diff options
| author | Andrej Krutak <dev@andree.sk> | 2016-09-18 21:59:24 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-09-20 00:00:16 +0300 |
| commit | 97d78acfb870a67339957e9c4d36dc03242df315 (patch) | |
| tree | e50c02a117e5a8e9f1ddf6272be6e53989f5f789 /sound/usb/line6/playback.c | |
| parent | 7a0f55aeeb8f1fa32a119d34ddfefc6100936692 (diff) | |
| download | linux-97d78acfb870a67339957e9c4d36dc03242df315.tar.xz | |
ALSA: line6: Allow different channel numbers for in/out
Changes bytes_per_frame to bytes_per_channel.
Signed-off-by: Andrej Krutak <dev@andree.sk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/line6/playback.c')
| -rw-r--r-- | sound/usb/line6/playback.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sound/usb/line6/playback.c b/sound/usb/line6/playback.c index 08bacf3b025e..812d18191e01 100644 --- a/sound/usb/line6/playback.c +++ b/sound/usb/line6/playback.c @@ -146,7 +146,9 @@ static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm) int index; int i, urb_size, urb_frames; int ret; - const int bytes_per_frame = line6pcm->properties->bytes_per_frame; + const int bytes_per_frame = + line6pcm->properties->bytes_per_channel * + line6pcm->properties->playback_hw.channels_max; const int frame_increment = line6pcm->properties->rates.rats[0].num_min; const int frame_factor = @@ -165,6 +167,7 @@ static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm) urb_out = line6pcm->out.urbs[index]; urb_size = 0; + /* TODO: this may not work for LINE6_ISO_PACKETS != 1 */ for (i = 0; i < LINE6_ISO_PACKETS; ++i) { /* compute frame size for given sampling rate */ int fsize = 0; @@ -178,9 +181,11 @@ static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm) line6pcm->out.count += frame_increment; n = line6pcm->out.count / frame_factor; line6pcm->out.count -= n * frame_factor; - fsize = n * bytes_per_frame; + fsize = n; } + fsize *= bytes_per_frame; + fout->offset = urb_size; fout->length = fsize; urb_size += fsize; @@ -305,6 +310,9 @@ static void audio_out_callback(struct urb *urb) struct snd_line6_pcm *line6pcm = (struct snd_line6_pcm *)urb->context; struct snd_pcm_substream *substream = get_substream(line6pcm, SNDRV_PCM_STREAM_PLAYBACK); + const int bytes_per_frame = + line6pcm->properties->bytes_per_channel * + line6pcm->properties->playback_hw.channels_max; #if USE_CLEAR_BUFFER_WORKAROUND memset(urb->transfer_buffer, 0, urb->transfer_buffer_length); @@ -329,7 +337,7 @@ static void audio_out_callback(struct urb *urb) struct snd_pcm_runtime *runtime = substream->runtime; line6pcm->out.pos_done += - length / line6pcm->properties->bytes_per_frame; + length / bytes_per_frame; if (line6pcm->out.pos_done >= runtime->buffer_size) line6pcm->out.pos_done -= runtime->buffer_size; |