Add support to gapless playback by implementing metadata, next_track, drain and partial drain support.
Gapless on Q6ASM is implemented by opening 2 streams in a single asm stream and toggling them on next track. Signed-off-by: Srinivas Kandagatla <[email protected]> --- sound/soc/qcom/qdsp6/q6asm-dai.c | 212 +++++++++++++++++++++++-------- sound/soc/qcom/qdsp6/q6asm.h | 1 + 2 files changed, 158 insertions(+), 55 deletions(-) diff --git a/sound/soc/qcom/qdsp6/q6asm-dai.c b/sound/soc/qcom/qdsp6/q6asm-dai.c index c4b4684b7824..f48eca227fb5 100644 --- a/sound/soc/qcom/qdsp6/q6asm-dai.c +++ b/sound/soc/qcom/qdsp6/q6asm-dai.c @@ -67,12 +67,15 @@ struct q6asm_dai_rtd { uint16_t bits_per_sample; uint16_t source; /* Encoding source bit mask */ struct audio_client *audio_client; + uint32_t next_track_stream_id; + bool next_track; /* Active */ uint32_t stream_id; uint16_t session_id; enum stream_state state; uint32_t initial_samples_drop; uint32_t trailing_samples_drop; + bool notify_on_drain; }; struct q6asm_dai_data { @@ -510,9 +513,11 @@ static void compress_event_handler(uint32_t opcode, uint32_t token, { struct q6asm_dai_rtd *prtd = priv; struct snd_compr_stream *substream = prtd->cstream; - unsigned long flags; + unsigned long flags = 0; + u32 wflags = 0; uint64_t avail; - uint32_t bytes_written; + uint32_t bytes_written, bytes_to_write; + bool is_last_buffer = false; switch (opcode) { case ASM_CLIENT_EVENT_CMD_RUN_DONE: @@ -527,7 +532,25 @@ static void compress_event_handler(uint32_t opcode, uint32_t token, break; case ASM_CLIENT_EVENT_CMD_EOS_DONE: - prtd->state = Q6ASM_STREAM_STOPPED; + if (prtd->notify_on_drain) { + if (substream->partial_drain && prtd->next_track_stream_id) { + /** + * Close old stream and make it stale, switch + * the active stream now! + */ + q6asm_cmd_nowait(prtd->audio_client, + prtd->stream_id, + CMD_CLOSE); + prtd->stream_id = prtd->next_track_stream_id; + prtd->next_track_stream_id = 0; + } + + snd_compr_drain_notify(prtd->cstream); + prtd->notify_on_drain = false; + + } else { + prtd->state = Q6ASM_STREAM_STOPPED; + } break; case ASM_CLIENT_EVENT_DATA_WRITE_DONE: @@ -543,13 +566,32 @@ static void compress_event_handler(uint32_t opcode, uint32_t token, } avail = prtd->bytes_received - prtd->bytes_sent; + if (avail > prtd->pcm_count) { + bytes_to_write = prtd->pcm_count; + } else { + if (substream->partial_drain || prtd->notify_on_drain) + is_last_buffer = true; + bytes_to_write = avail; + } + + if (bytes_to_write) { + if (substream->partial_drain && is_last_buffer) { + wflags |= ASM_LAST_BUFFER_FLAG; + q6asm_stream_remove_trailing_silence(prtd->audio_client, + prtd->stream_id, + prtd->trailing_samples_drop); + } - if (avail >= prtd->pcm_count) { q6asm_write_async(prtd->audio_client, prtd->stream_id, - prtd->pcm_count, 0, 0, 0); - prtd->bytes_sent += prtd->pcm_count; + bytes_to_write, 0, 0, wflags); + + prtd->bytes_sent += bytes_to_write; } + if (prtd->notify_on_drain && is_last_buffer) + q6asm_cmd_nowait(prtd->audio_client, + prtd->stream_id, CMD_EOS); + spin_unlock_irqrestore(&prtd->lock, flags); break; @@ -629,9 +671,15 @@ static int q6asm_dai_compr_free(struct snd_soc_component *component, struct snd_soc_pcm_runtime *rtd = stream->private_data; if (prtd->audio_client) { - if (prtd->state) + if (prtd->state) { q6asm_cmd(prtd->audio_client, prtd->stream_id, CMD_CLOSE); + if (prtd->next_track_stream_id) { + q6asm_cmd(prtd->audio_client, + prtd->next_track_stream_id, + CMD_CLOSE); + } + } snd_dma_free_pages(&prtd->dma_buffer); q6asm_unmap_memory_regions(stream->direction, @@ -645,15 +693,13 @@ static int q6asm_dai_compr_free(struct snd_soc_component *component, return 0; } -static int q6asm_dai_compr_set_params(struct snd_soc_component *component, - struct snd_compr_stream *stream, - struct snd_compr_params *params) +static int __q6asm_dai_compr_set_codec_params(struct snd_soc_component *component, + struct snd_compr_stream *stream, + struct snd_compr_params *params, + int stream_id) { struct snd_compr_runtime *runtime = stream->runtime; struct q6asm_dai_rtd *prtd = runtime->private_data; - struct snd_soc_pcm_runtime *rtd = stream->private_data; - int dir = stream->direction; - struct q6asm_dai_data *pdata; struct q6asm_flac_cfg flac_cfg; struct q6asm_wma_cfg wma_cfg; struct q6asm_alac_cfg alac_cfg; @@ -669,43 +715,8 @@ static int q6asm_dai_compr_set_params(struct snd_soc_component *component, codec_options = &(prtd->codec_param.codec.options); - memcpy(&prtd->codec_param, params, sizeof(*params)); - pdata = snd_soc_component_get_drvdata(component); - if (!pdata) - return -EINVAL; - - if (!prtd || !prtd->audio_client) { - dev_err(dev, "private data null or audio client freed\n"); - return -EINVAL; - } - - prtd->periods = runtime->fragments; - prtd->pcm_count = runtime->fragment_size; - prtd->pcm_size = runtime->fragments * runtime->fragment_size; - prtd->bits_per_sample = 16; - if (dir == SND_COMPRESS_PLAYBACK) { - ret = q6asm_open_write(prtd->audio_client, prtd->stream_id, - params->codec.id, params->codec.profile, - prtd->bits_per_sample, true); - - if (ret < 0) { - dev_err(dev, "q6asm_open_write failed\n"); - q6asm_audio_client_free(prtd->audio_client); - prtd->audio_client = NULL; - return ret; - } - } - - prtd->session_id = q6asm_get_session_id(prtd->audio_client); - ret = q6routing_stream_open(rtd->dai_link->id, LEGACY_PCM_MODE, - prtd->session_id, dir); - if (ret) { - dev_err(dev, "Stream reg failed ret:%d\n", ret); - return ret; - } - switch (params->codec.id) { case SND_AUDIOCODEC_FLAC: @@ -722,7 +733,7 @@ static int q6asm_dai_compr_set_params(struct snd_soc_component *component, flac_cfg.min_frame_size = flac->min_frame_size; ret = q6asm_stream_media_format_block_flac(prtd->audio_client, - prtd->stream_id, + stream_id, &flac_cfg); if (ret < 0) { dev_err(dev, "FLAC CMD Format block failed:%d\n", ret); @@ -782,11 +793,11 @@ static int q6asm_dai_compr_set_params(struct snd_soc_component *component, if (wma_v9) ret = q6asm_stream_media_format_block_wma_v9( - prtd->audio_client, prtd->stream_id, + prtd->audio_client, stream_id, &wma_cfg); else ret = q6asm_stream_media_format_block_wma_v10( - prtd->audio_client, prtd->stream_id, + prtd->audio_client, stream_id, &wma_cfg); if (ret < 0) { dev_err(dev, "WMA9 CMD failed:%d\n", ret); @@ -820,7 +831,7 @@ static int q6asm_dai_compr_set_params(struct snd_soc_component *component, break; } ret = q6asm_stream_media_format_block_alac(prtd->audio_client, - prtd->stream_id, + stream_id, &alac_cfg); if (ret < 0) { dev_err(dev, "ALAC CMD Format block failed:%d\n", ret); @@ -845,7 +856,7 @@ static int q6asm_dai_compr_set_params(struct snd_soc_component *component, ape_cfg.seek_table_present = ape->seek_table_present; ret = q6asm_stream_media_format_block_ape(prtd->audio_client, - prtd->stream_id, + stream_id, &ape_cfg); if (ret < 0) { dev_err(dev, "APE CMD Format block failed:%d\n", ret); @@ -857,6 +868,63 @@ static int q6asm_dai_compr_set_params(struct snd_soc_component *component, break; } + return 0; +} + +static int q6asm_dai_compr_set_params(struct snd_soc_component *component, + struct snd_compr_stream *stream, + struct snd_compr_params *params) +{ + struct snd_compr_runtime *runtime = stream->runtime; + struct q6asm_dai_rtd *prtd = runtime->private_data; + struct snd_soc_pcm_runtime *rtd = stream->private_data; + int dir = stream->direction; + struct q6asm_dai_data *pdata; + struct device *dev = component->dev; + int ret; + + pdata = snd_soc_component_get_drvdata(component); + if (!pdata) + return -EINVAL; + + if (!prtd || !prtd->audio_client) { + dev_err(dev, "private data null or audio client freed\n"); + return -EINVAL; + } + + prtd->periods = runtime->fragments; + prtd->pcm_count = runtime->fragment_size; + prtd->pcm_size = runtime->fragments * runtime->fragment_size; + prtd->bits_per_sample = 16; + + if (dir == SND_COMPRESS_PLAYBACK) { + ret = q6asm_open_write(prtd->audio_client, prtd->stream_id, params->codec.id, + params->codec.profile, prtd->bits_per_sample, + true); + + if (ret < 0) { + dev_err(dev, "q6asm_open_write failed\n"); + q6asm_audio_client_free(prtd->audio_client); + prtd->audio_client = NULL; + return ret; + } + } + + prtd->session_id = q6asm_get_session_id(prtd->audio_client); + ret = q6routing_stream_open(rtd->dai_link->id, LEGACY_PCM_MODE, + prtd->session_id, dir); + if (ret) { + dev_err(dev, "Stream reg failed ret:%d\n", ret); + return ret; + } + + ret = __q6asm_dai_compr_set_codec_params(component, stream, params, + prtd->stream_id); + if (ret) { + dev_err(dev, "codec param setup failed ret:%d\n", ret); + return ret; + } + ret = q6asm_map_memory_regions(dir, prtd->audio_client, prtd->phys, (prtd->pcm_size / prtd->periods), prtd->periods); @@ -871,12 +939,13 @@ static int q6asm_dai_compr_set_params(struct snd_soc_component *component, return 0; } -static int q6asm_dai_compr_set_metadata(struct snd_compr_stream *stream, +static int q6asm_dai_compr_set_metadata(struct snd_soc_component *component, + struct snd_compr_stream *stream, struct snd_compr_metadata *metadata) { struct snd_compr_runtime *runtime = stream->runtime; struct q6asm_dai_rtd *prtd = runtime->private_data; - int ret = 0; + int stream_id = prtd->stream_id, ret = 0; switch (metadata->key) { case SNDRV_COMPRESS_ENCODER_PADDING: @@ -884,6 +953,31 @@ static int q6asm_dai_compr_set_metadata(struct snd_compr_stream *stream, break; case SNDRV_COMPRESS_ENCODER_DELAY: prtd->initial_samples_drop = metadata->value[0]; + if (prtd->next_track_stream_id) { + stream_id = prtd->next_track_stream_id; + ret = q6asm_open_write(prtd->audio_client, + prtd->next_track_stream_id, + prtd->codec_param.codec.id, + prtd->codec_param.codec.profile, + prtd->bits_per_sample, + true); + if (ret < 0) { + dev_err(component->dev, "q6asm_open_write failed\n"); + return ret; + } + ret = __q6asm_dai_compr_set_codec_params(component, stream, + &prtd->codec_param, + prtd->next_track_stream_id); + if (ret < 0) { + dev_err(component->dev, "q6asm_open_write failed\n"); + return ret; + } + + } + + q6asm_stream_remove_initial_silence(prtd->audio_client, + stream_id, + prtd->initial_samples_drop); break; default: ret = -EINVAL; @@ -917,6 +1011,14 @@ static int q6asm_dai_compr_trigger(struct snd_soc_component *component, ret = q6asm_cmd_nowait(prtd->audio_client, prtd->stream_id, CMD_PAUSE); break; + case SND_COMPR_TRIGGER_NEXT_TRACK: + prtd->next_track = true; + prtd->next_track_stream_id = (prtd->stream_id == 1 ? 2 : 1); + break; + case SND_COMPR_TRIGGER_DRAIN: + case SND_COMPR_TRIGGER_PARTIAL_DRAIN: + prtd->notify_on_drain = true; + break; default: ret = -EINVAL; break; diff --git a/sound/soc/qcom/qdsp6/q6asm.h b/sound/soc/qcom/qdsp6/q6asm.h index 69513ac1fa55..a8dddfeb28da 100644 --- a/sound/soc/qcom/qdsp6/q6asm.h +++ b/sound/soc/qcom/qdsp6/q6asm.h @@ -34,6 +34,7 @@ enum { #define MAX_SESSIONS 8 #define NO_TIMESTAMP 0xFF00 #define FORMAT_LINEAR_PCM 0x0000 +#define ASM_LAST_BUFFER_FLAG BIT(30) struct q6asm_flac_cfg { u32 sample_rate; -- 2.21.0
