hi_hdmi_attr

Description

Defines the HDMI output attributes.

Prototype

typedef struct {
    hi_bool hdmi_en;
    hi_hdmi_video_format video_format;
    hi_hdmi_deep_color deep_color_mode;
    hi_bool audio_en;
    hi_hdmi_sample_rate sample_rate;
    hi_hdmi_bit_depth bit_depth;
    hi_bool auth_mode_en;
    hi_bool deep_color_adapt_en;
    hi_u32 pix_clk;
} hi_hdmi_attr;

Members

Member	Description
hdmi_en	Whether to forcibly output video over the HDMI HI_TRUE: The video is force output over the HDMI. HI_FALSE: The video is output over the DVI. This field must be set to HI_TRUE in the current version.
video_format	Video standard. You are advised to set this parameter to the standard supported by the sink capability set. In the current version, this parameter can only be set to HI_HDMI_VIDEO_FORMAT_VESA_CUSTOMER_DEFINE.
deep_color_mode	Deep color output mode. The default value is HI_HDMI_DEEP_COLOR_24BIT (HI_HDMI_DEEP_COLOR_OFF). Some sinks do not support HI_HDMI_DEEP_COLOR_30BIT and HI_HDMI_DEEP_COLOR_36BIT. Setting this deep color may cause exceptions. Therefore, you need to set this deep color to the default value.
audio_en	Whether to enable the audio: It must be set to HI_TRUE when the audio output is used.
sample_rate	Audio sampling rate. The value of this parameter must be the same as that of AO. 48 kHz is the only sampling rate supported by the current version. You are advised to set the sampling rate to a value supported by the sink capability set.
bit_depth	Audio bit width. The default value is 16. In the current version, the value cannot be changed to a non-default value. (The value of this parameter must be the same as that of the AO.)
auth_mode_en	HDMI force output mode. If this mode is enabled, adaptive adjustment is not made based on the Extended Display Identification Data (EDID) of the display or authentication device. This mode mainly applies to authentication. HI_TRUE: Enable bAuthMode. HI_FALSE: Disable bAuthMode. In the current version, this parameter cannot be set to a non-default value.
deep_color_adapt_en	In the current version, this parameter can only be set to HI_TRUE.
pix_clk	Pixel clock. The parameter value must be the same as the pixel clock corresponding to the input timing standard configured by the VO module. The value can be obtained by querying the corresponding VESA standard. In the current version, the value cannot be changed to one different from the pixel clock of the input timing configured for the VO.

Parent topic: HDMI Peripherals