diff options
Diffstat (limited to 'qemu/audio/audio_template.h')
| -rw-r--r-- | qemu/audio/audio_template.h | 514 |
1 files changed, 514 insertions, 0 deletions
diff --git a/qemu/audio/audio_template.h b/qemu/audio/audio_template.h new file mode 100644 index 000000000..99b27b285 --- /dev/null +++ b/qemu/audio/audio_template.h @@ -0,0 +1,514 @@ +/* + * 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 |