Gabriel Ivăncescu : winealsa.drv: Adjust the buffer volume before sending it to ALSA.
Module: wine Branch: stable Commit: 5b45b6232ffdfad3c89bea73a6f74fc15e3d094c URL: https://source.winehq.org/git/wine.git/?a=commit;h=5b45b6232ffdfad3c89bea73a... Author: Gabriel Ivăncescu <gabrielopcode(a)gmail.com> Date: Mon May 20 13:43:36 2019 +0300 winealsa.drv: Adjust the buffer volume before sending it to ALSA. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=38182 Signed-off-by: Gabriel Ivăncescu <gabrielopcode(a)gmail.com> Signed-off-by: Andrew Eikum <aeikum(a)codeweavers.com> Signed-off-by: Alexandre Julliard <julliard(a)winehq.org> (cherry picked from commit 9d48b3294c0bf73f65ccefae28ed225aaba4abab) Signed-off-by: Michael Stefaniuc <mstefani(a)winehq.org> --- dlls/winealsa.drv/mmdevdrv.c | 137 ++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 130 insertions(+), 7 deletions(-) diff --git a/dlls/winealsa.drv/mmdevdrv.c b/dlls/winealsa.drv/mmdevdrv.c index de89fd05c5..12efde0c27 100644 --- a/dlls/winealsa.drv/mmdevdrv.c +++ b/dlls/winealsa.drv/mmdevdrv.c @@ -126,6 +126,7 @@ struct ACImpl { UINT32 lcl_offs_frames; /* offs into local_buffer where valid data starts */ UINT32 wri_offs_frames; /* where to write fresh data in local_buffer */ UINT32 hidden_frames; /* ALSA reserve to ensure continuous rendering */ + UINT32 vol_adjusted_frames; /* Frames we've already adjusted the volume of but didn't write yet */ UINT32 data_in_alsa_frames; HANDLE timer; @@ -1971,18 +1972,135 @@ static BYTE *remap_channels(ACImpl *This, BYTE *buf, snd_pcm_uframes_t frames) return This->remapping_buf; } +static void adjust_buffer_volume(const ACImpl *This, BYTE *buf, snd_pcm_uframes_t frames, BOOL mute) +{ + float vol[ARRAY_SIZE(This->alsa_channel_map)]; + BOOL adjust = FALSE; + UINT32 i, channels; + BYTE *end; + + if (This->vol_adjusted_frames >= frames) + return; + channels = This->fmt->nChannels; + + if (mute) + { + int err = snd_pcm_format_set_silence(This->alsa_format, buf, frames * channels); + if (err < 0) + WARN("Setting buffer to silence failed: %d (%s)\n", err, snd_strerror(err)); + return; + } + + /* Adjust the buffer based on the volume for each channel */ + for (i = 0; i < channels; i++) + vol[i] = This->vols[i] * This->session->master_vol; + for (i = 0; i < min(channels, This->session->channel_count); i++) + { + vol[i] *= This->session->channel_vols[i]; + adjust |= vol[i] != 1.0f; + } + while (i < channels) adjust |= vol[i++] != 1.0f; + if (!adjust) return; + + /* Skip the frames we've already adjusted before */ + end = buf + frames * This->fmt->nBlockAlign; + buf += This->vol_adjusted_frames * This->fmt->nBlockAlign; + + switch (This->alsa_format) + { +#ifndef WORDS_BIGENDIAN +#define PROCESS_BUFFER(type) do \ +{ \ + type *p = (type*)buf; \ + do \ + { \ + for (i = 0; i < channels; i++) \ + p[i] = p[i] * vol[i]; \ + p += i; \ + } while ((BYTE*)p != end); \ +} while (0) + case SND_PCM_FORMAT_S16_LE: + PROCESS_BUFFER(INT16); + break; + case SND_PCM_FORMAT_S32_LE: + PROCESS_BUFFER(INT32); + break; + case SND_PCM_FORMAT_FLOAT_LE: + PROCESS_BUFFER(float); + break; + case SND_PCM_FORMAT_FLOAT64_LE: + PROCESS_BUFFER(double); + break; +#undef PROCESS_BUFFER + case SND_PCM_FORMAT_S20_3LE: + case SND_PCM_FORMAT_S24_3LE: + { + /* Do it 12 bytes at a time until it is no longer possible */ + UINT32 *q = (UINT32*)buf, mask = ~0xff; + BYTE *p; + + /* After we adjust the volume, we need to mask out low bits */ + if (This->alsa_format == SND_PCM_FORMAT_S20_3LE) + mask = ~0x0fff; + + i = 0; + while (end - (BYTE*)q >= 12) + { + UINT32 v[4], k; + v[0] = q[0] << 8; + v[1] = q[1] << 16 | (q[0] >> 16 & ~0xff); + v[2] = q[2] << 24 | (q[1] >> 8 & ~0xff); + v[3] = q[2] & ~0xff; + for (k = 0; k < 4; k++) + { + v[k] = (INT32)((INT32)v[k] * vol[i]); + v[k] &= mask; + if (++i == channels) i = 0; + } + *q++ = v[0] >> 8 | v[1] << 16; + *q++ = v[1] >> 16 | v[2] << 8; + *q++ = v[2] >> 24 | v[3]; + } + p = (BYTE*)q; + while (p != end) + { + UINT32 v = (INT32)((INT32)(p[0] << 8 | p[1] << 16 | p[2] << 24) * vol[i]); + v &= mask; + *p++ = v >> 8 & 0xff; + *p++ = v >> 16 & 0xff; + *p++ = v >> 24; + if (++i == channels) i = 0; + } + break; + } +#endif + case SND_PCM_FORMAT_U8: + { + UINT8 *p = (UINT8*)buf; + do + { + for (i = 0; i < channels; i++) + p[i] = (int)((p[i] - 128) * vol[i]) + 128; + p += i; + } while ((BYTE*)p != end); + break; + } + default: + TRACE("Unhandled format %i, not adjusting volume.\n", This->alsa_format); + break; + } +} + static snd_pcm_sframes_t alsa_write_best_effort(ACImpl *This, BYTE *buf, snd_pcm_uframes_t frames, BOOL mute) { snd_pcm_sframes_t written; - if(mute){ - int err; - if((err = snd_pcm_format_set_silence(This->alsa_format, buf, - frames * This->fmt->nChannels)) < 0) - WARN("Setting buffer to silence failed: %d (%s)\n", err, - snd_strerror(err)); - } + adjust_buffer_volume(This, buf, frames, mute); + + /* Mark the frames we've already adjusted */ + if (This->vol_adjusted_frames < frames) + This->vol_adjusted_frames = frames; buf = remap_channels(This, buf, frames); @@ -2006,6 +2124,8 @@ static snd_pcm_sframes_t alsa_write_best_effort(ACImpl *This, BYTE *buf, written = snd_pcm_writei(This->pcm_handle, buf, frames); } + if (written > 0) + This->vol_adjusted_frames -= written; return written; } @@ -2103,7 +2223,10 @@ static void alsa_write_data(ACImpl *This) /* Add a lead-in when starting with too few frames to ensure * continuous rendering. Additional benefit: Force ALSA to start. */ if(This->data_in_alsa_frames == 0 && This->held_frames < This->alsa_period_frames) + { alsa_write_best_effort(This, This->silence_buf, This->alsa_period_frames - This->held_frames, FALSE); + This->vol_adjusted_frames = 0; + } if(This->started) max_copy_frames = data_not_in_alsa(This);
participants (1)
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Alexandre Julliard