diff options
Diffstat (limited to 'audio')
| -rw-r--r-- | audio/spiceaudio.c | 116 |
1 files changed, 42 insertions, 74 deletions
diff --git a/audio/spiceaudio.c b/audio/spiceaudio.c index 26873c7f22..ff4e4dcbb0 100644 --- a/audio/spiceaudio.c +++ b/audio/spiceaudio.c @@ -51,7 +51,7 @@ typedef struct SpiceVoiceOut { SpiceRateCtl rate; int active; uint32_t *frame; - uint32_t *fpos; + uint32_t fpos; uint32_t fsize; } SpiceVoiceOut; @@ -60,7 +60,6 @@ typedef struct SpiceVoiceIn { SpiceRecordInstance sin; SpiceRateCtl rate; int active; - uint32_t samples[LINE_IN_SAMPLES]; } SpiceVoiceIn; static const SpicePlaybackInterface playback_sif = { @@ -152,44 +151,40 @@ static void line_out_fini (HWVoiceOut *hw) spice_server_remove_interface (&out->sin.base); } -static size_t line_out_run (HWVoiceOut *hw, size_t live) +static void *line_out_get_buffer(HWVoiceOut *hw, size_t *size) { - SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); - size_t rpos, decr; - size_t samples; + SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw); + size_t decr; - if (!live) { - return 0; + if (!out->frame) { + spice_server_playback_get_buffer(&out->sin, &out->frame, &out->fsize); + out->fpos = 0; } - decr = rate_get_samples (&hw->info, &out->rate); - decr = MIN (live, decr); + if (out->frame) { + decr = rate_get_samples(&hw->info, &out->rate); + decr = MIN(out->fsize - out->fpos, decr); - samples = decr; - rpos = hw->rpos; - while (samples) { - int left_till_end_samples = hw->samples - rpos; - int len = MIN (samples, left_till_end_samples); + *size = decr << hw->info.shift; + } else { + rate_start(&out->rate); + } + return out->frame + out->fpos; +} - if (!out->frame) { - spice_server_playback_get_buffer (&out->sin, &out->frame, &out->fsize); - out->fpos = out->frame; - } - if (out->frame) { - len = MIN (len, out->fsize); - hw->clip (out->fpos, hw->mix_buf + rpos, len); - out->fsize -= len; - out->fpos += len; - if (out->fsize == 0) { - spice_server_playback_put_samples (&out->sin, out->frame); - out->frame = out->fpos = NULL; - } - } - rpos = (rpos + len) % hw->samples; - samples -= len; +static size_t line_out_put_buffer(HWVoiceOut *hw, void *buf, size_t size) +{ + SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw); + + assert(buf == out->frame + out->fpos && out->fpos <= out->fsize); + out->fpos += size >> 2; + + if (out->fpos == out->fsize) { /* buffer full */ + spice_server_playback_put_samples(&out->sin, out->frame); + out->frame = NULL; } - hw->rpos = rpos; - return decr; + + return size; } static int line_out_ctl (HWVoiceOut *hw, int cmd, ...) @@ -211,9 +206,9 @@ static int line_out_ctl (HWVoiceOut *hw, int cmd, ...) } out->active = 0; if (out->frame) { - memset (out->fpos, 0, out->fsize << 2); + memset(out->frame + out->fpos, 0, (out->fsize - out->fpos) << 2); spice_server_playback_put_samples (&out->sin, out->frame); - out->frame = out->fpos = NULL; + out->frame = NULL; } spice_server_playback_stop (&out->sin); break; @@ -275,49 +270,20 @@ static void line_in_fini (HWVoiceIn *hw) spice_server_remove_interface (&in->sin.base); } -static size_t line_in_run(HWVoiceIn *hw) +static size_t line_in_read(HWVoiceIn *hw, void *buf, size_t len) { SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); - size_t num_samples; - int ready; - size_t len[2]; - uint64_t delta_samp; - const uint32_t *samples; - - if (!(num_samples = hw->samples - audio_pcm_hw_get_live_in (hw))) { - return 0; - } - - delta_samp = rate_get_samples (&hw->info, &in->rate); - num_samples = MIN (num_samples, delta_samp); + uint64_t delta_samp = rate_get_samples(&hw->info, &in->rate); + uint64_t to_read = MIN(len >> 2, delta_samp); + size_t ready = spice_server_record_get_samples(&in->sin, buf, to_read); - ready = spice_server_record_get_samples (&in->sin, in->samples, num_samples); - samples = in->samples; + /* XXX: do we need this? */ if (ready == 0) { - static const uint32_t silence[LINE_IN_SAMPLES]; - samples = silence; - ready = LINE_IN_SAMPLES; - } - - num_samples = MIN (ready, num_samples); - - if (hw->wpos + num_samples > hw->samples) { - len[0] = hw->samples - hw->wpos; - len[1] = num_samples - len[0]; - } else { - len[0] = num_samples; - len[1] = 0; + memset(buf, 0, to_read << 2); + ready = to_read; } - hw->conv (hw->conv_buf + hw->wpos, samples, len[0]); - - if (len[1]) { - hw->conv (hw->conv_buf, samples + len[0], len[1]); - } - - hw->wpos = (hw->wpos + num_samples) % hw->samples; - - return num_samples; + return ready << 2; } static int line_in_ctl (HWVoiceIn *hw, int cmd, ...) @@ -366,12 +332,14 @@ static int line_in_ctl (HWVoiceIn *hw, int cmd, ...) static struct audio_pcm_ops audio_callbacks = { .init_out = line_out_init, .fini_out = line_out_fini, - .run_out = line_out_run, + .write = audio_generic_write, + .get_buffer_out = line_out_get_buffer, + .put_buffer_out = line_out_put_buffer, .ctl_out = line_out_ctl, .init_in = line_in_init, .fini_in = line_in_fini, - .run_in = line_in_run, + .read = line_in_read, .ctl_in = line_in_ctl, }; |