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ALSA: core: Implement compress page allocation and free routines

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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>
This commit is contained in:
Cezary Rojewski
2020-02-18 15:39:17 +01:00
committed by Mark Brown
parent 386dd54b3a
commit b9759ef2fd
2 changed files with 47 additions and 0 deletions
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5
include/sound/compress_driver.h
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@@ -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);