This patch adds support to ASM_DATA_CMD_REMOVE_INITIAL_SILENCE
and ASM_DATA_CMD_REMOVE_TRAILING_SILENCE q6asm command to support
compressed metadata for gapless playback.
Signed-off-by: Srinivas Kandagatla <srinivas.kandaga...@linaro.org>
---
sound/soc/qcom/qdsp6/q6asm.c | 53 ++++++++++++++++++++++++++++++++++++
sound/soc/qcom/qdsp6/q6asm.h | 6 ++++
2 files changed, 59 insertions(+)
diff --git a/sound/soc/qcom/qdsp6/q6asm.c b/sound/soc/qcom/qdsp6/q6asm.c
index 205453d1c1fc..14ec7dad5b65 100644
--- a/sound/soc/qcom/qdsp6/q6asm.c
+++ b/sound/soc/qcom/qdsp6/q6asm.c
@@ -51,6 +51,8 @@
#define ASM_STREAM_CMD_OPEN_READWRITE_V2 0x00010D8D
#define ASM_MEDIA_FMT_ALAC 0x00012f31
#define ASM_MEDIA_FMT_APE 0x00012f32
+#define ASM_DATA_CMD_REMOVE_INITIAL_SILENCE 0x00010D67
+#define ASM_DATA_CMD_REMOVE_TRAILING_SILENCE 0x00010D68
#define ASM_LEGACY_STREAM_SESSION 0
@@ -639,6 +641,8 @@ static int32_t q6asm_stream_callback(struct apr_device
*adev,
case ASM_STREAM_CMD_OPEN_READWRITE_V2:
case ASM_STREAM_CMD_SET_ENCDEC_PARAM:
case ASM_DATA_CMD_MEDIA_FMT_UPDATE_V2:
+ case ASM_DATA_CMD_REMOVE_INITIAL_SILENCE:
+ case ASM_DATA_CMD_REMOVE_TRAILING_SILENCE:
if (result->status != 0) {
dev_err(ac->dev,
"cmd = 0x%x returned error = 0x%x\n",
@@ -1324,6 +1328,55 @@ int q6asm_stream_media_format_block_ape(struct
audio_client *ac,
}
EXPORT_SYMBOL_GPL(q6asm_stream_media_format_block_ape);
+static int q6asm_stream_remove_silence(struct audio_client *ac, uint32_t
stream_id,
+ uint32_t cmd,
+ uint32_t num_samples)
+{
+ uint32_t *samples;
+ struct apr_pkt *pkt;
+ void *p;
+ int rc, pkt_size;
+
+ pkt_size = APR_HDR_SIZE + sizeof(uint32_t);
+ p = kzalloc(pkt_size, GFP_ATOMIC);
+ if (!p)
+ return -ENOMEM;
+
+ pkt = p;
+ samples = p + APR_HDR_SIZE;
+
+ q6asm_add_hdr(ac, &pkt->hdr, pkt_size, true, stream_id);
+
+ pkt->hdr.opcode = cmd;
+ *samples = num_samples;
+ rc = apr_send_pkt(ac->adev, pkt);
+ if (rc == pkt_size)
+ rc = 0;
+
+ kfree(pkt);
+
+ return rc;
+}
+
+int q6asm_stream_remove_initial_silence(struct audio_client *ac,
+ uint32_t stream_id,
+ uint32_t initial_samples)
+{
+ return q6asm_stream_remove_silence(ac, stream_id,
+ ASM_DATA_CMD_REMOVE_INITIAL_SILENCE,
+ initial_samples);
+}
+EXPORT_SYMBOL_GPL(q6asm_stream_remove_initial_silence);
+
+int q6asm_stream_remove_trailing_silence(struct audio_client *ac, uint32_t
stream_id,
+ uint32_t trailing_samples)
+{
+ return q6asm_stream_remove_silence(ac, stream_id,
+ ASM_DATA_CMD_REMOVE_TRAILING_SILENCE,
+ trailing_samples);
+}
+EXPORT_SYMBOL_GPL(q6asm_stream_remove_trailing_silence);
+
/**
* q6asm_enc_cfg_blk_pcm_format_support() - setup pcm configuration for capture
*
diff --git a/sound/soc/qcom/qdsp6/q6asm.h b/sound/soc/qcom/qdsp6/q6asm.h
index 0379580f0742..e315f7ff5e54 100644
--- a/sound/soc/qcom/qdsp6/q6asm.h
+++ b/sound/soc/qcom/qdsp6/q6asm.h
@@ -135,6 +135,12 @@ int q6asm_run(struct audio_client *ac, uint32_t stream_id,
uint32_t flags,
uint32_t msw_ts, uint32_t lsw_ts);
int q6asm_run_nowait(struct audio_client *ac, uint32_t stream_id,
uint32_t flags, uint32_t msw_ts, uint32_t lsw_ts);
+int q6asm_stream_remove_initial_silence(struct audio_client *ac,
+ uint32_t stream_id,
+ uint32_t initial_samples);
+int q6asm_stream_remove_trailing_silence(struct audio_client *ac,
+ uint32_t stream_id,
+ uint32_t trailing_samples);
int q6asm_cmd(struct audio_client *ac, uint32_t stream_id, int cmd);
int q6asm_cmd_nowait(struct audio_client *ac, uint32_t stream_id, int cmd);
int q6asm_get_session_id(struct audio_client *ac);
--
2.21.0
