C++ (Cpp) hdmi_eld_valid示例

示例#1

文件： hda_eld.c 项目： 458941968/mini2440-kernel-2.6.29

int snd_hdmi_get_eld(struct hdmi_eld *eld,
		     struct hda_codec *codec, hda_nid_t nid)
{
	int i;
	int ret;
	int size;
	unsigned char *buf;

	if (!hdmi_eld_valid(codec, nid))
		return -ENOENT;

	size = snd_hdmi_get_eld_size(codec, nid);
	if (size == 0) {
		/* wfg: workaround for ASUS P5E-VM HDMI board */
		snd_printd(KERN_INFO "HDMI: ELD buf size is 0, force 128\n");
		size = 128;
	}
	if (size < ELD_FIXED_BYTES || size > PAGE_SIZE) {
		snd_printd(KERN_INFO "HDMI: invalid ELD buf size %d\n", size);
		return -ERANGE;
	}

	buf = kmalloc(size, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	for (i = 0; i < size; i++)
		buf[i] = hdmi_get_eld_byte(codec, nid, i);

	ret = hdmi_update_eld(eld, buf, size);

	kfree(buf);
	return ret;
}

示例#2

文件： hda_eld.c 项目： ARMP/android_kernel_lge_x3

int snd_hdmi_get_eld(struct hdmi_eld *eld,
		     struct hda_codec *codec, hda_nid_t nid)
{
	int i;
	int ret;
	int size;
	unsigned char *buf;

	if (!hdmi_eld_valid(codec, nid))
		return -ENOENT;

	size = snd_hdmi_get_eld_size(codec, nid);
	if (size == 0) {
		/* wfg: workaround for ASUS P5E-VM HDMI board */
		snd_printd(KERN_INFO "HDMI: ELD buf size is 0, force 128\n");
		size = 128;
	}
	if (size < ELD_FIXED_BYTES || size > PAGE_SIZE) {
		snd_printd(KERN_INFO "HDMI: invalid ELD buf size %d\n", size);
		return -ERANGE;
	}

	if (!eld->lpcm_sad_ready)
		hdmi_update_lpcm_sad_eld(codec, nid, eld, size);

	codec->recv_dec_cap = 0;
	for (i = 0; i < eld->sad_count; i++) {
		if (eld->sad[i].format == AUDIO_CODING_TYPE_AC3) {
			codec->recv_dec_cap |= (1<<AUDIO_CODING_TYPE_AC3);
		} else if (eld->sad[i].format == AUDIO_CODING_TYPE_DTS) {
			codec->recv_dec_cap |= (1<<AUDIO_CODING_TYPE_DTS);
		}
	}

	buf = kmalloc(size, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	for (i = 0; i < size; i++)
		buf[i] = hdmi_get_eld_byte(codec, nid, i);

	ret = hdmi_update_eld(eld, buf, size);

	kfree(buf);
	return ret;
}