Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 6503a2bb authored by Meng Wang's avatar Meng Wang
Browse files

ALSA: compress: Add support to send codec specific data 



Codec specific  metadata is sent only for first stream in gapless
playback. This causes incorrect configuration to be set for second
stream and distortions are observed due to framedrops in adsp.
Add support to send codec specific format during start of
next stream in gapless using set_next_track_param.

Change-Id: Ieec6b2afedec156e47873efcad9b3571160b0a29
Signed-off-by: default avatarChaithanya Krishna Bacharaju <chaithan@codeaurora.org>
Signed-off-by: default avatarAlexy Joseph <alexyj@codeaurora.org>
Signed-off-by: default avatarBanajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: default avatarMeng Wang <mengw@codeaurora.org>
parent d92a6815

include/uapi/sound/compress_offload.h

+6 −0
Original line number Diff line number Diff line
@@ -185,6 +185,8 @@ struct snd_compr_metadata { 
 * SNDRV_COMPRESS_STOP: stop a running stream, discarding ring buffer content

 * and the buffers currently with DSP

 * SNDRV_COMPRESS_DRAIN: Play till end of buffers and stop after that

 * SNDRV_COMPRESS_SET_NEXT_TRACK_PARAM: send codec specific data for the next

 * track in gapless

 * SNDRV_COMPRESS_IOCTL_VERSION: Query the API version

 */

#define SNDRV_COMPRESS_IOCTL_VERSION	_IOR('C', 0x00, int)
@@ -206,6 +208,10 @@ struct snd_compr_metadata { 
#define SNDRV_COMPRESS_DRAIN		_IO('C', 0x34)

#define SNDRV_COMPRESS_NEXT_TRACK	_IO('C', 0x35)

#define SNDRV_COMPRESS_PARTIAL_DRAIN	_IO('C', 0x36)

#ifdef CONFIG_AUDIO_QGKI

#define SNDRV_COMPRESS_SET_NEXT_TRACK_PARAM\

				_IOW('C', 0x80, union snd_codec_options)

#endif

/*

 * TODO

 * 1. add mmap support