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(CTR/3DS) audio: add the missing callbacks needed by DRC and

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compute_audio_buffer_statistics.
This commit is contained in:
aliaspider 2015-09-28 15:39:30 +01:00
parent e2037c477e
commit 40e2e7d636
1 changed files with 27 additions and 13 deletions
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40
audio/drivers/ctr_audio.c
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@ -13,6 +13,7 @@
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <3ds.h>
#include "../../general.h"
#include "../../driver.h"
#include "../../performance.h"
@ -41,6 +42,18 @@ typedef struct
#define CTR_AUDIO_SIZE (CTR_AUDIO_COUNT * sizeof(int16_t))
#define CTR_AUDIO_SIZE_MASK (CTR_AUDIO_SIZE - 1u)
static void ctr_audio_update_playpos(ctr_audio_t* ctr)
{
uint32_t samples_played;
uint64_t current_tick;
current_tick = svcGetSystemTick();
samples_played = (current_tick - ctr->cpu_ticks_last) / ctr->cpu_ticks_per_sample;
ctr->playpos = (ctr->playpos + samples_played) & CTR_AUDIO_COUNT_MASK;
ctr->cpu_ticks_last += samples_played * ctr->cpu_ticks_per_sample;
}
Result csndPlaySound_custom(int chn, u32 flags, u32 sampleRate, float vol, float pan, void* data0, void* data1, u32 size)
{
if (!(csndChannels & BIT(chn)))
@ -156,11 +169,7 @@ static ssize_t ctr_audio_write(void *data, const void *buf, size_t size)
rarch_perf_init(&ctraudio_f, "ctraudio_f");
retro_perf_start(&ctraudio_f);
current_tick = svcGetSystemTick();
samples_played = (current_tick - ctr->cpu_ticks_last) / ctr->cpu_ticks_per_sample;
ctr->playpos = (ctr->playpos + samples_played) & CTR_AUDIO_COUNT_MASK;
ctr->cpu_ticks_last += samples_played * ctr->cpu_ticks_per_sample;
ctr_audio_update_playpos(ctr);
if((((ctr->playpos - ctr->pos) & CTR_AUDIO_COUNT_MASK) < (CTR_AUDIO_COUNT >> 2)) ||
(((ctr->pos - ctr->playpos ) & CTR_AUDIO_COUNT_MASK) < (CTR_AUDIO_COUNT >> 4)) ||
@ -173,10 +182,7 @@ static ssize_t ctr_audio_write(void *data, const void *buf, size_t size)
do{
/* todo: compute the correct sleep period */
retro_sleep(1);
current_tick = svcGetSystemTick();
samples_played = (current_tick - ctr->cpu_ticks_last) / ctr->cpu_ticks_per_sample;
ctr->playpos = (ctr->playpos + samples_played) & CTR_AUDIO_COUNT_MASK;
ctr->cpu_ticks_last += samples_played * ctr->cpu_ticks_per_sample;
ctr_audio_update_playpos(ctr);
}while (((ctr->playpos - ctr->pos) & CTR_AUDIO_COUNT_MASK) < (CTR_AUDIO_COUNT >> 1)
|| (((ctr->pos - ctr->playpos) & CTR_AUDIO_COUNT_MASK) < (CTR_AUDIO_COUNT >> 4)));
}
@ -269,11 +275,19 @@ static bool ctr_audio_use_float(void *data)
static size_t ctr_audio_write_avail(void *data)
{
/* stub */
(void)data;
return 0;
ctr_audio_t* ctr = (ctr_audio_t*)data;
ctr_audio_update_playpos(ctr);
return (ctr->playpos - ctr->pos) & CTR_AUDIO_COUNT_MASK;
}
static size_t ctr_buffer_size(void *data)
{
(void)data;
return CTR_AUDIO_COUNT;
}
audio_driver_t audio_ctr = {
ctr_audio_init,
ctr_audio_write,
@ -285,5 +299,5 @@ audio_driver_t audio_ctr = {
ctr_audio_use_float,
"ctr",
ctr_audio_write_avail,
NULL
ctr_buffer_size
};