp_wav, 0x2c, SEEK_SET);
total_size = 0;
pcm_l[26] = 0;
pcm_l[27] = 0;
pcm_r[26] = 0;
pcm_r[27] = 0;
block = 0;
while (fread(&xa_block, sizeof(xa_block), 1, fp_adp) == 1 &&
block < num_block)
{
for (i = 0; i < 18; i++)
{
if (channels == 2)
{
for (j = 0; j < 8; j += 2)
{
n = decode_adpcm(&xa_block.adpcm[i], pcm_l, j,
pcm_l[27], pcm_l[26]);
decode_adpcm(&xa_block.adpcm[i], pcm_r, j + 1,
pcm_r[27], pcm_r[26]);
total_size += write_wav_data(fp_wav, pcm_l, pcm_r, n);
}
}
else
{
for (j = 0; j < 8; j++)
{
n = decode_adpcm(&xa_block.adpcm[i], pcm_l, j,
pcm_l[27], pcm_l[26]);
total_size += write_wav_data(fp_wav, pcm_l, NULL, n);
}
}
}
}
write_wav_header(fp_wav, freq, channels, total_size);
fclose(fp_wav);
fclose(fp_adp);
return 0;
}
