hi_hdmi_attr

Function

Defines the HDMI output attributes.

Definition

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;

For details about basic data types hi_bool and hi_u32, see Basic Data Types.

Members

Member	Description
hdmi_en	Whether to forcibly output a video over the HDMI. HI_TRUE: The video is forcibly output over the HDMI. HI_FALSE: The video is output over the DVI. This parameter must be set to HI_TRUE in the current version.
video_format	Video standard. You are advised to set this parameter to a standard supported by the sink capability set. For details, see hi_hdmi_video_format. This parameter must be set to HI_HDMI_VIDEO_FORMAT_VESA_CUSTOMER_DEFINE in the current version.
deep_color_mode	Deep color output mode. For details, see hi_hdmi_deep_color. 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	Audio enable. To enable audio output, set this parameter to HI_TRUE.
sample_rate	Audio sampling rate. The configuration of this parameter must be the same as that of the 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. For details, see hi_hdmi_sample_rate.
bit_depth	Audio bit width. The default value is 16, which is the only value supported by the current version. The configuration of this parameter must be the same as that of the AO. For details, see hi_hdmi_bit_depth.
auth_mode_en	HDMI force output mode enable. 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. The default value is the only value supported by the current version.
deep_color_adapt_en	In the current version, this parameter can only be set to HI_TRUE.
pix_clk	Pixel clock. The value of this parameter must be the same as the pixel clock of the input timing configured for the VO in the current version. You can obtain the value by querying the corresponding Video Electronics Standards Association (VESA) standard.

Parent topic: HDMI Peripherals