diff options
Diffstat (limited to 'audio')
| -rw-r--r-- | audio/audio.c | 216 | ||||
| -rw-r--r-- | audio/audio_int.h | 43 | ||||
| -rw-r--r-- | audio/audio_template.h | 1 |
3 files changed, 251 insertions, 9 deletions
diff --git a/audio/audio.c b/audio/audio.c index e99fcd0694..e29a1e15eb 100644 --- a/audio/audio.c +++ b/audio/audio.c @@ -573,6 +573,25 @@ size_t audio_pcm_hw_clip_out(HWVoiceOut *hw, void *pcm_buf, return clipped; } +static void audio_pcm_hw_clip_out2(HWVoiceOut *hw, void *pcm_buf, size_t len) +{ + size_t clipped = 0; + size_t pos = hw->rpos; + + while (len) { + st_sample *src = hw->mix_buf + pos; + uint8_t *dst = advance(pcm_buf, clipped << hw->info.shift); + size_t samples_till_end_of_buf = hw->samples - pos; + size_t samples_to_clip = MIN(len, samples_till_end_of_buf); + + hw->clip(dst, src, samples_to_clip); + + pos = (pos + samples_to_clip) % hw->samples; + len -= samples_to_clip; + clipped += samples_to_clip; + } +} + /* * Soft voice (capture) */ @@ -1050,6 +1069,36 @@ static void audio_capture_mix_and_clear(HWVoiceOut *hw, size_t rpos, mixeng_clear(hw->mix_buf, samples - n); } +static size_t audio_pcm_hw_run_out(HWVoiceOut *hw, size_t live) +{ + size_t clipped = 0; + + while (live) { + size_t size, decr, proc; + void *buf = hw->pcm_ops->get_buffer_out(hw, &size); + if (!buf) { + /* retrying will likely won't help, drop everything. */ + hw->rpos = (hw->rpos + live) % hw->samples; + return clipped + live; + } + + decr = MIN(size >> hw->info.shift, live); + audio_pcm_hw_clip_out2(hw, buf, decr); + proc = hw->pcm_ops->put_buffer_out(hw, buf, decr << hw->info.shift) >> + hw->info.shift; + + live -= proc; + clipped += proc; + hw->rpos = (hw->rpos + proc) % hw->samples; + + if (proc == 0 || proc < decr) { + break; + } + } + + return clipped; +} + static void audio_run_out (AudioState *s) { HWVoiceOut *hw = NULL; @@ -1097,7 +1146,11 @@ static void audio_run_out (AudioState *s) } prev_rpos = hw->rpos; - played = hw->pcm_ops->run_out (hw, live); + if (hw->pcm_ops->run_out) { + played = hw->pcm_ops->run_out(hw, live); + } else { + played = audio_pcm_hw_run_out(hw, live); + } replay_audio_out(&played); if (audio_bug(__func__, hw->rpos >= hw->samples)) { dolog("hw->rpos=%zu hw->samples=%zu played=%zu\n", @@ -1156,6 +1209,35 @@ static void audio_run_out (AudioState *s) } } +static size_t audio_pcm_hw_run_in(HWVoiceIn *hw, size_t samples) +{ + size_t conv = 0; + + while (samples) { + size_t proc; + size_t size = samples << hw->info.shift; + void *buf = hw->pcm_ops->get_buffer_in(hw, &size); + + assert((size & hw->info.align) == 0); + if (size == 0) { + hw->pcm_ops->put_buffer_in(hw, buf, size); + break; + } + + proc = MIN(size >> hw->info.shift, + hw->samples - hw->wpos); + + hw->conv(hw->conv_buf + hw->wpos, buf, proc); + hw->wpos = (hw->wpos + proc) % hw->samples; + + samples -= proc; + conv += proc; + hw->pcm_ops->put_buffer_in(hw, buf, proc << hw->info.shift); + } + + return conv; +} + static void audio_run_in (AudioState *s) { HWVoiceIn *hw = NULL; @@ -1165,7 +1247,12 @@ static void audio_run_in (AudioState *s) size_t captured = 0, min; if (replay_mode != REPLAY_MODE_PLAY) { - captured = hw->pcm_ops->run_in(hw); + if (hw->pcm_ops->run_in) { + captured = hw->pcm_ops->run_in(hw); + } else { + captured = audio_pcm_hw_run_in( + hw, hw->samples - audio_pcm_hw_get_live_in(hw)); + } } replay_audio_in(&captured, hw->conv_buf, &hw->wpos, hw->samples); @@ -1259,12 +1346,137 @@ void audio_run(AudioState *s, const char *msg) #endif } +void *audio_generic_get_buffer_in(HWVoiceIn *hw, size_t *size) +{ + ssize_t start; + + if (unlikely(!hw->buf_emul)) { + size_t calc_size = hw->samples << hw->info.shift; + hw->buf_emul = g_malloc(calc_size); + hw->size_emul = calc_size; + hw->pos_emul = hw->pending_emul = 0; + } + + while (hw->pending_emul < hw->size_emul) { + size_t read_len = MIN(hw->size_emul - hw->pos_emul, + hw->size_emul - hw->pending_emul); + size_t read = hw->pcm_ops->read(hw, hw->buf_emul + hw->pos_emul, + read_len); + hw->pending_emul += read; + if (read < read_len) { + break; + } + } + + start = ((ssize_t) hw->pos_emul) - hw->pending_emul; + if (start < 0) { + start += hw->size_emul; + } + assert(start >= 0 && start < hw->size_emul); + + *size = MIN(hw->pending_emul, hw->size_emul - start); + return hw->buf_emul + start; +} + +void audio_generic_put_buffer_in(HWVoiceIn *hw, void *buf, size_t size) +{ + assert(size <= hw->pending_emul); + hw->pending_emul -= size; +} + +void *audio_generic_get_buffer_out(HWVoiceOut *hw, size_t *size) +{ + if (unlikely(!hw->buf_emul)) { + size_t calc_size = hw->samples << hw->info.shift; + + hw->buf_emul = g_malloc(calc_size); + hw->size_emul = calc_size; + hw->pos_emul = hw->pending_emul = 0; + } + + *size = MIN(hw->size_emul - hw->pending_emul, + hw->size_emul - hw->pos_emul); + return hw->buf_emul + hw->pos_emul; +} + +size_t audio_generic_put_buffer_out_nowrite(HWVoiceOut *hw, void *buf, + size_t size) +{ + assert(buf == hw->buf_emul + hw->pos_emul && + size + hw->pending_emul <= hw->size_emul); + + hw->pending_emul += size; + hw->pos_emul = (hw->pos_emul + size) % hw->size_emul; + + return size; +} + +size_t audio_generic_put_buffer_out(HWVoiceOut *hw, void *buf, size_t size) +{ + audio_generic_put_buffer_out_nowrite(hw, buf, size); + + while (hw->pending_emul) { + size_t write_len, written; + ssize_t start = ((ssize_t) hw->pos_emul) - hw->pending_emul; + if (start < 0) { + start += hw->size_emul; + } + assert(start >= 0 && start < hw->size_emul); + + write_len = MIN(hw->pending_emul, hw->size_emul - start); + + written = hw->pcm_ops->write(hw, hw->buf_emul + start, write_len); + hw->pending_emul -= written; + + if (written < write_len) { + break; + } + } + + /* + * fake we have written everything. non-written data remain in pending_emul, + * so we do not have to clip them multiple times + */ + return size; +} + +size_t audio_generic_write(HWVoiceOut *hw, void *buf, size_t size) +{ + size_t dst_size, copy_size; + void *dst = hw->pcm_ops->get_buffer_out(hw, &dst_size); + copy_size = MIN(size, dst_size); + + memcpy(dst, buf, copy_size); + return hw->pcm_ops->put_buffer_out(hw, buf, copy_size); +} + +size_t audio_generic_read(HWVoiceIn *hw, void *buf, size_t size) +{ + size_t dst_size, copy_size; + void *dst = hw->pcm_ops->get_buffer_in(hw, &dst_size); + copy_size = MIN(size, dst_size); + + memcpy(dst, buf, copy_size); + hw->pcm_ops->put_buffer_in(hw, buf, copy_size); + return copy_size; +} + + static int audio_driver_init(AudioState *s, struct audio_driver *drv, bool msg, Audiodev *dev) { s->drv_opaque = drv->init(dev); if (s->drv_opaque) { + if (!drv->pcm_ops->get_buffer_in) { + drv->pcm_ops->get_buffer_in = audio_generic_get_buffer_in; + drv->pcm_ops->put_buffer_in = audio_generic_put_buffer_in; + } + if (!drv->pcm_ops->get_buffer_out) { + drv->pcm_ops->get_buffer_out = audio_generic_get_buffer_out; + drv->pcm_ops->put_buffer_out = audio_generic_put_buffer_out; + } + audio_init_nb_voices_out(s, drv); audio_init_nb_voices_in(s, drv); s->drv = drv; diff --git a/audio/audio_int.h b/audio/audio_int.h index a674c5374a..8fb1ca8a8d 100644 --- a/audio/audio_int.h +++ b/audio/audio_int.h @@ -65,6 +65,8 @@ typedef struct HWVoiceOut { uint64_t ts_helper; struct st_sample *mix_buf; + void *buf_emul; + size_t pos_emul, pending_emul, size_emul; size_t samples; QLIST_HEAD (sw_out_listhead, SWVoiceOut) sw_head; @@ -87,6 +89,8 @@ typedef struct HWVoiceIn { uint64_t ts_helper; struct st_sample *conv_buf; + void *buf_emul; + size_t pos_emul, pending_emul, size_emul; size_t samples; QLIST_HEAD (sw_in_listhead, SWVoiceIn) sw_head; @@ -147,17 +151,42 @@ struct audio_driver { }; struct audio_pcm_ops { - int (*init_out)(HWVoiceOut *hw, struct audsettings *as, void *drv_opaque); - void (*fini_out)(HWVoiceOut *hw); + int (*init_out)(HWVoiceOut *hw, audsettings *as, void *drv_opaque); + void (*fini_out)(HWVoiceOut *hw); size_t (*run_out)(HWVoiceOut *hw, size_t live); - int (*ctl_out) (HWVoiceOut *hw, int cmd, ...); - - int (*init_in) (HWVoiceIn *hw, struct audsettings *as, void *drv_opaque); - void (*fini_in) (HWVoiceIn *hw); + size_t (*write) (HWVoiceOut *hw, void *buf, size_t size); + /* + * get a buffer that after later can be passed to put_buffer_out; optional + * returns the buffer, and writes it's size to size (in bytes) + * this is unrelated to the above buffer_size_out function + */ + void *(*get_buffer_out)(HWVoiceOut *hw, size_t *size); + /* + * put back the buffer returned by get_buffer_out; optional + * buf must be equal the pointer returned by get_buffer_out, + * size may be smaller + */ + size_t (*put_buffer_out)(HWVoiceOut *hw, void *buf, size_t size); + int (*ctl_out) (HWVoiceOut *hw, int cmd, ...); + + int (*init_in) (HWVoiceIn *hw, audsettings *as, void *drv_opaque); + void (*fini_in) (HWVoiceIn *hw); size_t (*run_in)(HWVoiceIn *hw); - int (*ctl_in) (HWVoiceIn *hw, int cmd, ...); + size_t (*read) (HWVoiceIn *hw, void *buf, size_t size); + void *(*get_buffer_in)(HWVoiceIn *hw, size_t *size); + void (*put_buffer_in)(HWVoiceIn *hw, void *buf, size_t size); + int (*ctl_in) (HWVoiceIn *hw, int cmd, ...); }; +void *audio_generic_get_buffer_in(HWVoiceIn *hw, size_t *size); +void audio_generic_put_buffer_in(HWVoiceIn *hw, void *buf, size_t size); +void *audio_generic_get_buffer_out(HWVoiceOut *hw, size_t *size); +size_t audio_generic_put_buffer_out(HWVoiceOut *hw, void *buf, size_t size); +size_t audio_generic_put_buffer_out_nowrite(HWVoiceOut *hw, void *buf, + size_t size); +size_t audio_generic_write(HWVoiceOut *hw, void *buf, size_t size); +size_t audio_generic_read(HWVoiceIn *hw, void *buf, size_t size); + struct capture_callback { struct audio_capture_ops ops; void *opaque; diff --git a/audio/audio_template.h b/audio/audio_template.h index 2562bf5f00..ff4a173f18 100644 --- a/audio/audio_template.h +++ b/audio/audio_template.h @@ -71,6 +71,7 @@ static void glue(audio_init_nb_voices_, TYPE)(AudioState *s, static void glue (audio_pcm_hw_free_resources_, TYPE) (HW *hw) { + g_free(hw->buf_emul); g_free (HWBUF); HWBUF = NULL; } |