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| author |   Cezary Rojewski <cezary.rojewski@intel.com> | 2020-02-18 15:39:17 +0100 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2020-02-18 21:52:05 +0000 |
| commit | b9759ef2fd1acb0d3f3dce7991c44a4c5e9e68a3 (patch) | |
| tree | 02539e56160161da269031865ddac2cc8ca2d8e6 /include/sound/compress_driver.h | |
| parent | ALSA: core: Expand DMA buffer information (diff) | |
| download | wireguard-linux-b9759ef2fd1acb0d3f3dce7991c44a4c5e9e68a3.tar.xz wireguard-linux-b9759ef2fd1acb0d3f3dce7991c44a4c5e9e68a3.zip | |
ALSA: core: Implement compress page allocation and free routines
Add simple malloc and free methods for memory management for compress
streams. Based on snd_pcm_lib_malloc_pages and snd_pcm_lib_free_pages
implementation.
Signed-off-by: Divya Prakash <divya1.prakash@intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200218143924.10565-3-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound/compress_driver.h')
| -rw-r--r-- | include/sound/compress_driver.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/sound/compress_driver.h b/include/sound/compress_driver.h index 00f633c0c3ba..6ce8effa0b12 100644 --- a/include/sound/compress_driver.h +++ b/include/sound/compress_driver.h @@ -67,6 +67,7 @@ struct snd_compr_runtime { * @metadata_set: metadata set flag, true when set * @next_track: has userspace signal next track transition, true when set * @private_data: pointer to DSP private data + * @dma_buffer: allocated buffer if any */ struct snd_compr_stream { const char *name; @@ -78,6 +79,7 @@ struct snd_compr_stream { bool metadata_set; bool next_track; void *private_data; + struct snd_dma_buffer dma_buffer; }; /** @@ -212,6 +214,9 @@ snd_compr_set_runtime_buffer(struct snd_compr_stream *stream, } } +int snd_compr_malloc_pages(struct snd_compr_stream *stream, size_t size); +int snd_compr_free_pages(struct snd_compr_stream *stream); + int snd_compr_stop_error(struct snd_compr_stream *stream, snd_pcm_state_t state); |