kernel/include/uapi/sound/compress_offload.h, branch linux-rolling-stable

ALSA: compress_offload: increase SNDRV_COMPRESS_VERSION minor version by 1

2025-09-19T12:58:09Z

Since addition of raw opus codec support we need to update compress API minor version by one. Bump the SNDRV_COMPRESS_VERSION to 0.4.1. Signed-off-by: Alexey Klimov Acked-by: Vinod Koul Signed-off-by: Takashi Iwai

ALSA: compress_offload: Add SNDRV_COMPRESS_AVAIL64 ioctl

2025-09-08T07:33:24Z

The previous patch introduced a 64-bit timestamp ioctl (SNDRV_COMPRESS_TSTAMP64). To provide a consistent API, this patch adds a corresponding 64-bit version of the SNDRV_COMPRESS_AVAIL ioctl. A new struct snd_compr_avail64 is added to the UAPI, which includes the 64-bit timestamp. The existing ioctl implementation is refactored to handle both the 32-bit and 64-bit variants. Reviewed-by: Miller Liang Tested-by: Joris Verhaegen Signed-off-by: Joris Verhaegen Acked-by: Vinod Koul Reviewed-by: Charles Keepax Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20250905091301.2711705-4-verhaegen@google.com

ALSA: compress_offload: Add SNDRV_COMPRESS_TSTAMP64 ioctl

2025-09-08T07:33:24Z

The previous patch introduced the internal infrastructure for handling 64-bit timestamps. This patch exposes this capability to user-space. Define the new ioctl command SNDRV_COMPRESS_TSTAMP64, which allows applications to fetch the overflow-safe struct snd_compr_tstamp64. The ioctl dispatch table is updated to handle the new command by calling a new snd_compr_tstamp64 handler, while the legacy path is renamed to snd_compr_tstamp32 for clarity. This patch bumps the SNDRV_COMPRESS_VERSION to 0.4.0. Reviewed-by: Miller Liang Tested-by: Joris Verhaegen Signed-off-by: Joris Verhaegen Reviewed-by: Charles Keepax Acked-by: Mark Brown Acked-by: Vinod Koul Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20250905091301.2711705-3-verhaegen@google.com

ALSA: compress_offload: Add 64-bit safe timestamp infrastructure

2025-09-08T07:33:24Z

The copied_total field in struct snd_compr_tstamp is a 32-bit value that can overflow on long-running high-bitrate streams, leading to incorrect calculations for buffer availablility. This patch adds a 64-bit safe timestamping mechanism. A new UAPI struct, snd_compr_tstamp64, is added which uses 64-bit types for byte counters. The relevant ops structures across the ASoC and core compress code are updated to use this new struct. ASoC drivers are updated to use u64 counters. Internal timestamps being u64 now, a compatibility function is added to convert the 64-bit timestamp back to the 32-bit format for legacy ioctl callers. Reviewed-by: Miller Liang Tested-by: Joris Verhaegen Signed-off-by: Joris Verhaegen Reviewed-by: Srinivas Kandagatla Reviewed-by: Charles Keepax Acked-by: Mark Brown Acked-by: Vinod Koul Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20250905091301.2711705-2-verhaegen@google.com

ALSA: compress_offload: Add missing descriptions in structs

2024-11-13T12:54:27Z

Add the missing descriptions for snd_compr_ops, snd_compr_task and snd_compr_task_status fields, in order to shut up the build warnings. Fixes: 04177158cf98 ("ALSA: compress_offload: introduce accel operation mode") Reported-by: Stephen Rothwell Closes: https://lore.kernel.org/20241028193731.4b0c3788@canb.auug.org.au Link: https://patch.msgid.link/20241113072304.4447-1-tiwai@suse.de Signed-off-by: Takashi Iwai

ALSA: compress_offload: introduce accel operation mode

2024-10-25T08:53:20Z

There is a requirement to expose the audio hardware that accelerates various tasks for user space such as sample rate converters, compressed stream decoders, etc. This is description for the API extension for the compress ALSA API which is able to handle "tasks" that are not bound to real-time operations and allows for the serialization of operations. For details, refer to "compress-accel.rst" document. Cc: Mark Brown Cc: Shengjiu Wang Cc: Nicolas Dufresne Cc: Amadeusz Sławiński Cc: Pierre-Louis Bossart Cc: Vinod Koul Signed-off-by: Jaroslav Kysela Reviewed-by: Amadeusz Sławiński Tested-by: Shengjiu Wang Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20241002093904.1809799-1-perex@perex.cz

ALSA: Remove some left-over license text in include/uapi/sound/

2022-09-27T06:42:50Z

There is already a SPDX-License-Identifier tag, so the corresponding license text can be removed. Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/203c1db92c470925f31e361f6e7d180812501f2e.1664112023.git.christophe.jaillet@wanadoo.fr Signed-off-by: Takashi Iwai

ALSA: compress: Fix kernel doc warnings

2022-07-13T11:42:36Z

Each kernel doc comment expects the definition of the return value and the summary for each struct / enum in a proper format. This patch adds or fixes the missing entries for compress-offload API. Link: https://lore.kernel.org/r/20220713104759.4365-5-tiwai@suse.de Signed-off-by: Takashi Iwai

ALSA: fix kernel-doc markups

2020-10-26T14:26:31Z

Kernel-doc markups should use this format: identifier - description There is a common comment marked, instead, with kernel-doc notation. Some identifiers have different names between their prototypes and the kernel-doc markup. Signed-off-by: Mauro Carvalho Chehab Acked-by: Mark Brown Link: https://lore.kernel.org/r/535182d6f55d7a7de293dda9676df68f5f60afc6.1603469755.git.mchehab+huawei@kernel.org Signed-off-by: Takashi Iwai

ALSA: compress: bump the version

2020-03-16T17:52:12Z

We have added support for bunch of new decoders and parameters for decoders. To help users find the support bump the version up to 0,2,0. Signed-off-by: Vinod Koul Reviewed-by: Takashi Iwai Link: https://lore.kernel.org/r/20200316055221.1944464-10-vkoul@kernel.org Signed-off-by: Mark Brown