mirror of
https://github.com/libretro/RetroArch.git
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117 lines
2.7 KiB
C
117 lines
2.7 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2013 - Hans-Kristian Arntzen
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "driver.h"
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#include <stdlib.h>
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#include <roaraudio.h>
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#include <errno.h>
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#include <stdio.h>
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#include "../boolean.h"
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#include "general.h"
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typedef struct
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{
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roar_vs_t *vss;
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bool nonblocking;
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} roar_t;
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static void *ra_init(const char *device, unsigned rate, unsigned latency)
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{
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(void)latency;
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int err;
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roar_t *roar = (roar_t*)calloc(1, sizeof(roar_t));
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if (roar == NULL)
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return NULL;
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roar_vs_t *vss;
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if ((vss = roar_vs_new_simple(device, "RetroArch", rate, 2, ROAR_CODEC_PCM_S, 16, ROAR_DIR_PLAY, &err)) == NULL)
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{
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RARCH_ERR("RoarAudio: \"%s\"\n", roar_vs_strerr(err));
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free(roar);
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return NULL;
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}
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roar_vs_role(vss, ROAR_ROLE_GAME, NULL);
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roar->vss = vss;
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return roar;
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}
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static ssize_t ra_write(void *data, const void *buf, size_t size)
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{
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roar_t *roar = (roar_t*)data;
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ssize_t rc;
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if (size == 0)
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return 0;
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int err;
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size_t written = 0;
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while (written < size)
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{
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size_t write_amt = size - written;
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if ((rc = roar_vs_write(roar->vss, (const char*)buf + written, write_amt, &err)) < (ssize_t)write_amt)
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{
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if (roar->nonblocking)
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return rc;
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else if (rc < 0)
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return -1;
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}
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written += rc;
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}
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return size;
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}
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static bool ra_stop(void *data)
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{
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(void)data;
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return true;
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}
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static void ra_set_nonblock_state(void *data, bool state)
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{
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roar_t *roar = (roar_t*)data;
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if (roar_vs_blocking(roar->vss, (state) ? ROAR_VS_FALSE : ROAR_VS_TRUE, NULL) < 0)
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fprintf(stderr, "RetroArch [ERROR]: Can't set nonblocking. Will not be able to fast-forward.\n");
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roar->nonblocking = state;
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}
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static bool ra_start(void *data)
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{
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(void)data;
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return true;
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}
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static void ra_free(void *data)
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{
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roar_t *roar = (roar_t*)data;
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roar_vs_close(roar->vss, ROAR_VS_TRUE, NULL);
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free(data);
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}
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const audio_driver_t audio_roar = {
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ra_init,
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ra_write,
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ra_stop,
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ra_start,
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ra_set_nonblock_state,
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ra_free,
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NULL,
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"roar"
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};
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