C++ (Cpp) sst_fill_alloc_params示例

示例#1

文件： sst-mfld-platform-pcm.c 项目： 383530895/linux

static int sst_platform_alloc_stream(struct snd_pcm_substream *substream,
		struct snd_soc_dai *dai)
{
	struct sst_runtime_stream *stream =
			substream->runtime->private_data;
	struct snd_sst_stream_params param = {{{0,},},};
	struct snd_sst_params str_params = {0};
	struct snd_sst_alloc_params_ext alloc_params = {0};
	int ret_val = 0;
	struct sst_data *ctx = snd_soc_dai_get_drvdata(dai);

	/* set codec params and inform SST driver the same */
	sst_fill_pcm_params(substream, &param);
	sst_fill_alloc_params(substream, &alloc_params);
	substream->runtime->dma_area = substream->dma_buffer.area;
	str_params.sparams = param;
	str_params.aparams = alloc_params;
	str_params.codec = SST_CODEC_TYPE_PCM;

	/* fill the device type and stream id to pass to SST driver */
	ret_val = sst_fill_stream_params(substream, ctx, &str_params, false);
	if (ret_val < 0)
		return ret_val;

	stream->stream_info.str_id = str_params.stream_id;

	ret_val = stream->ops->open(sst->dev, &str_params);
	if (ret_val <= 0)
		return ret_val;


	return ret_val;
}

示例#2

文件： pcm.c 项目： ratsbu11/android_kernel_asus_zenfone5

static int sst_platform_alloc_stream(struct snd_pcm_substream *substream,
		struct snd_soc_platform *platform)
{
	struct sst_runtime_stream *stream =
			substream->runtime->private_data;
	struct snd_sst_stream_params param = {{{0,},},};
	struct snd_sst_params str_params = {0};
	struct snd_sst_alloc_params_ext alloc_params = {0};
	int ret_val = 0;
	struct sst_data *ctx = snd_soc_platform_get_drvdata(platform);

	/* set codec params and inform SST driver the same */
	sst_fill_pcm_params(substream, &param);
	sst_fill_alloc_params(substream, &alloc_params);
	substream->runtime->dma_area = substream->dma_buffer.area;
	str_params.sparams = param;
	str_params.aparams = alloc_params;
	str_params.codec = SST_CODEC_TYPE_PCM;

	ctx->ll_db.period_time = CALC_PERIODTIME(substream->runtime->period_size,
					substream->runtime->rate);

	/* fill the device type and stream id to pass to SST driver */
	ret_val = sst_fill_stream_params(substream, ctx, &str_params, false);
	pr_debug("platform prepare: fill stream params ret_val = 0x%x\n", ret_val);
	if (ret_val < 0)
		return ret_val;

	stream->stream_info.str_id = str_params.stream_id;

	ret_val = stream->ops->open(&str_params);
	pr_debug("platform prepare: stream open ret_val = 0x%x\n", ret_val);
	if (ret_val <= 0)
		return ret_val;

	pr_debug("platform allocated strid:  %d\n", stream->stream_info.str_id);

	return ret_val;
}