568 lines
14 KiB
C
568 lines
14 KiB
C
/*
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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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static void glue(audio_init_nb_voices_, TYPE)(AudioState *s,
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struct audio_driver *drv)
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{
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int max_voices = glue (drv->max_voices_, TYPE);
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int voice_size = glue (drv->voice_size_, TYPE);
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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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} 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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if (audio_bug(__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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abort();
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}
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if (audio_bug(__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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abort();
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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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g_free(hw->buf_emul);
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g_free (HWBUF);
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HWBUF = NULL;
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}
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static void glue(audio_pcm_hw_alloc_resources_, TYPE)(HW *hw)
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{
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if (glue(audio_get_pdo_, TYPE)(hw->s->dev)->mixing_engine) {
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size_t samples = hw->samples;
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if (audio_bug(__func__, samples == 0)) {
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dolog("Attempted to allocate empty buffer\n");
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abort();
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}
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HWBUF = g_malloc0(sizeof(STSampleBuffer) + sizeof(st_sample) * samples);
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HWBUF->size = samples;
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} else {
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HWBUF = NULL;
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}
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}
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static void glue (audio_pcm_sw_free_resources_, TYPE) (SW *sw)
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{
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g_free (sw->buf);
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if (sw->rate) {
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st_rate_stop (sw->rate);
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}
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sw->buf = NULL;
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sw->rate = NULL;
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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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if (!glue(audio_get_pdo_, TYPE)(sw->s->dev)->mixing_engine) {
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return 0;
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}
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samples = ((int64_t) sw->HWBUF->size << 32) / sw->ratio;
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sw->buf = audio_calloc(__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;
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}
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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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g_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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}
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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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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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if (sw->info.is_float) {
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#ifdef DAC
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sw->conv = mixeng_conv_float[sw->info.nchannels == 2];
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#else
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sw->clip = mixeng_clip_float[sw->info.nchannels == 2];
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#endif
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} else {
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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.is_signed]
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[sw->info.swap_endianness]
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[audio_bits_to_index(sw->info.bits)];
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}
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sw->name = g_strdup (name);
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err = glue (audio_pcm_sw_alloc_resources_, TYPE) (sw);
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if (err) {
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g_free (sw->name);
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sw->name = NULL;
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}
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return err;
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}
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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);
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g_free (sw->name);
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sw->name = NULL;
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}
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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);
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}
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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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}
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static void glue (audio_pcm_hw_gc_, TYPE) (HW **hwp)
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{
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HW *hw = *hwp;
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AudioState *s = hw->s;
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if (!hw->sw_head.lh_first) {
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#ifdef DAC
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audio_detach_capture(hw);
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#endif
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QLIST_REMOVE(hw, entries);
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glue(hw->pcm_ops->fini_, TYPE) (hw);
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glue(s->nb_hw_voices_, TYPE) += 1;
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glue(audio_pcm_hw_free_resources_ , TYPE) (hw);
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g_free(hw);
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*hwp = NULL;
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}
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}
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static HW *glue(audio_pcm_hw_find_any_, TYPE)(AudioState *s, HW *hw)
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{
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return hw ? hw->entries.le_next : glue (s->hw_head_, TYPE).lh_first;
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}
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static HW *glue(audio_pcm_hw_find_any_enabled_, TYPE)(AudioState *s, HW *hw)
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{
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while ((hw = glue(audio_pcm_hw_find_any_, TYPE)(s, hw))) {
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if (hw->enabled) {
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return hw;
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}
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}
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return NULL;
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}
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static HW *glue(audio_pcm_hw_find_specific_, TYPE)(AudioState *s, HW *hw,
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struct audsettings *as)
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{
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while ((hw = glue(audio_pcm_hw_find_any_, TYPE)(s, hw))) {
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if (audio_pcm_info_eq (&hw->info, as)) {
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return hw;
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}
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}
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return NULL;
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}
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static HW *glue(audio_pcm_hw_add_new_, TYPE)(AudioState *s,
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struct audsettings *as)
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{
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HW *hw;
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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;
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}
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if (audio_bug(__func__, !drv)) {
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dolog ("No host audio driver\n");
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abort();
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}
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if (audio_bug(__func__, !drv->pcm_ops)) {
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dolog ("Host audio driver without pcm_ops\n");
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abort();
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}
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hw = audio_calloc(__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;
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}
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hw->s = s;
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hw->pcm_ops = drv->pcm_ops;
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QLIST_INIT (&hw->sw_head);
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#ifdef DAC
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QLIST_INIT (&hw->cap_head);
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#endif
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if (glue (hw->pcm_ops->init_, TYPE) (hw, as, s->drv_opaque)) {
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g_free(hw);
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return NULL;
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}
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if (audio_bug(__func__, hw->samples <= 0)) {
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dolog("hw->samples=%zd\n", hw->samples);
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abort();
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}
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if (hw->info.is_float) {
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#ifdef DAC
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hw->clip = mixeng_clip_float[hw->info.nchannels == 2];
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#else
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hw->conv = mixeng_conv_float[hw->info.nchannels == 2];
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#endif
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} else {
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#ifdef DAC
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hw->clip = mixeng_clip
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#else
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hw->conv = mixeng_conv
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#endif
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[hw->info.nchannels == 2]
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[hw->info.is_signed]
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[hw->info.swap_endianness]
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[audio_bits_to_index(hw->info.bits)];
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}
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glue(audio_pcm_hw_alloc_resources_, TYPE)(hw);
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QLIST_INSERT_HEAD (&s->glue (hw_head_, TYPE), hw, entries);
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glue (s->nb_hw_voices_, TYPE) -= 1;
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#ifdef DAC
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audio_attach_capture (hw);
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#endif
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return hw;
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}
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AudiodevPerDirectionOptions *glue(audio_get_pdo_, TYPE)(Audiodev *dev)
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{
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switch (dev->driver) {
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case AUDIODEV_DRIVER_NONE:
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return dev->u.none.TYPE;
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case AUDIODEV_DRIVER_ALSA:
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return qapi_AudiodevAlsaPerDirectionOptions_base(dev->u.alsa.TYPE);
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case AUDIODEV_DRIVER_COREAUDIO:
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return qapi_AudiodevCoreaudioPerDirectionOptions_base(
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dev->u.coreaudio.TYPE);
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case AUDIODEV_DRIVER_DBUS:
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return dev->u.dbus.TYPE;
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case AUDIODEV_DRIVER_DSOUND:
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return dev->u.dsound.TYPE;
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case AUDIODEV_DRIVER_JACK:
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return qapi_AudiodevJackPerDirectionOptions_base(dev->u.jack.TYPE);
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case AUDIODEV_DRIVER_OSS:
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return qapi_AudiodevOssPerDirectionOptions_base(dev->u.oss.TYPE);
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case AUDIODEV_DRIVER_PA:
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return qapi_AudiodevPaPerDirectionOptions_base(dev->u.pa.TYPE);
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case AUDIODEV_DRIVER_SDL:
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return qapi_AudiodevSdlPerDirectionOptions_base(dev->u.sdl.TYPE);
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case AUDIODEV_DRIVER_SPICE:
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return dev->u.spice.TYPE;
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case AUDIODEV_DRIVER_WAV:
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return dev->u.wav.TYPE;
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case AUDIODEV_DRIVER__MAX:
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break;
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}
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abort();
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}
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static HW *glue(audio_pcm_hw_add_, TYPE)(AudioState *s, struct audsettings *as)
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{
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HW *hw;
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AudiodevPerDirectionOptions *pdo = glue(audio_get_pdo_, TYPE)(s->dev);
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if (!pdo->mixing_engine || pdo->fixed_settings) {
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hw = glue(audio_pcm_hw_add_new_, TYPE)(s, as);
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if (!pdo->mixing_engine || hw) {
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return hw;
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}
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}
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hw = glue(audio_pcm_hw_find_specific_, TYPE)(s, NULL, as);
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if (hw) {
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return hw;
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}
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hw = glue(audio_pcm_hw_add_new_, TYPE)(s, as);
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if (hw) {
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return hw;
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}
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return glue(audio_pcm_hw_find_any_, TYPE)(s, NULL);
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}
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static SW *glue(audio_pcm_create_voice_pair_, TYPE)(
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AudioState *s,
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const char *sw_name,
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struct audsettings *as
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)
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{
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SW *sw;
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HW *hw;
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struct audsettings hw_as;
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AudiodevPerDirectionOptions *pdo = glue(audio_get_pdo_, TYPE)(s->dev);
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if (pdo->fixed_settings) {
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hw_as = audiodev_to_audsettings(pdo);
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} else {
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hw_as = *as;
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}
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sw = audio_calloc(__func__, 1, sizeof(*sw));
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if (!sw) {
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dolog ("Could not allocate soft voice `%s' (%zu bytes)\n",
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sw_name ? sw_name : "unknown", sizeof (*sw));
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goto err1;
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}
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sw->s = s;
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hw = glue(audio_pcm_hw_add_, TYPE)(s, &hw_as);
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if (!hw) {
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goto err2;
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}
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glue (audio_pcm_hw_add_sw_, TYPE) (hw, sw);
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if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, sw_name, as)) {
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goto err3;
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}
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return sw;
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err3:
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glue (audio_pcm_hw_del_sw_, TYPE) (sw);
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glue (audio_pcm_hw_gc_, TYPE) (&hw);
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err2:
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g_free (sw);
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err1:
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return NULL;
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}
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static void glue (audio_close_, TYPE) (SW *sw)
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{
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glue (audio_pcm_sw_fini_, TYPE) (sw);
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glue (audio_pcm_hw_del_sw_, TYPE) (sw);
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glue (audio_pcm_hw_gc_, TYPE) (&sw->hw);
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g_free (sw);
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}
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void glue (AUD_close_, TYPE) (QEMUSoundCard *card, SW *sw)
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{
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if (sw) {
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if (audio_bug(__func__, !card)) {
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dolog ("card=%p\n", card);
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abort();
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}
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glue (audio_close_, TYPE) (sw);
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}
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}
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SW *glue (AUD_open_, TYPE) (
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QEMUSoundCard *card,
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SW *sw,
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const char *name,
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void *callback_opaque ,
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audio_callback_fn callback_fn,
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struct audsettings *as
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)
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{
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AudioState *s;
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AudiodevPerDirectionOptions *pdo;
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if (audio_bug(__func__, !card || !name || !callback_fn || !as)) {
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dolog ("card=%p name=%p callback_fn=%p as=%p\n",
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card, name, callback_fn, as);
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abort();
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}
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s = card->state;
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pdo = glue(audio_get_pdo_, TYPE)(s->dev);
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ldebug ("open %s, freq %d, nchannels %d, fmt %d\n",
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name, as->freq, as->nchannels, as->fmt);
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if (audio_bug(__func__, audio_validate_settings(as))) {
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audio_print_settings (as);
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abort();
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}
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if (audio_bug(__func__, !s->drv)) {
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dolog ("Can not open `%s' (no host audio driver)\n", name);
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abort();
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}
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if (sw && audio_pcm_info_eq (&sw->info, as)) {
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return sw;
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}
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if (!pdo->fixed_settings && sw) {
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glue (AUD_close_, TYPE) (card, sw);
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sw = NULL;
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}
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if (sw) {
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HW *hw = sw->hw;
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if (!hw) {
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dolog ("Internal logic error voice `%s' has no hardware store\n",
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SW_NAME (sw));
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goto fail;
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}
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glue (audio_pcm_sw_fini_, TYPE) (sw);
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if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, name, as)) {
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goto fail;
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}
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} else {
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sw = glue(audio_pcm_create_voice_pair_, TYPE)(s, name, as);
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if (!sw) {
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dolog ("Failed to create voice `%s'\n", name);
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return NULL;
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}
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}
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sw->card = card;
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sw->vol = nominal_volume;
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sw->callback.fn = callback_fn;
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sw->callback.opaque = callback_opaque;
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#ifdef DEBUG_AUDIO
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dolog ("%s\n", name);
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audio_pcm_print_info ("hw", &sw->hw->info);
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audio_pcm_print_info ("sw", &sw->info);
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#endif
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return sw;
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fail:
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glue (AUD_close_, TYPE) (card, sw);
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return NULL;
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}
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int glue (AUD_is_active_, TYPE) (SW *sw)
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{
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return sw ? sw->active : 0;
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}
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void glue (AUD_init_time_stamp_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts)
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{
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if (!sw) {
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return;
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}
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ts->old_ts = sw->hw->ts_helper;
|
|
}
|
|
|
|
uint64_t glue (AUD_get_elapsed_usec_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts)
|
|
{
|
|
uint64_t delta, cur_ts, old_ts;
|
|
|
|
if (!sw) {
|
|
return 0;
|
|
}
|
|
|
|
cur_ts = sw->hw->ts_helper;
|
|
old_ts = ts->old_ts;
|
|
/* dolog ("cur %" PRId64 " old %" PRId64 "\n", cur_ts, old_ts); */
|
|
|
|
if (cur_ts >= old_ts) {
|
|
delta = cur_ts - old_ts;
|
|
} else {
|
|
delta = UINT64_MAX - old_ts + cur_ts;
|
|
}
|
|
|
|
if (!delta) {
|
|
return 0;
|
|
}
|
|
|
|
return muldiv64 (delta, sw->hw->info.freq, 1000000);
|
|
}
|
|
|
|
#undef TYPE
|
|
#undef HW
|
|
#undef SW
|
|
#undef HWBUF
|
|
#undef NAME
|