video_common: edid: Added function headers for commenting.
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
This commit is contained in:
Andrei-Liviu Simion
Nava kishore Manne
parent
b1c3f35b17
commit
c1f33ddd8f
3 changed files with 130 additions and 14 deletions
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@ -32,7 +32,7 @@
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/******************************************************************************/
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/**
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*
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* @file xvidc_edid_print.c
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* @file xvidc_edid_print_example.c
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*
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* Contains an example that, given a supplied base Extended Display
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* Identification Data (EDID) structure, will parse, decode, and print its
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@ -74,6 +74,20 @@ static u8 Edid_CalculateChecksum(u8 *Data, u8 Size);
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/*************************** Function Definitions *****************************/
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/******************************************************************************/
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/**
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* This function decodes the supplied base Extended Display Identification Data
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* (EDID) structure and prints its contents.
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*
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* @param EdidRaw is the base EDID structure to decode and print.
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*
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* @return
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* - XST_SUCCESS if the supplied base EDID has a valid EDID header.
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* - XST_FAILURE otherwise. The EDID wasn't decoded further.
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*
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* @note None.
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*
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*******************************************************************************/
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u32 Edid_PrintDecodeBase(u8 *EdidRaw)
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{
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/* Check valid header. */
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@ -114,6 +128,20 @@ u32 Edid_PrintDecodeBase(u8 *EdidRaw)
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return XST_SUCCESS;
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}
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/******************************************************************************/
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/**
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* This function decodes the supplied base Extended Display Identification Data
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* (EDID) structure for supported video timing modes and prints all video
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* timing modes that are both supported in the EDID and listed in the
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* XVidC_VideoTimingModes table.
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*
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* @param EdidRaw is the base EDID structure to decode.
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*
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* @return None.
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*
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* @note None.
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*
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*******************************************************************************/
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void Edid_PrintSuppVmTable(u8 *EdidRaw)
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{
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u8 Index;
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@ -129,6 +157,18 @@ void Edid_PrintSuppVmTable(u8 *EdidRaw)
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}
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}
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/******************************************************************************/
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/**
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* This function decodes the supplied base Extended Display Identification Data
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* (EDID) structure for the vendor and product ID and prints this information.
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*
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* @param EdidRaw is the base EDID structure to decode.
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*
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* @return None.
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*
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* @note None.
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*
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*******************************************************************************/
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static void Edid_PrintBaseVPId(u8 *EdidRaw)
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{
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char ManName[4];
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@ -156,6 +196,19 @@ static void Edid_PrintBaseVPId(u8 *EdidRaw)
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}
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}
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/******************************************************************************/
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/**
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* This function decodes the supplied base Extended Display Identification Data
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* (EDID) structure for the EDID version and revision and prints this
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* information.
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*
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* @param EdidRaw is the base EDID structure to decode.
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*
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* @return None.
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*
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* @note None.
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*
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*******************************************************************************/
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static void Edid_PrintBaseVerRev(u8 *EdidRaw)
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{
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/* EDID structure version and revision. */
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@ -164,6 +217,19 @@ static void Edid_PrintBaseVerRev(u8 *EdidRaw)
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XVidC_EdidGetStructRev(EdidRaw));
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}
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/******************************************************************************/
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/**
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* This function decodes the supplied base Extended Display Identification Data
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* (EDID) structure for basic display parameters and features and prints this
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* information.
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*
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* @param EdidRaw is the base EDID structure to decode.
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*
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* @return None.
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*
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* @note None.
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*
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*******************************************************************************/
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static void Edid_PrintBaseBasicDisp(u8 *EdidRaw)
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{
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/* Basic display parameters and features. */
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@ -416,6 +482,18 @@ static void Edid_PrintBaseBasicDisp(u8 *EdidRaw)
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xil_printf("continuous frequency.\n");
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}
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/******************************************************************************/
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/**
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* This function decodes the supplied base Extended Display Identification Data
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* (EDID) structure for color characteristics and prints this information.
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*
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* @param EdidRaw is the base EDID structure to decode.
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*
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* @return None.
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*
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* @note None.
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*
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*******************************************************************************/
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static void Edid_PrintColorChar(u8 *EdidRaw)
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{
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xil_printf("Color characterisitics:\n");
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@ -445,6 +523,19 @@ static void Edid_PrintColorChar(u8 *EdidRaw)
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FLOAT_FRAC_TO_U32(XVidC_EdidGetCcWhiteY(EdidRaw), 1000000000));
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}
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/******************************************************************************/
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/**
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* This function decodes the supplied base Extended Display Identification Data
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* (EDID) structure for supported established timings and prints this
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* information.
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*
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* @param EdidRaw is the base EDID structure to decode.
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*
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* @return None.
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*
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* @note None.
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*
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*******************************************************************************/
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static void Edid_PrintEstTimings(u8 *EdidRaw)
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{
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xil_printf("Established timings:\n");
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@ -503,9 +594,20 @@ static void Edid_PrintEstTimings(u8 *EdidRaw)
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XVidC_EdidGetTimingsMan(EdidRaw));
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}
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/******************************************************************************/
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/**
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* This function decodes the supplied base Extended Display Identification Data
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* (EDID) structure for supported standard timings and prints this information.
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*
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* @param EdidRaw is the base EDID structure to decode.
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*
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* @return None.
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*
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* @note None.
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*
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*******************************************************************************/
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static void Edid_PrintStdTimings(u8 *EdidRaw)
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{
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/* Standard timings. */
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u8 Index;
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xil_printf("Standard timings:\n");
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@ -522,6 +624,19 @@ static void Edid_PrintStdTimings(u8 *EdidRaw)
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}
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}
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/******************************************************************************/
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/**
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* This function decodes the supplied base Extended Display Identification Data
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* (EDID) structure for the preferred timing mode (PTM) and prints its timing
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* information.
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*
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* @param EdidRaw is the base EDID structure to decode.
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*
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* @return None.
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*
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* @note None.
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*
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*******************************************************************************/
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static void Edid_PrintPtm(u8 *EdidRaw)
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{
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u8 *Ptm;
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@ -605,6 +720,18 @@ static void Edid_PrintPtm(u8 *EdidRaw)
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"Yes." : "No (progressive).");
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}
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/******************************************************************************/
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/**
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* This function calculates a checksum.
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*
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* @param Data is a pointer to the data to calculate the checksum on.
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* @param Size the number of bytes of Data to calculate the checksum on.
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*
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* @return The checksum value (truncated to a 8 bits).
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*
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* @note None.
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*
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*******************************************************************************/
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static u8 Edid_CalculateChecksum(u8 *Data, u8 Size)
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{
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u8 Index;
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@ -32,7 +32,7 @@
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/******************************************************************************/
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/**
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*
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* @file xvidc_edid_print.h
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* @file xvidc_edid_print_example.h
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*
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* Contains an example that, given a supplied base Extended Display
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* Identification Data (EDID) structure, will parse, decode, and print its
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@ -59,7 +59,6 @@
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/******************************************************************************/
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/**
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*
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* This function calculates pixel clock based on the inputs.
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*
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* @param HTotal specifies horizontal total.
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@ -78,7 +77,6 @@ u32 XVidC_GetPixelClockHzByHVFr(u32 HTotal, u32 VTotal, u8 FrameRate)
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/******************************************************************************/
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/**
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*
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* This function calculates pixel clock from video mode.
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*
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* @param VmId specifies the resolution id.
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@ -118,7 +116,6 @@ u32 XVidC_GetPixelClockHzByVmId(XVidC_VideoMode VmId)
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/******************************************************************************/
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/**
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*
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* This function check input video mode is interlaced/progressive.
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*
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* @param VmId specifies the resolution id.
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@ -141,7 +138,6 @@ XVidC_VideoFormat XVidC_GetVideoFormat(XVidC_VideoMode VmId)
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/******************************************************************************/
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/**
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*
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* This function returns the Video Mode ID that matches the detected input
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* width, height, frame rate and I/P flag
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*
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@ -244,7 +240,6 @@ XVidC_VideoMode XVidC_GetVideoModeId(u32 Width, u32 Height, u32 FrameRate,
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/******************************************************************************/
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/**
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*
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* This function returns the pointer to video mode data at index provided.
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*
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* @param VmId specifies the resolution id.
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@ -289,7 +284,6 @@ const char *XVidC_GetVideoModeStr(XVidC_VideoMode VmId)
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/******************************************************************************/
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/**
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*
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* This function returns the frame rate name for index specified.
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*
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* @param VmId specifies the resolution id.
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@ -362,7 +356,6 @@ char *XVidC_GetFrameRateStr(XVidC_VideoMode VmId)
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/******************************************************************************/
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/**
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*
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* This function returns the color format name for index specified.
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*
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* @param ColorSpaceId specifies the index of color space.
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@ -398,7 +391,6 @@ char *XVidC_GetColorFormatStr(XVidC_ColorSpace ColorSpaceId)
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/******************************************************************************/
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/**
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*
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* This function returns the frame rate for index specified.
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*
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* @param VmId specifies the resolution id.
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@ -420,7 +412,6 @@ XVidC_FrameRate XVidC_GetFrameRate(XVidC_VideoMode VmId)
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/******************************************************************************/
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/**
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*
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* This function returns the timing parameters for specified resolution.
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*
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* @param VmId specifies the resolution id.
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@ -442,7 +433,6 @@ const XVidC_VideoTiming *XVidC_GetTimingInfo(XVidC_VideoMode VmId)
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/******************************************************************************/
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/**
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*
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* This function prints the stream information on STDIO/UART console.
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*
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* @param Stream is a pointer to video stream.
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@ -468,7 +458,6 @@ void XVidC_ReportStreamInfo(XVidC_VideoStream *Stream)
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/******************************************************************************/
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/**
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*
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* This function prints timing information on STDIO/Uart console.
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*
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* @param Timing is a pointer to Video Timing structure of the stream.
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