C++ (Cpp) sbc_get_frame_duration示例

示例#1

文件： gstsbcenc.c 项目： Bisheg/bluez

gboolean gst_sbc_enc_fill_sbc_params(GstSbcEnc *enc, GstCaps *caps)
{
	if (!gst_caps_is_fixed(caps)) {
		GST_DEBUG_OBJECT(enc, "didn't receive fixed caps, "
				"returning false");
		return FALSE;
	}

	if (!gst_sbc_util_fill_sbc_params(&enc->sbc, caps))
		return FALSE;

	if (enc->rate != 0 && gst_sbc_parse_rate_from_sbc(enc->sbc.frequency)
				 != enc->rate)
		goto fail;

	if (enc->channels != 0 && gst_sbc_get_channel_number(enc->sbc.mode)
				!= enc->channels)
		goto fail;

	if (enc->blocks != 0 && gst_sbc_parse_blocks_from_sbc(enc->sbc.blocks)
				 != enc->blocks)
		goto fail;

	if (enc->subbands != 0 && gst_sbc_parse_subbands_from_sbc(
				enc->sbc.subbands) != enc->subbands)
		goto fail;

	if (enc->mode != SBC_ENC_DEFAULT_MODE && enc->sbc.mode != enc->mode)
		goto fail;

	if (enc->allocation != SBC_AM_AUTO &&
				enc->sbc.allocation != enc->allocation)
		goto fail;

	if (enc->bitpool != SBC_ENC_BITPOOL_AUTO &&
				enc->sbc.bitpool != enc->bitpool)
		goto fail;

	enc->codesize = sbc_get_codesize(&enc->sbc);
	enc->frame_length = sbc_get_frame_length(&enc->sbc);
	enc->frame_duration = sbc_get_frame_duration(&enc->sbc);

	GST_DEBUG_OBJECT(enc, "codesize: %d, frame_length: %d, frame_duration:"
			" %d", enc->codesize, enc->frame_length,
			enc->frame_duration);

	return TRUE;

fail:
	memset(&enc->sbc, 0, sizeof(sbc_t));
	return FALSE;
}

示例#2

static void bluetooth_a2dp_setup(struct bluetooth_data *data)
{
	sbc_capabilities_t active_capabilities = data->sbc_capabilities;

	sbc_reinit(&data->sbc, 0);

	if (active_capabilities.frequency & BT_SBC_SAMPLING_FREQ_16000)
		data->sbc.frequency = SBC_FREQ_16000;

	if (active_capabilities.frequency & BT_SBC_SAMPLING_FREQ_32000)
		data->sbc.frequency = SBC_FREQ_32000;

	if (active_capabilities.frequency & BT_SBC_SAMPLING_FREQ_44100)
		data->sbc.frequency = SBC_FREQ_44100;

	if (active_capabilities.frequency & BT_SBC_SAMPLING_FREQ_48000)
		data->sbc.frequency = SBC_FREQ_48000;

	if (active_capabilities.channel_mode & BT_A2DP_CHANNEL_MODE_MONO)
		data->sbc.mode = SBC_MODE_MONO;

	if (active_capabilities.channel_mode & BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL)
		data->sbc.mode = SBC_MODE_DUAL_CHANNEL;

	if (active_capabilities.channel_mode & BT_A2DP_CHANNEL_MODE_STEREO)
		data->sbc.mode = SBC_MODE_STEREO;

	if (active_capabilities.channel_mode & BT_A2DP_CHANNEL_MODE_JOINT_STEREO)
		data->sbc.mode = SBC_MODE_JOINT_STEREO;

	data->sbc.allocation = active_capabilities.allocation_method
				== BT_A2DP_ALLOCATION_SNR ? SBC_AM_SNR
				: SBC_AM_LOUDNESS;

	switch (active_capabilities.subbands) {
	case BT_A2DP_SUBBANDS_4:
		data->sbc.subbands = SBC_SB_4;
		break;
	case BT_A2DP_SUBBANDS_8:
		data->sbc.subbands = SBC_SB_8;
		break;
	}

	switch (active_capabilities.block_length) {
	case BT_A2DP_BLOCK_LENGTH_4:
		data->sbc.blocks = SBC_BLK_4;
		break;
	case BT_A2DP_BLOCK_LENGTH_8:
		data->sbc.blocks = SBC_BLK_8;
		break;
	case BT_A2DP_BLOCK_LENGTH_12:
		data->sbc.blocks = SBC_BLK_12;
		break;
	case BT_A2DP_BLOCK_LENGTH_16:
		data->sbc.blocks = SBC_BLK_16;
		break;
	}

	data->sbc.bitpool = active_capabilities.max_bitpool;
	data->codesize = sbc_get_codesize(&data->sbc);
	data->frame_duration = sbc_get_frame_duration(&data->sbc);
	DBG("frame_duration: %d us", data->frame_duration);
}