mirror of
https://github.com/libretro/RetroArch
synced 2025-03-12 04:14:23 +00:00
Clean up audio a bit. Less use of nasty statics and VLAs.
This commit is contained in:
Themaister
parent
becfeb57eb
commit
6b21e6b8a3
32
audio/jack.c
32
audio/jack.c
@ -29,8 +29,7 @@
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#include <string.h>
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#include <assert.h>
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#define FRAMES(x) (x / (sizeof(int16_t) * 2))
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#define SAMPLES(x) (x / sizeof(int16_t))
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#define FRAMES(x) (x / (sizeof(float) * 2))
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typedef struct jack
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{
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@ -61,13 +60,6 @@ static int process_cb(jack_nframes_t nframes, void *data)
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if (min_avail > nframes)
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min_avail = nframes;
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//static int underrun = 0;
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//if (min_avail < nframes)
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//{
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// SSNES_LOG("JACK: Underrun count: %d\n", underrun++);
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// fprintf(stderr, "required %d frames, got %d.\n", (int)nframes, (int)min_avail);
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//}
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for (int i = 0; i < 2; i++)
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{
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jack_default_audio_sample_t *out = jack_port_get_buffer(jd->ports[i], nframes);
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@ -90,12 +82,6 @@ static void shutdown_cb(void *data)
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pthread_cond_signal(&jd->cond);
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}
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static inline void s16_to_float(jack_default_audio_sample_t * restrict out, const int16_t * restrict in, size_t samples)
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{
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for (int i = 0; i < samples; i++)
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out[i] = (float)in[i] / 0x8000;
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}
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static void parse_ports(const char **dest_ports, const char **jports)
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{
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int parsed = 0;
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@ -142,7 +128,7 @@ static void* __jack_init(const char* device, int rate, int latency)
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bufsize = (latency * g_settings.audio.out_rate / 1000) > jack_bufsize * 2 ? (latency * g_settings.audio.out_rate / 1000) : jack_bufsize * 2;
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bufsize *= sizeof(jack_default_audio_sample_t);
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//fprintf(stderr, "jack buffer size: %d\n", (int)bufsize);
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SSNES_LOG("Jack buffer size: %d bytes: (~%.2f msec latency)\n", (int)bufsize, (float)bufsize * 1000 / (g_settings.audio.out_rate * sizeof(jack_default_audio_sample_t)));
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for (int i = 0; i < 2; i++)
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{
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jd->buffer[i] = jack_ringbuffer_create(bufsize);
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@ -181,7 +167,6 @@ static void* __jack_init(const char* device, int rate, int latency)
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pthread_cond_init(&jd->cond, NULL);
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pthread_mutex_init(&jd->cond_lock, NULL);
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jack_free(jports);
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return jd;
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@ -191,17 +176,13 @@ error:
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return NULL;
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}
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static size_t write_buffer(jack_t *jd, const void *buf, size_t size)
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static size_t write_buffer(jack_t *jd, const float *buf, size_t size)
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{
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//fprintf(stderr, "write_buffer: size: %zu\n", size);
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// Convert our data to float, deinterleave and write.
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jack_default_audio_sample_t out_buffer[size / sizeof(int16_t)];
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jack_default_audio_sample_t out_deinterleaved_buffer[2][FRAMES(size)];
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s16_to_float(out_buffer, buf, SAMPLES(size));
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for (int i = 0; i < 2; i++)
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for (size_t j = 0; j < FRAMES(size); j++)
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out_deinterleaved_buffer[i][j] = out_buffer[j * 2 + i];
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out_deinterleaved_buffer[i][j] = buf[j * 2 + i];
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for(;;)
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{
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@ -216,13 +197,11 @@ static size_t write_buffer(jack_t *jd, const void *buf, size_t size)
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if (jd->nonblock)
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{
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if (min_avail < FRAMES(size) * sizeof(jack_default_audio_sample_t))
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size = min_avail * 2 * sizeof(int16_t) / sizeof(jack_default_audio_sample_t);
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size = min_avail * 2;
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break;
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}
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else
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{
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//fprintf(stderr, "Write avail is: %d\n", (int)min_avail);
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if (min_avail >= FRAMES(size) * sizeof(jack_default_audio_sample_t))
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break;
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}
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@ -290,6 +269,7 @@ const audio_driver_t audio_jack = {
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.start = __jack_start,
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.set_nonblock_state = __jack_set_nonblock_state,
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.free = __jack_free,
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.float_samples = true,
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.ident = "jack"
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};
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26
driver.c
26
driver.c
@ -21,6 +21,7 @@
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#include <stdio.h>
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#include <string.h>
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#include "hqflt/filters.h"
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#include <assert.h>
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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@ -128,6 +129,9 @@ void uninit_drivers(void)
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uninit_audio();
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}
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#define AUDIO_CHUNK_SIZE_BLOCKING 64
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#define AUDIO_CHUNK_SIZE_NONBLOCKING 2048 // So we don't get complete line-noise when fast-forwarding audio.
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#define AUDIO_MAX_RATIO 16
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void init_audio(void)
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{
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if (!g_settings.audio.enable)
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@ -138,17 +142,35 @@ void init_audio(void)
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find_audio_driver();
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g_extern.audio_data.block_chunk_size = AUDIO_CHUNK_SIZE_BLOCKING;
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g_extern.audio_data.nonblock_chunk_size = AUDIO_CHUNK_SIZE_NONBLOCKING;
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driver.audio_data = driver.audio->init(strlen(g_settings.audio.device) ? g_settings.audio.device : NULL, g_settings.audio.out_rate, g_settings.audio.latency);
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if ( driver.audio_data == NULL )
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g_extern.audio_active = false;
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if (!g_settings.audio.sync && g_extern.audio_active)
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{
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driver.audio->set_nonblock_state(driver.audio_data, true);
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g_extern.audio_data.chunk_size = g_extern.audio_data.nonblock_chunk_size;
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}
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else
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g_extern.audio_data.chunk_size = g_extern.audio_data.block_chunk_size;
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int err;
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g_extern.source = src_new(g_settings.audio.src_quality, 2, &err);
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if (!g_extern.source)
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g_extern.audio_active = false;
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size_t max_bufsamples = g_extern.audio_data.block_chunk_size > g_extern.audio_data.nonblock_chunk_size ?
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g_extern.audio_data.block_chunk_size : g_extern.audio_data.nonblock_chunk_size;
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assert(g_settings.audio.out_rate < g_settings.audio.in_rate * AUDIO_MAX_RATIO);
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assert((g_extern.audio_data.data = malloc(max_bufsamples * sizeof(float))));
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g_extern.audio_data.data_ptr = 0;
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assert((g_extern.audio_data.outsamples = malloc(max_bufsamples * sizeof(float) * AUDIO_MAX_RATIO)));
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assert((g_extern.audio_data.conv_outsamples = malloc(max_bufsamples * sizeof(int16_t) * AUDIO_MAX_RATIO)));
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}
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void uninit_audio(void)
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@ -164,6 +186,10 @@ void uninit_audio(void)
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if ( g_extern.source )
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src_delete(g_extern.source);
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free(g_extern.audio_data.data); g_extern.audio_data.data = NULL;
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free(g_extern.audio_data.outsamples); g_extern.audio_data.outsamples = NULL;
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free(g_extern.audio_data.conv_outsamples); g_extern.audio_data.conv_outsamples = NULL;
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}
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void init_video_input(void)
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1
driver.h
1
driver.h
@ -61,6 +61,7 @@ typedef struct audio_driver
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bool (*start)(void* data);
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void (*set_nonblock_state)(void* data, bool toggle); // Should we care about blocking in audio thread? Fast forwarding.
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void (*free)(void* data);
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bool float_samples; // Defines if driver will take standard floating point samples, or int16_t samples.
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const char *ident;
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} audio_driver_t;
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12
general.h
12
general.h
@ -117,6 +117,18 @@ struct global
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char savefile_name_bsrm[512];
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char savestate_name[256];
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struct
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{
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float *data;
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size_t data_ptr;
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size_t chunk_size;
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size_t nonblock_chunk_size;
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size_t block_chunk_size;
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float *outsamples;
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int16_t *conv_outsamples;
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} audio_data;
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#ifdef HAVE_FFMPEG
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ffemu_t *rec;
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char record_path[256];
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48
ssnes.c
48
ssnes.c
@ -40,10 +40,6 @@ struct global g_extern = {
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};
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// To avoid continous switching if we hold the button down, we require that the button must go from pressed, unpressed back to pressed to be able to toggle between then.
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#define AUDIO_CHUNK_SIZE_BLOCKING 64
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#define AUDIO_CHUNK_SIZE_NONBLOCKING 2048 // So we don't get complete line-noise when fast-forwarding audio.
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static size_t audio_chunk_size = AUDIO_CHUNK_SIZE_BLOCKING;
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static void set_fast_forward_button(bool new_button_state)
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{
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static bool old_button_state = false;
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@ -55,10 +51,11 @@ static void set_fast_forward_button(bool new_button_state)
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driver.video->set_nonblock_state(driver.video_data, syncing_state);
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if (g_extern.audio_active)
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driver.audio->set_nonblock_state(driver.audio_data, (g_settings.audio.sync) ? syncing_state : true);
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if (syncing_state)
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audio_chunk_size = AUDIO_CHUNK_SIZE_NONBLOCKING;
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g_extern.audio_data.chunk_size = g_extern.audio_data.nonblock_chunk_size;
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else
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audio_chunk_size = AUDIO_CHUNK_SIZE_BLOCKING;
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g_extern.audio_data.chunk_size = g_extern.audio_data.block_chunk_size;
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}
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old_button_state = new_button_state;
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}
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@ -163,37 +160,42 @@ static void audio_sample(uint16_t left, uint16_t right)
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}
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#endif
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static float data[AUDIO_CHUNK_SIZE_NONBLOCKING];
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static int data_ptr = 0;
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g_extern.audio_data.data[g_extern.audio_data.data_ptr++] = (float)(*(int16_t*)&left)/0x8000;
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g_extern.audio_data.data[g_extern.audio_data.data_ptr++] = (float)(*(int16_t*)&right)/0x8000;
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data[data_ptr++] = (float)(*(int16_t*)&left)/0x8000;
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data[data_ptr++] = (float)(*(int16_t*)&right)/0x8000;
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if ( data_ptr >= audio_chunk_size )
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if (g_extern.audio_data.data_ptr >= g_extern.audio_data.chunk_size)
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{
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float outsamples[audio_chunk_size * 16];
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int16_t temp_outsamples[audio_chunk_size * 16];
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SRC_DATA src_data;
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src_data.data_in = data;
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src_data.data_out = outsamples;
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src_data.input_frames = audio_chunk_size / 2;
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src_data.output_frames = audio_chunk_size * 8;
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src_data.data_in = g_extern.audio_data.data;
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src_data.data_out = g_extern.audio_data.outsamples;
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src_data.input_frames = g_extern.audio_data.chunk_size / 2;
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src_data.output_frames = g_extern.audio_data.chunk_size * 8;
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src_data.end_of_input = 0;
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src_data.src_ratio = (double)g_settings.audio.out_rate / (double)g_settings.audio.in_rate;
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src_process(g_extern.source, &src_data);
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src_float_to_short_array(outsamples, temp_outsamples, src_data.output_frames_gen * 2);
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if ( driver.audio->write(driver.audio_data, temp_outsamples, src_data.output_frames_gen * 4) < 0 )
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if (driver.audio->float_samples)
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{
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if (driver.audio->write(driver.audio_data, g_extern.audio_data.outsamples, src_data.output_frames_gen * sizeof(float) * 2) < 0)
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{
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fprintf(stderr, "SSNES [ERROR]: Audio backend failed to write. Will continue without sound.\n");
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g_extern.audio_active = false;
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}
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}
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else
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{
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src_float_to_short_array(g_extern.audio_data.outsamples, g_extern.audio_data.conv_outsamples, src_data.output_frames_gen * 2);
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data_ptr = 0;
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if (driver.audio->write(driver.audio_data, g_extern.audio_data.conv_outsamples, src_data.output_frames_gen * sizeof(int16_t) * 2) < 0)
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{
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fprintf(stderr, "SSNES [ERROR]: Audio backend failed to write. Will continue without sound.\n");
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g_extern.audio_active = false;
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}
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}
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g_extern.audio_data.data_ptr = 0;
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}
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}
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