root / audio / audio_template.h @ 72cf2d4f
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/*
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* QEMU Audio subsystem header
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*
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* Copyright (c) 2005 Vassili Karpov (malc)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifdef DAC
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#define NAME "playback" |
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#define HWBUF hw->mix_buf
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#define TYPE out
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#define HW HWVoiceOut
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#define SW SWVoiceOut
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#else
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#define NAME "capture" |
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#define TYPE in
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#define HW HWVoiceIn
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#define SW SWVoiceIn
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#define HWBUF hw->conv_buf
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#endif
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|
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static void glue (audio_init_nb_voices_, TYPE) (struct audio_driver *drv) |
40 |
{ |
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AudioState *s = &glob_audio_state; |
42 |
int max_voices = glue (drv->max_voices_, TYPE);
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int voice_size = glue (drv->voice_size_, TYPE);
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|
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if (glue (s->nb_hw_voices_, TYPE) > max_voices) {
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if (!max_voices) {
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#ifdef DAC
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dolog ("Driver `%s' does not support " NAME "\n", drv->name); |
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#endif
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} |
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else {
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dolog ("Driver `%s' does not support %d " NAME " voices, max %d\n", |
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drv->name, |
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glue (s->nb_hw_voices_, TYPE), |
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max_voices); |
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} |
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glue (s->nb_hw_voices_, TYPE) = max_voices; |
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} |
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|
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if (audio_bug (AUDIO_FUNC, !voice_size && max_voices)) {
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dolog ("drv=`%s' voice_size=0 max_voices=%d\n",
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drv->name, max_voices); |
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glue (s->nb_hw_voices_, TYPE) = 0;
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} |
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|
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if (audio_bug (AUDIO_FUNC, voice_size && !max_voices)) {
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dolog ("drv=`%s' voice_size=%d max_voices=0\n",
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drv->name, voice_size); |
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} |
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} |
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|
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static void glue (audio_pcm_hw_free_resources_, TYPE) (HW *hw) |
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{ |
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if (HWBUF) {
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qemu_free (HWBUF); |
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} |
77 |
|
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HWBUF = NULL;
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} |
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|
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static int glue (audio_pcm_hw_alloc_resources_, TYPE) (HW *hw) |
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{ |
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HWBUF = audio_calloc (AUDIO_FUNC, hw->samples, sizeof (struct st_sample)); |
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if (!HWBUF) {
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dolog ("Could not allocate " NAME " buffer (%d samples)\n", |
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hw->samples); |
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return -1; |
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} |
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|
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return 0; |
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} |
92 |
|
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static void glue (audio_pcm_sw_free_resources_, TYPE) (SW *sw) |
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{ |
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if (sw->buf) {
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qemu_free (sw->buf); |
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} |
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|
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if (sw->rate) {
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st_rate_stop (sw->rate); |
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} |
102 |
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sw->buf = NULL;
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sw->rate = NULL;
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} |
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|
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static int glue (audio_pcm_sw_alloc_resources_, TYPE) (SW *sw) |
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{ |
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int samples;
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|
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#ifdef DAC
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samples = sw->hw->samples; |
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#else
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samples = ((int64_t) sw->hw->samples << 32) / sw->ratio;
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#endif
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sw->buf = audio_calloc (AUDIO_FUNC, samples, sizeof (struct st_sample)); |
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if (!sw->buf) {
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dolog ("Could not allocate buffer for `%s' (%d samples)\n",
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SW_NAME (sw), samples); |
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return -1; |
122 |
} |
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#ifdef DAC
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sw->rate = st_rate_start (sw->info.freq, sw->hw->info.freq); |
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#else
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sw->rate = st_rate_start (sw->hw->info.freq, sw->info.freq); |
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#endif
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if (!sw->rate) {
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qemu_free (sw->buf); |
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sw->buf = NULL;
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return -1; |
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} |
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return 0; |
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} |
136 |
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static int glue (audio_pcm_sw_init_, TYPE) ( |
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SW *sw, |
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HW *hw, |
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const char *name, |
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struct audsettings *as
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) |
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{ |
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int err;
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|
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audio_pcm_init_info (&sw->info, as); |
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sw->hw = hw; |
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sw->active = 0;
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#ifdef DAC
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sw->ratio = ((int64_t) sw->hw->info.freq << 32) / sw->info.freq;
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sw->total_hw_samples_mixed = 0;
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sw->empty = 1;
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#else
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sw->ratio = ((int64_t) sw->info.freq << 32) / sw->hw->info.freq;
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#endif
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#ifdef DAC
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sw->conv = mixeng_conv |
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#else
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sw->clip = mixeng_clip |
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#endif
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[sw->info.nchannels == 2]
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[sw->info.sign] |
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[sw->info.swap_endianness] |
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[audio_bits_to_index (sw->info.bits)]; |
166 |
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sw->name = qemu_strdup (name); |
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err = glue (audio_pcm_sw_alloc_resources_, TYPE) (sw); |
169 |
if (err) {
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qemu_free (sw->name); |
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sw->name = NULL;
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} |
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return err;
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} |
175 |
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static void glue (audio_pcm_sw_fini_, TYPE) (SW *sw) |
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{ |
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glue (audio_pcm_sw_free_resources_, TYPE) (sw); |
179 |
if (sw->name) {
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qemu_free (sw->name); |
181 |
sw->name = NULL;
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} |
183 |
} |
184 |
|
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static void glue (audio_pcm_hw_add_sw_, TYPE) (HW *hw, SW *sw) |
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{ |
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QLIST_INSERT_HEAD (&hw->sw_head, sw, entries); |
188 |
} |
189 |
|
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static void glue (audio_pcm_hw_del_sw_, TYPE) (SW *sw) |
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{ |
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QLIST_REMOVE (sw, entries); |
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} |
194 |
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static void glue (audio_pcm_hw_gc_, TYPE) (HW **hwp) |
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{ |
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AudioState *s = &glob_audio_state; |
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HW *hw = *hwp; |
199 |
|
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if (!hw->sw_head.lh_first) {
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#ifdef DAC
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audio_detach_capture (hw); |
203 |
#endif
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QLIST_REMOVE (hw, entries); |
205 |
glue (s->nb_hw_voices_, TYPE) += 1;
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glue (audio_pcm_hw_free_resources_ ,TYPE) (hw); |
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glue (hw->pcm_ops->fini_, TYPE) (hw); |
208 |
qemu_free (hw); |
209 |
*hwp = NULL;
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} |
211 |
} |
212 |
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static HW *glue (audio_pcm_hw_find_any_, TYPE) (HW *hw)
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{ |
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AudioState *s = &glob_audio_state; |
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return hw ? hw->entries.le_next : glue (s->hw_head_, TYPE).lh_first;
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} |
218 |
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static HW *glue (audio_pcm_hw_find_any_enabled_, TYPE) (HW *hw)
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{ |
221 |
while ((hw = glue (audio_pcm_hw_find_any_, TYPE) (hw))) {
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if (hw->enabled) {
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return hw;
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} |
225 |
} |
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return NULL; |
227 |
} |
228 |
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static HW *glue (audio_pcm_hw_find_specific_, TYPE) (
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HW *hw, |
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struct audsettings *as
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) |
233 |
{ |
234 |
while ((hw = glue (audio_pcm_hw_find_any_, TYPE) (hw))) {
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if (audio_pcm_info_eq (&hw->info, as)) {
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return hw;
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} |
238 |
} |
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return NULL; |
240 |
} |
241 |
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static HW *glue (audio_pcm_hw_add_new_, TYPE) (struct audsettings *as) |
243 |
{ |
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HW *hw; |
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AudioState *s = &glob_audio_state; |
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struct audio_driver *drv = s->drv;
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if (!glue (s->nb_hw_voices_, TYPE)) {
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return NULL; |
250 |
} |
251 |
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if (audio_bug (AUDIO_FUNC, !drv)) {
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dolog ("No host audio driver\n");
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return NULL; |
255 |
} |
256 |
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if (audio_bug (AUDIO_FUNC, !drv->pcm_ops)) {
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dolog ("Host audio driver without pcm_ops\n");
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return NULL; |
260 |
} |
261 |
|
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hw = audio_calloc (AUDIO_FUNC, 1, glue (drv->voice_size_, TYPE));
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if (!hw) {
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dolog ("Can not allocate voice `%s' size %d\n",
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drv->name, glue (drv->voice_size_, TYPE)); |
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return NULL; |
267 |
} |
268 |
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hw->pcm_ops = drv->pcm_ops; |
270 |
QLIST_INIT (&hw->sw_head); |
271 |
#ifdef DAC
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QLIST_INIT (&hw->cap_head); |
273 |
#endif
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if (glue (hw->pcm_ops->init_, TYPE) (hw, as)) {
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goto err0;
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} |
277 |
|
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if (audio_bug (AUDIO_FUNC, hw->samples <= 0)) { |
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dolog ("hw->samples=%d\n", hw->samples);
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goto err1;
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281 |
} |
282 |
|
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#ifdef DAC
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hw->clip = mixeng_clip |
285 |
#else
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hw->conv = mixeng_conv |
287 |
#endif
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[hw->info.nchannels == 2]
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[hw->info.sign] |
290 |
[hw->info.swap_endianness] |
291 |
[audio_bits_to_index (hw->info.bits)]; |
292 |
|
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if (glue (audio_pcm_hw_alloc_resources_, TYPE) (hw)) {
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goto err1;
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295 |
} |
296 |
|
297 |
QLIST_INSERT_HEAD (&s->glue (hw_head_, TYPE), hw, entries); |
298 |
glue (s->nb_hw_voices_, TYPE) -= 1;
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#ifdef DAC
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audio_attach_capture (hw); |
301 |
#endif
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return hw;
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303 |
|
304 |
err1:
|
305 |
glue (hw->pcm_ops->fini_, TYPE) (hw); |
306 |
err0:
|
307 |
qemu_free (hw); |
308 |
return NULL; |
309 |
} |
310 |
|
311 |
static HW *glue (audio_pcm_hw_add_, TYPE) (struct audsettings *as) |
312 |
{ |
313 |
HW *hw; |
314 |
|
315 |
if (glue (conf.fixed_, TYPE).enabled && glue (conf.fixed_, TYPE).greedy) {
|
316 |
hw = glue (audio_pcm_hw_add_new_, TYPE) (as); |
317 |
if (hw) {
|
318 |
return hw;
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319 |
} |
320 |
} |
321 |
|
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hw = glue (audio_pcm_hw_find_specific_, TYPE) (NULL, as);
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323 |
if (hw) {
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324 |
return hw;
|
325 |
} |
326 |
|
327 |
hw = glue (audio_pcm_hw_add_new_, TYPE) (as); |
328 |
if (hw) {
|
329 |
return hw;
|
330 |
} |
331 |
|
332 |
return glue (audio_pcm_hw_find_any_, TYPE) (NULL); |
333 |
} |
334 |
|
335 |
static SW *glue (audio_pcm_create_voice_pair_, TYPE) (
|
336 |
const char *sw_name, |
337 |
struct audsettings *as
|
338 |
) |
339 |
{ |
340 |
SW *sw; |
341 |
HW *hw; |
342 |
struct audsettings hw_as;
|
343 |
|
344 |
if (glue (conf.fixed_, TYPE).enabled) {
|
345 |
hw_as = glue (conf.fixed_, TYPE).settings; |
346 |
} |
347 |
else {
|
348 |
hw_as = *as; |
349 |
} |
350 |
|
351 |
sw = audio_calloc (AUDIO_FUNC, 1, sizeof (*sw)); |
352 |
if (!sw) {
|
353 |
dolog ("Could not allocate soft voice `%s' (%zu bytes)\n",
|
354 |
sw_name ? sw_name : "unknown", sizeof (*sw)); |
355 |
goto err1;
|
356 |
} |
357 |
|
358 |
hw = glue (audio_pcm_hw_add_, TYPE) (&hw_as); |
359 |
if (!hw) {
|
360 |
goto err2;
|
361 |
} |
362 |
|
363 |
glue (audio_pcm_hw_add_sw_, TYPE) (hw, sw); |
364 |
|
365 |
if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, sw_name, as)) {
|
366 |
goto err3;
|
367 |
} |
368 |
|
369 |
return sw;
|
370 |
|
371 |
err3:
|
372 |
glue (audio_pcm_hw_del_sw_, TYPE) (sw); |
373 |
glue (audio_pcm_hw_gc_, TYPE) (&hw); |
374 |
err2:
|
375 |
qemu_free (sw); |
376 |
err1:
|
377 |
return NULL; |
378 |
} |
379 |
|
380 |
static void glue (audio_close_, TYPE) (SW *sw) |
381 |
{ |
382 |
glue (audio_pcm_sw_fini_, TYPE) (sw); |
383 |
glue (audio_pcm_hw_del_sw_, TYPE) (sw); |
384 |
glue (audio_pcm_hw_gc_, TYPE) (&sw->hw); |
385 |
qemu_free (sw); |
386 |
} |
387 |
|
388 |
void glue (AUD_close_, TYPE) (QEMUSoundCard *card, SW *sw)
|
389 |
{ |
390 |
if (sw) {
|
391 |
if (audio_bug (AUDIO_FUNC, !card)) {
|
392 |
dolog ("card=%p\n", card);
|
393 |
return;
|
394 |
} |
395 |
|
396 |
glue (audio_close_, TYPE) (sw); |
397 |
} |
398 |
} |
399 |
|
400 |
SW *glue (AUD_open_, TYPE) ( |
401 |
QEMUSoundCard *card, |
402 |
SW *sw, |
403 |
const char *name, |
404 |
void *callback_opaque ,
|
405 |
audio_callback_fn_t callback_fn, |
406 |
struct audsettings *as
|
407 |
) |
408 |
{ |
409 |
AudioState *s = &glob_audio_state; |
410 |
#ifdef DAC
|
411 |
int live = 0; |
412 |
SW *old_sw = NULL;
|
413 |
#endif
|
414 |
|
415 |
ldebug ("open %s, freq %d, nchannels %d, fmt %d\n",
|
416 |
name, as->freq, as->nchannels, as->fmt); |
417 |
|
418 |
if (audio_bug (AUDIO_FUNC, !card || !name || !callback_fn || !as)) {
|
419 |
dolog ("card=%p name=%p callback_fn=%p as=%p\n",
|
420 |
card, name, callback_fn, as); |
421 |
goto fail;
|
422 |
} |
423 |
|
424 |
if (audio_bug (AUDIO_FUNC, audio_validate_settings (as))) {
|
425 |
audio_print_settings (as); |
426 |
goto fail;
|
427 |
} |
428 |
|
429 |
if (audio_bug (AUDIO_FUNC, !s->drv)) {
|
430 |
dolog ("Can not open `%s' (no host audio driver)\n", name);
|
431 |
goto fail;
|
432 |
} |
433 |
|
434 |
if (sw && audio_pcm_info_eq (&sw->info, as)) {
|
435 |
return sw;
|
436 |
} |
437 |
|
438 |
#ifdef DAC
|
439 |
if (conf.plive && sw && (!sw->active && !sw->empty)) {
|
440 |
live = sw->total_hw_samples_mixed; |
441 |
|
442 |
#ifdef DEBUG_PLIVE
|
443 |
dolog ("Replacing voice %s with %d live samples\n", SW_NAME (sw), live);
|
444 |
dolog ("Old %s freq %d, bits %d, channels %d\n",
|
445 |
SW_NAME (sw), sw->info.freq, sw->info.bits, sw->info.nchannels); |
446 |
dolog ("New %s freq %d, bits %d, channels %d\n",
|
447 |
name, |
448 |
freq, |
449 |
(fmt == AUD_FMT_S16 || fmt == AUD_FMT_U16) ? 16 : 8, |
450 |
nchannels); |
451 |
#endif
|
452 |
|
453 |
if (live) {
|
454 |
old_sw = sw; |
455 |
old_sw->callback.fn = NULL;
|
456 |
sw = NULL;
|
457 |
} |
458 |
} |
459 |
#endif
|
460 |
|
461 |
if (!glue (conf.fixed_, TYPE).enabled && sw) {
|
462 |
glue (AUD_close_, TYPE) (card, sw); |
463 |
sw = NULL;
|
464 |
} |
465 |
|
466 |
if (sw) {
|
467 |
HW *hw = sw->hw; |
468 |
|
469 |
if (!hw) {
|
470 |
dolog ("Internal logic error voice `%s' has no hardware store\n",
|
471 |
SW_NAME (sw)); |
472 |
goto fail;
|
473 |
} |
474 |
|
475 |
glue (audio_pcm_sw_fini_, TYPE) (sw); |
476 |
if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, name, as)) {
|
477 |
goto fail;
|
478 |
} |
479 |
} |
480 |
else {
|
481 |
sw = glue (audio_pcm_create_voice_pair_, TYPE) (name, as); |
482 |
if (!sw) {
|
483 |
dolog ("Failed to create voice `%s'\n", name);
|
484 |
return NULL; |
485 |
} |
486 |
} |
487 |
|
488 |
if (sw) {
|
489 |
sw->card = card; |
490 |
sw->vol = nominal_volume; |
491 |
sw->callback.fn = callback_fn; |
492 |
sw->callback.opaque = callback_opaque; |
493 |
|
494 |
#ifdef DAC
|
495 |
if (live) {
|
496 |
int mixed =
|
497 |
(live << old_sw->info.shift) |
498 |
* old_sw->info.bytes_per_second |
499 |
/ sw->info.bytes_per_second; |
500 |
|
501 |
#ifdef DEBUG_PLIVE
|
502 |
dolog ("Silence will be mixed %d\n", mixed);
|
503 |
#endif
|
504 |
sw->total_hw_samples_mixed += mixed; |
505 |
} |
506 |
#endif
|
507 |
|
508 |
#ifdef DEBUG_AUDIO
|
509 |
dolog ("%s\n", name);
|
510 |
audio_pcm_print_info ("hw", &sw->hw->info);
|
511 |
audio_pcm_print_info ("sw", &sw->info);
|
512 |
#endif
|
513 |
} |
514 |
|
515 |
return sw;
|
516 |
|
517 |
fail:
|
518 |
glue (AUD_close_, TYPE) (card, sw); |
519 |
return NULL; |
520 |
} |
521 |
|
522 |
int glue (AUD_is_active_, TYPE) (SW *sw)
|
523 |
{ |
524 |
return sw ? sw->active : 0; |
525 |
} |
526 |
|
527 |
void glue (AUD_init_time_stamp_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts)
|
528 |
{ |
529 |
if (!sw) {
|
530 |
return;
|
531 |
} |
532 |
|
533 |
ts->old_ts = sw->hw->ts_helper; |
534 |
} |
535 |
|
536 |
uint64_t glue (AUD_get_elapsed_usec_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts) |
537 |
{ |
538 |
uint64_t delta, cur_ts, old_ts; |
539 |
|
540 |
if (!sw) {
|
541 |
return 0; |
542 |
} |
543 |
|
544 |
cur_ts = sw->hw->ts_helper; |
545 |
old_ts = ts->old_ts; |
546 |
/* dolog ("cur %lld old %lld\n", cur_ts, old_ts); */
|
547 |
|
548 |
if (cur_ts >= old_ts) {
|
549 |
delta = cur_ts - old_ts; |
550 |
} |
551 |
else {
|
552 |
delta = UINT64_MAX - old_ts + cur_ts; |
553 |
} |
554 |
|
555 |
if (!delta) {
|
556 |
return 0; |
557 |
} |
558 |
|
559 |
return (delta * sw->hw->info.freq) / 1000000; |
560 |
} |
561 |
|
562 |
#undef TYPE
|
563 |
#undef HW
|
564 |
#undef SW
|
565 |
#undef HWBUF
|
566 |
#undef NAME
|