1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libcubeb/src/cubeb.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,260 @@
1.4 +/*
1.5 + * Copyright © 2013 Mozilla Foundation
1.6 + *
1.7 + * This program is made available under an ISC-style license. See the
1.8 + * accompanying file LICENSE for details.
1.9 + */
1.10 +#include <stddef.h>
1.11 +#if defined(HAVE_CONFIG_H)
1.12 +#include "config.h"
1.13 +#endif
1.14 +#include "cubeb/cubeb.h"
1.15 +#include "cubeb-internal.h"
1.16 +
1.17 +#define NELEMS(x) ((int) (sizeof(x) / sizeof(x[0])))
1.18 +
1.19 +struct cubeb {
1.20 + struct cubeb_ops * ops;
1.21 +};
1.22 +
1.23 +struct cubeb_stream {
1.24 + struct cubeb * context;
1.25 +};
1.26 +
1.27 +#if defined(USE_PULSE)
1.28 +int pulse_init(cubeb ** context, char const * context_name);
1.29 +#endif
1.30 +#if defined(USE_JACK)
1.31 +int jack_init (cubeb ** context, char const * context_name);
1.32 +#endif
1.33 +#if defined(USE_ALSA)
1.34 +int alsa_init(cubeb ** context, char const * context_name);
1.35 +#endif
1.36 +#if defined(USE_AUDIOQUEUE)
1.37 +int audioqueue_init(cubeb ** context, char const * context_name);
1.38 +#endif
1.39 +#if defined(USE_AUDIOUNIT)
1.40 +int audiounit_init(cubeb ** context, char const * context_name);
1.41 +#endif
1.42 +#if defined(USE_DIRECTSOUND)
1.43 +int directsound_init(cubeb ** context, char const * context_name);
1.44 +#endif
1.45 +#if defined(USE_WINMM)
1.46 +int winmm_init(cubeb ** context, char const * context_name);
1.47 +#endif
1.48 +#if defined(USE_WASAPI)
1.49 +int wasapi_init(cubeb ** context, char const * context_name);
1.50 +#endif
1.51 +#if defined(USE_SNDIO)
1.52 +int sndio_init(cubeb ** context, char const * context_name);
1.53 +#endif
1.54 +#if defined(USE_OPENSL)
1.55 +int opensl_init(cubeb ** context, char const * context_name);
1.56 +#endif
1.57 +#if defined(USE_AUDIOTRACK)
1.58 +int audiotrack_init(cubeb ** context, char const * context_name);
1.59 +#endif
1.60 +
1.61 +int
1.62 +validate_stream_params(cubeb_stream_params stream_params)
1.63 +{
1.64 + if (stream_params.rate < 1000 || stream_params.rate > 192000 ||
1.65 + stream_params.channels < 1 || stream_params.channels > 8) {
1.66 + return CUBEB_ERROR_INVALID_FORMAT;
1.67 + }
1.68 +
1.69 + switch (stream_params.format) {
1.70 + case CUBEB_SAMPLE_S16LE:
1.71 + case CUBEB_SAMPLE_S16BE:
1.72 + case CUBEB_SAMPLE_FLOAT32LE:
1.73 + case CUBEB_SAMPLE_FLOAT32BE:
1.74 + return CUBEB_OK;
1.75 + }
1.76 +
1.77 + return CUBEB_ERROR_INVALID_FORMAT;
1.78 +}
1.79 +
1.80 +int
1.81 +validate_latency(int latency)
1.82 +{
1.83 + if (latency < 1 || latency > 2000) {
1.84 + return CUBEB_ERROR_INVALID_PARAMETER;
1.85 + }
1.86 + return CUBEB_OK;
1.87 +}
1.88 +
1.89 +int
1.90 +cubeb_init(cubeb ** context, char const * context_name)
1.91 +{
1.92 + int (* init[])(cubeb **, char const *) = {
1.93 +#if defined(USE_PULSE)
1.94 + pulse_init,
1.95 +#endif
1.96 +#if defined(USE_JACK)
1.97 + jack_init,
1.98 +#endif
1.99 +#if defined(USE_ALSA)
1.100 + alsa_init,
1.101 +#endif
1.102 +#if defined(USE_AUDIOUNIT)
1.103 + audiounit_init,
1.104 +#endif
1.105 +#if defined(USE_AUDIOQUEUE)
1.106 + audioqueue_init,
1.107 +#endif
1.108 +#if defined(USE_WASAPI)
1.109 + wasapi_init,
1.110 +#endif
1.111 +#if defined(USE_WINMM)
1.112 + winmm_init,
1.113 +#endif
1.114 +#if defined(USE_DIRECTSOUND)
1.115 + directsound_init,
1.116 +#endif
1.117 +#if defined(USE_SNDIO)
1.118 + sndio_init,
1.119 +#endif
1.120 +#if defined(USE_OPENSL)
1.121 + opensl_init,
1.122 +#endif
1.123 +#if defined(USE_AUDIOTRACK)
1.124 + audiotrack_init,
1.125 +#endif
1.126 + };
1.127 + int i;
1.128 +
1.129 + if (!context) {
1.130 + return CUBEB_ERROR_INVALID_PARAMETER;
1.131 + }
1.132 +
1.133 + for (i = 0; i < NELEMS(init); ++i) {
1.134 + if (init[i](context, context_name) == CUBEB_OK) {
1.135 + return CUBEB_OK;
1.136 + }
1.137 + }
1.138 +
1.139 + return CUBEB_ERROR;
1.140 +}
1.141 +
1.142 +char const *
1.143 +cubeb_get_backend_id(cubeb * context)
1.144 +{
1.145 + if (!context) {
1.146 + return NULL;
1.147 + }
1.148 +
1.149 + return context->ops->get_backend_id(context);
1.150 +}
1.151 +
1.152 +int
1.153 +cubeb_get_max_channel_count(cubeb * context, uint32_t * max_channels)
1.154 +{
1.155 + if (!context || !max_channels) {
1.156 + return CUBEB_ERROR_INVALID_PARAMETER;
1.157 + }
1.158 +
1.159 + return context->ops->get_max_channel_count(context, max_channels);
1.160 +}
1.161 +
1.162 +int
1.163 +cubeb_get_min_latency(cubeb * context, cubeb_stream_params params, uint32_t * latency_ms)
1.164 +{
1.165 + if (!context || !latency_ms) {
1.166 + return CUBEB_ERROR_INVALID_PARAMETER;
1.167 + }
1.168 + return context->ops->get_min_latency(context, params, latency_ms);
1.169 +}
1.170 +
1.171 +int
1.172 +cubeb_get_preferred_sample_rate(cubeb * context, uint32_t * rate)
1.173 +{
1.174 + if (!context || !rate) {
1.175 + return CUBEB_ERROR_INVALID_PARAMETER;
1.176 + }
1.177 + return context->ops->get_preferred_sample_rate(context, rate);
1.178 +}
1.179 +
1.180 +void
1.181 +cubeb_destroy(cubeb * context)
1.182 +{
1.183 + if (!context) {
1.184 + return;
1.185 + }
1.186 +
1.187 + context->ops->destroy(context);
1.188 +}
1.189 +
1.190 +int
1.191 +cubeb_stream_init(cubeb * context, cubeb_stream ** stream, char const * stream_name,
1.192 + cubeb_stream_params stream_params, unsigned int latency,
1.193 + cubeb_data_callback data_callback,
1.194 + cubeb_state_callback state_callback,
1.195 + void * user_ptr)
1.196 +{
1.197 + int r;
1.198 +
1.199 + if (!context || !stream) {
1.200 + return CUBEB_ERROR_INVALID_PARAMETER;
1.201 + }
1.202 +
1.203 + if ((r = validate_stream_params(stream_params)) != CUBEB_OK ||
1.204 + (r = validate_latency(latency)) != CUBEB_OK) {
1.205 + return r;
1.206 + }
1.207 +
1.208 + return context->ops->stream_init(context, stream, stream_name,
1.209 + stream_params, latency,
1.210 + data_callback,
1.211 + state_callback,
1.212 + user_ptr);
1.213 +}
1.214 +
1.215 +void
1.216 +cubeb_stream_destroy(cubeb_stream * stream)
1.217 +{
1.218 + if (!stream) {
1.219 + return;
1.220 + }
1.221 +
1.222 + stream->context->ops->stream_destroy(stream);
1.223 +}
1.224 +
1.225 +int
1.226 +cubeb_stream_start(cubeb_stream * stream)
1.227 +{
1.228 + if (!stream) {
1.229 + return CUBEB_ERROR_INVALID_PARAMETER;
1.230 + }
1.231 +
1.232 + return stream->context->ops->stream_start(stream);
1.233 +}
1.234 +
1.235 +int
1.236 +cubeb_stream_stop(cubeb_stream * stream)
1.237 +{
1.238 + if (!stream) {
1.239 + return CUBEB_ERROR_INVALID_PARAMETER;
1.240 + }
1.241 +
1.242 + return stream->context->ops->stream_stop(stream);
1.243 +}
1.244 +
1.245 +int
1.246 +cubeb_stream_get_position(cubeb_stream * stream, uint64_t * position)
1.247 +{
1.248 + if (!stream || !position) {
1.249 + return CUBEB_ERROR_INVALID_PARAMETER;
1.250 + }
1.251 +
1.252 + return stream->context->ops->stream_get_position(stream, position);
1.253 +}
1.254 +
1.255 +int
1.256 +cubeb_stream_get_latency(cubeb_stream * stream, uint32_t * latency)
1.257 +{
1.258 + if (!stream || !latency) {
1.259 + return CUBEB_ERROR_INVALID_PARAMETER;
1.260 + }
1.261 +
1.262 + return stream->context->ops->stream_get_latency(stream, latency);
1.263 +}
