--- /dev/null
+/*
+ * QEMU Audio subsystem header
+ *
+ * Copyright (c) 2005 Vassili Karpov (malc)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifdef DAC
+#define NAME "playback"
+#define HWBUF hw->mix_buf
+#define TYPE out
+#define HW HWVoiceOut
+#define SW SWVoiceOut
+#else
+#define NAME "capture"
+#define TYPE in
+#define HW HWVoiceIn
+#define SW SWVoiceIn
+#define HWBUF hw->conv_buf
+#endif
+
+static void glue (audio_init_nb_voices_, TYPE) (struct audio_driver *drv)
+{
+ AudioState *s = &glob_audio_state;
+ int max_voices = glue (drv->max_voices_, TYPE);
+ int voice_size = glue (drv->voice_size_, TYPE);
+
+ if (glue (s->nb_hw_voices_, TYPE) > max_voices) {
+ if (!max_voices) {
+#ifdef DAC
+ dolog ("Driver `%s' does not support " NAME "\n", drv->name);
+#endif
+ }
+ else {
+ dolog ("Driver `%s' does not support %d " NAME " voices, max %d\n",
+ drv->name,
+ glue (s->nb_hw_voices_, TYPE),
+ max_voices);
+ }
+ glue (s->nb_hw_voices_, TYPE) = max_voices;
+ }
+
+ if (audio_bug (AUDIO_FUNC, !voice_size && max_voices)) {
+ dolog ("drv=`%s' voice_size=0 max_voices=%d\n",
+ drv->name, max_voices);
+ glue (s->nb_hw_voices_, TYPE) = 0;
+ }
+
+ if (audio_bug (AUDIO_FUNC, voice_size && !max_voices)) {
+ dolog ("drv=`%s' voice_size=%d max_voices=0\n",
+ drv->name, voice_size);
+ }
+}
+
+static void glue (audio_pcm_hw_free_resources_, TYPE) (HW *hw)
+{
+ g_free (HWBUF);
+ HWBUF = NULL;
+}
+
+static int glue (audio_pcm_hw_alloc_resources_, TYPE) (HW *hw)
+{
+ HWBUF = audio_calloc (AUDIO_FUNC, hw->samples, sizeof (struct st_sample));
+ if (!HWBUF) {
+ dolog ("Could not allocate " NAME " buffer (%d samples)\n",
+ hw->samples);
+ return -1;
+ }
+
+ return 0;
+}
+
+static void glue (audio_pcm_sw_free_resources_, TYPE) (SW *sw)
+{
+ g_free (sw->buf);
+
+ if (sw->rate) {
+ st_rate_stop (sw->rate);
+ }
+
+ sw->buf = NULL;
+ sw->rate = NULL;
+}
+
+static int glue (audio_pcm_sw_alloc_resources_, TYPE) (SW *sw)
+{
+ int samples;
+
+ samples = ((int64_t) sw->hw->samples << 32) / sw->ratio;
+
+ sw->buf = audio_calloc (AUDIO_FUNC, samples, sizeof (struct st_sample));
+ if (!sw->buf) {
+ dolog ("Could not allocate buffer for `%s' (%d samples)\n",
+ SW_NAME (sw), samples);
+ return -1;
+ }
+
+#ifdef DAC
+ sw->rate = st_rate_start (sw->info.freq, sw->hw->info.freq);
+#else
+ sw->rate = st_rate_start (sw->hw->info.freq, sw->info.freq);
+#endif
+ if (!sw->rate) {
+ g_free (sw->buf);
+ sw->buf = NULL;
+ return -1;
+ }
+ return 0;
+}
+
+static int glue (audio_pcm_sw_init_, TYPE) (
+ SW *sw,
+ HW *hw,
+ const char *name,
+ struct audsettings *as
+ )
+{
+ int err;
+
+ audio_pcm_init_info (&sw->info, as);
+ sw->hw = hw;
+ sw->active = 0;
+#ifdef DAC
+ sw->ratio = ((int64_t) sw->hw->info.freq << 32) / sw->info.freq;
+ sw->total_hw_samples_mixed = 0;
+ sw->empty = 1;
+#else
+ sw->ratio = ((int64_t) sw->info.freq << 32) / sw->hw->info.freq;
+#endif
+
+#ifdef DAC
+ sw->conv = mixeng_conv
+#else
+ sw->clip = mixeng_clip
+#endif
+ [sw->info.nchannels == 2]
+ [sw->info.sign]
+ [sw->info.swap_endianness]
+ [audio_bits_to_index (sw->info.bits)];
+
+ sw->name = g_strdup (name);
+ err = glue (audio_pcm_sw_alloc_resources_, TYPE) (sw);
+ if (err) {
+ g_free (sw->name);
+ sw->name = NULL;
+ }
+ return err;
+}
+
+static void glue (audio_pcm_sw_fini_, TYPE) (SW *sw)
+{
+ glue (audio_pcm_sw_free_resources_, TYPE) (sw);
+ g_free (sw->name);
+ sw->name = NULL;
+}
+
+static void glue (audio_pcm_hw_add_sw_, TYPE) (HW *hw, SW *sw)
+{
+ QLIST_INSERT_HEAD (&hw->sw_head, sw, entries);
+}
+
+static void glue (audio_pcm_hw_del_sw_, TYPE) (SW *sw)
+{
+ QLIST_REMOVE (sw, entries);
+}
+
+static void glue (audio_pcm_hw_gc_, TYPE) (HW **hwp)
+{
+ AudioState *s = &glob_audio_state;
+ HW *hw = *hwp;
+
+ if (!hw->sw_head.lh_first) {
+#ifdef DAC
+ audio_detach_capture (hw);
+#endif
+ QLIST_REMOVE (hw, entries);
+ glue (hw->pcm_ops->fini_, TYPE) (hw);
+ glue (s->nb_hw_voices_, TYPE) += 1;
+ glue (audio_pcm_hw_free_resources_ ,TYPE) (hw);
+ g_free (hw);
+ *hwp = NULL;
+ }
+}
+
+static HW *glue (audio_pcm_hw_find_any_, TYPE) (HW *hw)
+{
+ AudioState *s = &glob_audio_state;
+ return hw ? hw->entries.le_next : glue (s->hw_head_, TYPE).lh_first;
+}
+
+static HW *glue (audio_pcm_hw_find_any_enabled_, TYPE) (HW *hw)
+{
+ while ((hw = glue (audio_pcm_hw_find_any_, TYPE) (hw))) {
+ if (hw->enabled) {
+ return hw;
+ }
+ }
+ return NULL;
+}
+
+static HW *glue (audio_pcm_hw_find_specific_, TYPE) (
+ HW *hw,
+ struct audsettings *as
+ )
+{
+ while ((hw = glue (audio_pcm_hw_find_any_, TYPE) (hw))) {
+ if (audio_pcm_info_eq (&hw->info, as)) {
+ return hw;
+ }
+ }
+ return NULL;
+}
+
+static HW *glue (audio_pcm_hw_add_new_, TYPE) (struct audsettings *as)
+{
+ HW *hw;
+ AudioState *s = &glob_audio_state;
+ struct audio_driver *drv = s->drv;
+
+ if (!glue (s->nb_hw_voices_, TYPE)) {
+ return NULL;
+ }
+
+ if (audio_bug (AUDIO_FUNC, !drv)) {
+ dolog ("No host audio driver\n");
+ return NULL;
+ }
+
+ if (audio_bug (AUDIO_FUNC, !drv->pcm_ops)) {
+ dolog ("Host audio driver without pcm_ops\n");
+ return NULL;
+ }
+
+ hw = audio_calloc (AUDIO_FUNC, 1, glue (drv->voice_size_, TYPE));
+ if (!hw) {
+ dolog ("Can not allocate voice `%s' size %d\n",
+ drv->name, glue (drv->voice_size_, TYPE));
+ return NULL;
+ }
+
+ hw->pcm_ops = drv->pcm_ops;
+ hw->ctl_caps = drv->ctl_caps;
+
+ QLIST_INIT (&hw->sw_head);
+#ifdef DAC
+ QLIST_INIT (&hw->cap_head);
+#endif
+ if (glue (hw->pcm_ops->init_, TYPE) (hw, as, s->drv_opaque)) {
+ goto err0;
+ }
+
+ if (audio_bug (AUDIO_FUNC, hw->samples <= 0)) {
+ dolog ("hw->samples=%d\n", hw->samples);
+ goto err1;
+ }
+
+#ifdef DAC
+ hw->clip = mixeng_clip
+#else
+ hw->conv = mixeng_conv
+#endif
+ [hw->info.nchannels == 2]
+ [hw->info.sign]
+ [hw->info.swap_endianness]
+ [audio_bits_to_index (hw->info.bits)];
+
+ if (glue (audio_pcm_hw_alloc_resources_, TYPE) (hw)) {
+ goto err1;
+ }
+
+ QLIST_INSERT_HEAD (&s->glue (hw_head_, TYPE), hw, entries);
+ glue (s->nb_hw_voices_, TYPE) -= 1;
+#ifdef DAC
+ audio_attach_capture (hw);
+#endif
+ return hw;
+
+ err1:
+ glue (hw->pcm_ops->fini_, TYPE) (hw);
+ err0:
+ g_free (hw);
+ return NULL;
+}
+
+static HW *glue (audio_pcm_hw_add_, TYPE) (struct audsettings *as)
+{
+ HW *hw;
+
+ if (glue (conf.fixed_, TYPE).enabled && glue (conf.fixed_, TYPE).greedy) {
+ hw = glue (audio_pcm_hw_add_new_, TYPE) (as);
+ if (hw) {
+ return hw;
+ }
+ }
+
+ hw = glue (audio_pcm_hw_find_specific_, TYPE) (NULL, as);
+ if (hw) {
+ return hw;
+ }
+
+ hw = glue (audio_pcm_hw_add_new_, TYPE) (as);
+ if (hw) {
+ return hw;
+ }
+
+ return glue (audio_pcm_hw_find_any_, TYPE) (NULL);
+}
+
+static SW *glue (audio_pcm_create_voice_pair_, TYPE) (
+ const char *sw_name,
+ struct audsettings *as
+ )
+{
+ SW *sw;
+ HW *hw;
+ struct audsettings hw_as;
+
+ if (glue (conf.fixed_, TYPE).enabled) {
+ hw_as = glue (conf.fixed_, TYPE).settings;
+ }
+ else {
+ hw_as = *as;
+ }
+
+ sw = audio_calloc (AUDIO_FUNC, 1, sizeof (*sw));
+ if (!sw) {
+ dolog ("Could not allocate soft voice `%s' (%zu bytes)\n",
+ sw_name ? sw_name : "unknown", sizeof (*sw));
+ goto err1;
+ }
+
+ hw = glue (audio_pcm_hw_add_, TYPE) (&hw_as);
+ if (!hw) {
+ goto err2;
+ }
+
+ glue (audio_pcm_hw_add_sw_, TYPE) (hw, sw);
+
+ if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, sw_name, as)) {
+ goto err3;
+ }
+
+ return sw;
+
+err3:
+ glue (audio_pcm_hw_del_sw_, TYPE) (sw);
+ glue (audio_pcm_hw_gc_, TYPE) (&hw);
+err2:
+ g_free (sw);
+err1:
+ return NULL;
+}
+
+static void glue (audio_close_, TYPE) (SW *sw)
+{
+ glue (audio_pcm_sw_fini_, TYPE) (sw);
+ glue (audio_pcm_hw_del_sw_, TYPE) (sw);
+ glue (audio_pcm_hw_gc_, TYPE) (&sw->hw);
+ g_free (sw);
+}
+
+void glue (AUD_close_, TYPE) (QEMUSoundCard *card, SW *sw)
+{
+ if (sw) {
+ if (audio_bug (AUDIO_FUNC, !card)) {
+ dolog ("card=%p\n", card);
+ return;
+ }
+
+ glue (audio_close_, TYPE) (sw);
+ }
+}
+
+SW *glue (AUD_open_, TYPE) (
+ QEMUSoundCard *card,
+ SW *sw,
+ const char *name,
+ void *callback_opaque ,
+ audio_callback_fn callback_fn,
+ struct audsettings *as
+ )
+{
+ AudioState *s = &glob_audio_state;
+
+ if (audio_bug (AUDIO_FUNC, !card || !name || !callback_fn || !as)) {
+ dolog ("card=%p name=%p callback_fn=%p as=%p\n",
+ card, name, callback_fn, as);
+ goto fail;
+ }
+
+ ldebug ("open %s, freq %d, nchannels %d, fmt %d\n",
+ name, as->freq, as->nchannels, as->fmt);
+
+ if (audio_bug (AUDIO_FUNC, audio_validate_settings (as))) {
+ audio_print_settings (as);
+ goto fail;
+ }
+
+ if (audio_bug (AUDIO_FUNC, !s->drv)) {
+ dolog ("Can not open `%s' (no host audio driver)\n", name);
+ goto fail;
+ }
+
+ if (sw && audio_pcm_info_eq (&sw->info, as)) {
+ return sw;
+ }
+
+ if (!glue (conf.fixed_, TYPE).enabled && sw) {
+ glue (AUD_close_, TYPE) (card, sw);
+ sw = NULL;
+ }
+
+ if (sw) {
+ HW *hw = sw->hw;
+
+ if (!hw) {
+ dolog ("Internal logic error voice `%s' has no hardware store\n",
+ SW_NAME (sw));
+ goto fail;
+ }
+
+ glue (audio_pcm_sw_fini_, TYPE) (sw);
+ if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, name, as)) {
+ goto fail;
+ }
+ }
+ else {
+ sw = glue (audio_pcm_create_voice_pair_, TYPE) (name, as);
+ if (!sw) {
+ dolog ("Failed to create voice `%s'\n", name);
+ return NULL;
+ }
+ }
+
+ sw->card = card;
+ sw->vol = nominal_volume;
+ sw->callback.fn = callback_fn;
+ sw->callback.opaque = callback_opaque;
+
+#ifdef DEBUG_AUDIO
+ dolog ("%s\n", name);
+ audio_pcm_print_info ("hw", &sw->hw->info);
+ audio_pcm_print_info ("sw", &sw->info);
+#endif
+
+ return sw;
+
+ fail:
+ glue (AUD_close_, TYPE) (card, sw);
+ return NULL;
+}
+
+int glue (AUD_is_active_, TYPE) (SW *sw)
+{
+ return sw ? sw->active : 0;
+}
+
+void glue (AUD_init_time_stamp_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts)
+{
+ if (!sw) {
+ return;
+ }
+
+ 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
Code Review / kvmfornfv.git / blobdiff