static void pcm_play_demo(void)
{
struct deca_feature_config deca_config;
struct snd_feature_config snd_config;
UINT32 i, j;
struct pcm_output pcm;
INT32 *p_pcm_sp;
g_decv_dev = dev_get_by_id(HLD_DEV_TYPE_DECV, 0);
g_deca_dev = dev_get_by_id(HLD_DEV_TYPE_DECA, 0);
if (RET_SUCCESS != deca_open(g_deca_dev, 0, 0, 0, 0, 0))
{
PRINTF("deca_open failed!!\n");
ASSERT(0);
}
if (RET_SUCCESS != snd_open(g_snd_dev))
{
PRINTF("snd_open failed!!\n");
ASSERT(0);
}
MEMSET(&pcm, 0, sizeof(struct pcm_output));
pcm.ch_num = 2;
pcm.ch_mod = DUAL_CHANNEL;
pcm.ch_left = pcm_left_ch;
pcm.ch_right = pcm_right_ch;
pcm.samp_num = 1152;
snd_set_spdif_type(g_snd_dev, SND_OUT_SPDIF_PCM);
snd_set_volume(g_snd_dev, SND_SUB_OUT, 100);
snd_set_duplicate(g_snd_dev, SND_DUP_NONE);
/*assumes PCM data is in address __MM_AUDIO_PATTERN_ADDR, 400*4608 samples,
Preset PCM sample rate is 48000, each sample occupy 1 double word (32 bits)*/
while (1)
{
p_pcm_sp = (INT32 *)__MM_AUDIO_PATTERN_ADDR;
for (i = 0;i < PCM_FRM_NUM;i++)
{
for (j = 0;j < pcm.samp_num;j++)
{
/*for dual channel mode, 2 channels should have different samples,
herel fills the same samples to 2 channels for demo.
If only have 1 channel PCM, you can only fill 1 channel (left or right), but you should call
snd_set_duplicate(g_snd_dev, SND_DUP_L); or snd_set_duplicate(g_snd_dev, SND_DUP_R);
before play.*/
pcm_left_ch[j] = (*p_pcm_sp) << 5;
pcm_right_ch[j] = (*p_pcm_sp) << 5;
p_pcm_sp++;
}
libc_demo_pcm_output(&pcm);
}
}
}
void process_ogg_pcm(struct snd_device * sound_dev, int bytes_readed, int *processed_pcm)
{
INT16 *out_buf_temp;
UINT32 out_samp_num;
UINT32 i;
struct pcm_output pcm;
int bytes_left = 0;
//we process sample rate for martching our sound device.
//note : the pcm code may not integrity, I don't know it works or not, under testing
out_buf_temp = (INT16*)ogg_file->pcm_out_buff;
out_samp_num = (bytes_readed /2) / ogg_file->channel;
if(out_samp_num > ON_PCM_BUFF_LEN)
return;
if(g_pcm_sample_num + out_samp_num < ON_PCM_BUFF_LEN)
{
MEMCPY((char*)(g_temp_pcm_buff+g_pcm_current_using),out_buf_temp,bytes_readed);
g_pcm_current_using += bytes_readed;
g_pcm_sample_num += out_samp_num;
return;
}
else
{
MEMCPY((char*)(g_temp_pcm_buff+g_pcm_current_using),out_buf_temp,(ON_PCM_BUFF_LEN-g_pcm_sample_num)*ogg_file->channel*2);
bytes_left = bytes_readed - (ON_PCM_BUFF_LEN-g_pcm_sample_num)*ogg_file->channel*2;
}
g_pcm_current_using = 0;
g_pcm_sample_num = 0;
out_samp_num = ON_PCM_BUFF_LEN;
pcm.samp_num = ON_PCM_BUFF_LEN;
out_buf_temp = (INT16 *)g_temp_pcm_buff;
//pcm.samp_num = out_samp_num;
pcm.ch_num = (ogg_file->channel > 2) ? 2: ogg_file->channel;
pcm.ch_left = (UINT32 *)processed_pcm;
pcm.ch_right = (UINT32 *)(processed_pcm + 1152);
pcm.raw_data_start = NULL;
pcm.raw_data_len = 0;
if(24000==ogg_file->samplerate||16000==ogg_file->samplerate||22050==ogg_file->samplerate)
{
ogg_dup_samplerate = ogg_file->samplerate<<1;
if(out_samp_num <= 576)
{
if(pcm.ch_num == 1) //(SINGLE_CHANNEL)
{
snd_set_duplicate(sound_dev, SND_DUP_L);
for(i=0; i<out_samp_num; i++)
{
*(processed_pcm+(i*2)) = (INT32)out_buf_temp[i] << 8;
*(processed_pcm+(i*2 + 1)) = (INT32)out_buf_temp[i] << 8;
}
}
else
{
snd_set_duplicate(sound_dev, SND_DUP_NONE);
for(i=0; i<out_samp_num; i++)
{
*(processed_pcm+(i*2)) = (INT32)out_buf_temp[i*ogg_file->channel] << 8;
*(processed_pcm+(i*2 + 1)) = (INT32)out_buf_temp[i*ogg_file->channel] << 8;
*(processed_pcm + 1152 + (i*2)) = (INT32)out_buf_temp[i*ogg_file->channel+1] << 8;
*(processed_pcm + 1152 + (i*2 + 1))= (INT32)out_buf_temp[i*ogg_file->channel+1] << 8;
}
}
pcm.samp_num = out_samp_num<<1;
low_sprt_ogg_output(sound_dev, &pcm);
}
else
{
UINT32 start_point;
UINT32 full_count, count;
full_count = out_samp_num / 576;
count = out_samp_num % 576;
if(pcm.ch_num == 1) //(SINGLE_CHANNEL)
{
snd_set_duplicate(sound_dev, SND_DUP_L);
for (start_point = 0; start_point < full_count; start_point++)
{
for(i=0; i<576; i++)
{
*(processed_pcm+(i*2)) = (INT32)out_buf_temp[start_point * 576 + i] << 8;
*(processed_pcm+(i*2 + 1)) = (INT32)out_buf_temp[start_point * 576 + i] << 8;
}
pcm.samp_num = 1152;
low_sprt_ogg_output(sound_dev, &pcm);
}
for (i=0; i<count; ++i)
{
*(processed_pcm+(i*2)) = (INT32)out_buf_temp[start_point*576 + i] << 8;
*(processed_pcm+(i*2 + 1)) = (INT32)out_buf_temp[start_point*576 + i] << 8;
}
if (count)
{
pcm.samp_num = count * 2;
low_sprt_ogg_output(sound_dev, &pcm);
}
}
else
{
snd_set_duplicate(sound_dev, SND_DUP_NONE);
for (start_point = 0; start_point < full_count; start_point++)
{
for(i=0; i<576; i++)
{
*(processed_pcm+(i*2)) = (INT32)out_buf_temp[start_point*576*ogg_file->channel + i*ogg_file->channel] << 8;
*(processed_pcm+(i*2 + 1)) = (INT32)out_buf_temp[start_point*576*ogg_file->channel + i*ogg_file->channel] << 8;
*(processed_pcm + 1152 + (i*2)) = (INT32)out_buf_temp[start_point*576*ogg_file->channel + i*ogg_file->channel + 1] << 8;
*(processed_pcm + 1152 + (i*2 + 1))= (INT32)out_buf_temp[start_point*576*ogg_file->channel + i*ogg_file->channel + 1] << 8;
}
pcm.samp_num = 1152;
low_sprt_ogg_output(sound_dev, &pcm);
}
for (i=0; i<count; ++i)
{
*(processed_pcm+(i*2)) = (INT32)out_buf_temp[start_point*576*ogg_file->channel + i*ogg_file->channel] << 8;
*(processed_pcm+(i*2 + 1)) = (INT32)out_buf_temp[start_point*576*ogg_file->channel + i*ogg_file->channel] << 8;
*(processed_pcm + 1152 + (i*2)) = (INT32)out_buf_temp[start_point*576*ogg_file->channel + i*ogg_file->channel + 1] << 8;
*(processed_pcm + 1152 + (i*2 + 1))= (INT32)out_buf_temp[start_point*576*ogg_file->channel + i*ogg_file->channel + 1] << 8;
}
if (count)
{
pcm.samp_num = count * 2;
low_sprt_ogg_output(sound_dev, &pcm);
}
}
}
if(bytes_left > 0)
{
MEMCPY((char*)(g_temp_pcm_buff),(char*)(ogg_file->pcm_out_buff+(bytes_readed-bytes_left)),bytes_left);
g_pcm_current_using = bytes_left;
g_pcm_sample_num = bytes_left/ogg_file->channel/2;
}
return;
}
if(12000==ogg_file->samplerate||11025==ogg_file->samplerate||8000==ogg_file->samplerate)
{
INT32 cur_sp = 0;
// static UINT32 prev_sp_l = 0,prev_sp_r = 0;
ogg_dup_samplerate = ogg_file->samplerate<<2;
if(out_samp_num<=288)
{
if(pcm.ch_num == 1) //(SINGLE_CHANNEL==ogg_file->aud_mode)
{
snd_set_duplicate(sound_dev, SND_DUP_L);
for (i=0; i<out_samp_num; ++i)
{
cur_sp = (INT32)out_buf_temp[i] << 8;
*(processed_pcm+(i*4)) = prev_sp_l+(cur_sp-prev_sp_l)/4;
*(processed_pcm+(i*4 + 1)) = prev_sp_l+(cur_sp-prev_sp_l)/2;
*(processed_pcm+(i*4 + 2)) = prev_sp_l+(cur_sp-prev_sp_l)*3/4;
*(processed_pcm+(i*4 + 3)) = cur_sp;
prev_sp_l = cur_sp;
}
}
else
{
snd_set_duplicate(sound_dev, SND_DUP_NONE);
for (i=0; i<out_samp_num; ++i)
{
cur_sp = (INT32)out_buf_temp[i*ogg_file->channel] << 8;
*(processed_pcm+(i*4)) = prev_sp_l+(cur_sp-prev_sp_l)/4;
*(processed_pcm+(i*4 + 1)) = prev_sp_l+(cur_sp-prev_sp_l)/2;
*(processed_pcm+(i*4 + 2)) = prev_sp_l+(cur_sp-prev_sp_l)*3/4;
*(processed_pcm+(i*4 + 3)) = cur_sp;
prev_sp_l = cur_sp;
cur_sp = (INT32)out_buf_temp[i*ogg_file->channel+1] << 8;
*(processed_pcm + 1152 + (i*4)) = prev_sp_r+(cur_sp-prev_sp_r)/4;
*(processed_pcm + 1152 + (i*4 + 1))= prev_sp_r+(cur_sp-prev_sp_r)/2;
*(processed_pcm + 1152 + (i*4 + 2))= prev_sp_r+(cur_sp-prev_sp_r)*3/4;
*(processed_pcm + 1152 + (i*4 + 3))= cur_sp;
prev_sp_r = cur_sp;
}
}
pcm.samp_num = out_samp_num<<2;
low_sprt_ogg_output(sound_dev, &pcm);
}
else //out_samp_num>288
{
UINT32 start_point;
UINT32 full_count, count;
full_count = out_samp_num / 288;
count = out_samp_num % 288;
if(pcm.ch_num == 1) //(SINGLE_CHANNEL)
{
snd_set_duplicate(sound_dev, SND_DUP_L);
for (start_point = 0; start_point < full_count; start_point++)
{
for(i=0; i<288; i++)
{
cur_sp = (INT32)out_buf_temp[start_point*288+i] << 8;
*(processed_pcm+(i*4)) = prev_sp_l+(cur_sp-prev_sp_l)/4;
*(processed_pcm+(i*4 + 1)) = prev_sp_l+(cur_sp-prev_sp_l)/2;
*(processed_pcm+(i*4 + 2)) = prev_sp_l+(cur_sp-prev_sp_l)*3/4;
*(processed_pcm+(i*4 + 3)) = cur_sp;
prev_sp_l = cur_sp;
}
pcm.samp_num = 1152;
low_sprt_ogg_output(sound_dev, &pcm);
}
for (i=0; i<count; ++i)
{
cur_sp = (INT32)out_buf_temp[start_point*288+i] << 8;
*(processed_pcm+(i*4)) = prev_sp_l+(cur_sp-prev_sp_l)/4;
*(processed_pcm+(i*4 + 1)) = prev_sp_l+(cur_sp-prev_sp_l)/2;
*(processed_pcm+(i*4 + 2)) = prev_sp_l+(cur_sp-prev_sp_l)*3/4;
*(processed_pcm+(i*4 + 3)) = cur_sp;
prev_sp_l = cur_sp;
}
if (count)
{
pcm.samp_num = count * 4;
low_sprt_ogg_output(sound_dev, &pcm);
}
}
else
{
snd_set_duplicate(sound_dev, SND_DUP_NONE);
for (start_point = 0; start_point < full_count; start_point++)
{
for(i=0; i<288; i++)
{
cur_sp = (INT32)out_buf_temp[start_point*288*ogg_file->channel+i*ogg_file->channel] << 8;
*(processed_pcm+(i*4)) = prev_sp_l+(cur_sp-prev_sp_l)/4;
*(processed_pcm+(i*4 + 1)) = prev_sp_l+(cur_sp-prev_sp_l)/2;
*(processed_pcm+(i*4 + 2)) = prev_sp_l+(cur_sp-prev_sp_l)*3/4;
*(processed_pcm+(i*4 + 3)) = cur_sp;
prev_sp_l = cur_sp;
cur_sp = (INT32)out_buf_temp[start_point*288*ogg_file->channel+i*ogg_file->channel+1] << 8;
*(processed_pcm + 1152 + (i*4)) = prev_sp_r+(cur_sp-prev_sp_r)/4;
*(processed_pcm + 1152 + (i*4 + 1))= prev_sp_r+(cur_sp-prev_sp_r)/2;
*(processed_pcm + 1152 + (i*4 + 2))= prev_sp_r+(cur_sp-prev_sp_r)*3/4;
*(processed_pcm + 1152 + (i*4 + 3))= cur_sp;
prev_sp_r = cur_sp;
}
pcm.samp_num = 1152;
low_sprt_ogg_output(sound_dev, &pcm);
}
for (i=0; i<count; ++i)
{
cur_sp = (INT32)out_buf_temp[start_point*288*ogg_file->channel+i*ogg_file->channel] << 8;
*(processed_pcm+(i*4)) = prev_sp_l+(cur_sp-prev_sp_l)/4;
*(processed_pcm+(i*4 + 1)) = prev_sp_l+(cur_sp-prev_sp_l)/2;
*(processed_pcm+(i*4 + 2)) = prev_sp_l+(cur_sp-prev_sp_l)*3/4;
*(processed_pcm+(i*4 + 3)) = cur_sp;
prev_sp_l = cur_sp;
cur_sp = (INT32)out_buf_temp[start_point*288*ogg_file->channel+i*ogg_file->channel+1] << 8;
*(processed_pcm + 1152 + (i*4)) = prev_sp_r+(cur_sp-prev_sp_r)/4;
*(processed_pcm + 1152 + (i*4 + 1))= prev_sp_r+(cur_sp-prev_sp_r)/2;
*(processed_pcm + 1152 + (i*4 + 2))= prev_sp_r+(cur_sp-prev_sp_r)*3/4;
*(processed_pcm + 1152 + (i*4 + 3))= cur_sp;
prev_sp_r = cur_sp;
}
if (count)
{
pcm.samp_num = count * 4;
low_sprt_ogg_output(sound_dev, &pcm);
}
}
}
if(bytes_left > 0)
{
MEMCPY((char*)(g_temp_pcm_buff),(char*)(ogg_file->pcm_out_buff+(bytes_readed-bytes_left)),bytes_left);
g_pcm_current_using = bytes_left;
g_pcm_sample_num = bytes_left/ogg_file->channel/2;
}
return;
}
//normal samprate
if(pcm.ch_num == 1) //(SINGLE_CHANNEL==ogg_file->aud_mode)
{
snd_set_duplicate(sound_dev, SND_DUP_L);
for(i=0;i<out_samp_num;i++)
{
*(processed_pcm + i) = (INT32)out_buf_temp[i] << 8;
}
}
else
{
snd_set_duplicate(sound_dev, SND_DUP_NONE);
for(i=0;i<out_samp_num;i++)
{
*(processed_pcm + i) = (INT32)out_buf_temp[i*ogg_file->channel] << 8;
*(processed_pcm + 1152 + i) = (INT32)out_buf_temp[i*ogg_file->channel+1] << 8;
}
}
ogg_dup_samplerate = ogg_file->samplerate;
low_sprt_ogg_output(sound_dev, &pcm);
if(bytes_left > 0)
{
MEMCPY((char*)(g_temp_pcm_buff),(char*)(ogg_file->pcm_out_buff+(bytes_readed-bytes_left)),bytes_left);
g_pcm_current_using = bytes_left;
g_pcm_sample_num = bytes_left/ogg_file->channel/2;
}
}
