diff options
Diffstat (limited to 'include/sound/pcm-indirect.h')
| -rw-r--r-- | include/sound/pcm-indirect.h | 37 |
1 files changed, 17 insertions, 20 deletions
diff --git a/include/sound/pcm-indirect.h b/include/sound/pcm-indirect.h index 7ade285328cf..98e06ea73b2b 100644 --- a/include/sound/pcm-indirect.h +++ b/include/sound/pcm-indirect.h @@ -1,22 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Helper functions for indirect PCM data transfer * * Copyright (c) by Takashi Iwai <tiwai@suse.de> * Jaroslav Kysela <perex@perex.cz> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef __SOUND_PCM_INDIRECT_H @@ -57,7 +44,7 @@ snd_pcm_indirect_playback_transfer(struct snd_pcm_substream *substream, if (diff < -(snd_pcm_sframes_t) (runtime->boundary / 2)) diff += runtime->boundary; if (diff < 0) - return -EINVAL; + return -EPIPE; rec->sw_ready += (int)frames_to_bytes(runtime, diff); rec->appl_ptr = appl_ptr; } @@ -96,6 +83,8 @@ snd_pcm_indirect_playback_pointer(struct snd_pcm_substream *substream, struct snd_pcm_indirect *rec, unsigned int ptr) { int bytes = ptr - rec->hw_io; + int err; + if (bytes < 0) bytes += rec->hw_buffer_size; rec->hw_io = ptr; @@ -103,8 +92,11 @@ snd_pcm_indirect_playback_pointer(struct snd_pcm_substream *substream, rec->sw_io += bytes; if (rec->sw_io >= rec->sw_buffer_size) rec->sw_io -= rec->sw_buffer_size; - if (substream->ops->ack) - substream->ops->ack(substream); + if (substream->ops->ack) { + err = substream->ops->ack(substream); + if (err == -EPIPE) + return SNDRV_PCM_POS_XRUN; + } return bytes_to_frames(substream->runtime, rec->sw_io); } @@ -125,7 +117,7 @@ snd_pcm_indirect_capture_transfer(struct snd_pcm_substream *substream, if (diff < -(snd_pcm_sframes_t) (runtime->boundary / 2)) diff += runtime->boundary; if (diff < 0) - return -EINVAL; + return -EPIPE; rec->sw_ready -= frames_to_bytes(runtime, diff); rec->appl_ptr = appl_ptr; } @@ -165,6 +157,8 @@ snd_pcm_indirect_capture_pointer(struct snd_pcm_substream *substream, { int qsize; int bytes = ptr - rec->hw_io; + int err; + if (bytes < 0) bytes += rec->hw_buffer_size; rec->hw_io = ptr; @@ -175,8 +169,11 @@ snd_pcm_indirect_capture_pointer(struct snd_pcm_substream *substream, rec->sw_io += bytes; if (rec->sw_io >= rec->sw_buffer_size) rec->sw_io -= rec->sw_buffer_size; - if (substream->ops->ack) - substream->ops->ack(substream); + if (substream->ops->ack) { + err = substream->ops->ack(substream); + if (err == -EPIPE) + return SNDRV_PCM_POS_XRUN; + } return bytes_to_frames(substream->runtime, rec->sw_io); } |