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Fixed audio

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Francisco Javier Trujillo Mata 2023-02-11 21:10:26 +01:00 committed by Sam Lantinga
parent 4a6f3cf47e
commit b728de788e
1 changed files with 34 additions and 16 deletions
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50
src/audio/psp/SDL_pspaudio.c
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@ -38,6 +38,11 @@
/* The tag name used by PSP audio */
#define PSPAUDIO_DRIVER_NAME "psp"
static inline SDL_bool isBasicAudioConfig(const SDL_AudioSpec *spec)
{
return spec->freq == 44100;
}
static int PSPAUDIO_OpenDevice(_THIS, const char *devname)
{
int format, mixlen, i;
@ -52,23 +57,37 @@ static int PSPAUDIO_OpenDevice(_THIS, const char *devname)
/* device only natively supports S16LSB */
this->spec.format = AUDIO_S16LSB;
/* The sample count must be a multiple of 64. */
this->spec.samples = PSP_AUDIO_SAMPLE_ALIGN(this->spec.samples);
/* Setup the hardware channel. */
if (this->spec.channels == 1) {
format = PSP_AUDIO_FORMAT_MONO;
} else {
format = PSP_AUDIO_FORMAT_STEREO;
this->spec.channels = 2; /* we're forcing the hardware to stereo. */
}
/* PSP has some limitations with the Audio. It fully supports 44.1KHz (Mono & Stereo),
however with frequencies differents than 44.1KHz, it just supports Stereo,
so a resampler must be done for these scenarios */
if (this->spec.freq == 44100) {
if (isBasicAudioConfig(&this->spec)) {
/* The sample count must be a multiple of 64. */
this->spec.samples = PSP_AUDIO_SAMPLE_ALIGN(this->spec.samples);
/* The number of channels (1 or 2). */
this->spec.channels = this->spec.channels == 1 ? 1 : 2;
format = this->spec.channels == 1 ? PSP_AUDIO_FORMAT_MONO : PSP_AUDIO_FORMAT_STEREO;
this->hidden->channel = sceAudioChReserve(PSP_AUDIO_NEXT_CHANNEL, this->spec.samples, format);
} else {
/* 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11050, 8000 */
switch (this->spec.freq) {
case 8000:
case 11025:
case 12000:
case 16000:
case 22050:
case 24000:
case 32000:
case 44100:
case 48000:
this->spec.freq = this->spec.freq;
break;
default:
this->spec.freq = 48000;
break;
}
/* The number of samples to output in one output call (min 17, max 4111). */
this->spec.samples = this->spec.samples < 17 ? 17 : (this->spec.samples > 4111 ? 4111 : this->spec.samples);
this->spec.channels = 2; /* we're forcing the hardware to stereo. */
this->hidden->channel = sceAudioSRCChReserve(this->spec.samples, this->spec.freq, 2);
}
@ -101,12 +120,11 @@ static int PSPAUDIO_OpenDevice(_THIS, const char *devname)
static void PSPAUDIO_PlayDevice(_THIS)
{
if (this->spec.freq != 44100) {
Uint8 *mixbuf = this->hidden->mixbufs[this->hidden->next_buffer];
Uint8 *mixbuf = this->hidden->mixbufs[this->hidden->next_buffer];
if (!isBasicAudioConfig(&this->spec)) {
SDL_assert(this->spec.channels == 2);
sceAudioSRCOutputBlocking(PSP_AUDIO_VOLUME_MAX, mixbuf);
} else {
Uint8 *mixbuf = this->hidden->mixbufs[this->hidden->next_buffer];
sceAudioOutputPannedBlocking(this->hidden->channel, PSP_AUDIO_VOLUME_MAX, PSP_AUDIO_VOLUME_MAX, mixbuf);
}
@ -127,7 +145,7 @@ static Uint8 *PSPAUDIO_GetDeviceBuf(_THIS)
static void PSPAUDIO_CloseDevice(_THIS)
{
if (this->hidden->channel >= 0) {
if (this->spec.freq != 44100) {
if (!isBasicAudioConfig(&this->spec)) {
sceAudioSRCChRelease();
} else {
sceAudioChRelease(this->hidden->channel);