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authorCezary Rojewski <cezary.rojewski@intel.com>2020-02-18 15:39:17 +0100
committerMark Brown <broonie@kernel.org>2020-02-18 21:52:05 +0000
commitb9759ef2fd1acb0d3f3dce7991c44a4c5e9e68a3 (patch)
tree02539e56160161da269031865ddac2cc8ca2d8e6 /include/sound
parent386dd54b3a2eedb91aa6e465e7c3a57db04f3960 (diff)
downloadlinux-b9759ef2fd1acb0d3f3dce7991c44a4c5e9e68a3.tar.bz2
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')
-rw-r--r--include/sound/compress_driver.h5
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);