From 9f95ff5b6ba01db09552b84a0ab79607060a2666 Mon Sep 17 00:00:00 2001 From: Ali Labbene Date: Wed, 11 Dec 2019 08:59:21 +0100 Subject: Official ARM version: v5.4.0 Add CMSIS V5.4.0, please refer to index.html available under \docs folder. Note: content of \CMSIS\Core\Include has been copied under \Include to keep the same structure used in existing projects, and thus avoid projects mass update Note: the following components have been removed from ARM original delivery (as not used in ST packages) - CMSIS_EW2018.pdf - .gitattributes - .gitignore - \Device - \CMSIS - \CoreValidation - \DAP - \Documentation - \DoxyGen - \Driver - \Pack - \RTOS\CMSIS_RTOS_Tutorial.pdf - \RTOS\RTX - \RTOS\Template - \RTOS2\RTX - \Utilities - All ARM/GCC projects files are deleted from \DSP, \RTOS and \RTOS2 Change-Id: Ia026c3f0f0d016627a4fb5a9032852c33d24b4d3 --- docs/DSP/html/group__DCT4__IDCT4__Table.html | 764 +++++++++++++++++++++++++++ 1 file changed, 764 insertions(+) create mode 100644 docs/DSP/html/group__DCT4__IDCT4__Table.html (limited to 'docs/DSP/html/group__DCT4__IDCT4__Table.html') diff --git a/docs/DSP/html/group__DCT4__IDCT4__Table.html b/docs/DSP/html/group__DCT4__IDCT4__Table.html new file mode 100644 index 0000000..0625c2e --- /dev/null +++ b/docs/DSP/html/group__DCT4__IDCT4__Table.html @@ -0,0 +1,764 @@ + + + + + +DCT Type IV Tables +CMSIS-DSP: DCT Type IV Tables + + + + + + + + + + + + + + +
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+
CMSIS-DSP +  Version 1.5.2 +
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CMSIS DSP Software Library
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+Variables
+
+
DCT Type IV Tables
DCT Type IV Functions
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+Variables

static const float32_t Weights_128 [256]
 
static const float32_t Weights_512 [1024]
 
static const float32_t Weights_2048 [4096]
 
static const float32_t Weights_8192 [16384]
 
static const float32_t cos_factors_128 [128]
 
static const float32_t cos_factors_512 [512]
 
static const float32_t cos_factors_2048 [2048]
 
static const float32_t cos_factors_8192 [8192]
 
static const q15_t ALIGN4 WeightsQ15_128 [256]
 
static const q15_t ALIGN4 WeightsQ15_512 [1024]
 
static const q15_t ALIGN4 WeightsQ15_2048 [4096]
 
static const q15_t ALIGN4 WeightsQ15_8192 [16384]
 
static const q15_t ALIGN4 cos_factorsQ15_128 [128]
 
static const q15_t ALIGN4 cos_factorsQ15_512 [512]
 
static const q15_t ALIGN4 cos_factorsQ15_2048 [2048]
 
static const q15_t ALIGN4 cos_factorsQ15_8192 [8192]
 
static const q31_t WeightsQ31_128 [256]
 
static const q31_t WeightsQ31_512 [1024]
 
static const q31_t WeightsQ31_2048 [4096]
 
static const q31_t WeightsQ31_8192 [16384]
 
static const q31_t cos_factorsQ31_128 [128]
 
static const q31_t cos_factorsQ31_512 [512]
 
static const q31_t cos_factorsQ31_2048 [2048]
 
static const q31_t cos_factorsQ31_8192 [8192]
 
+

Description

+

Variable Documentation

+ +
+
+ + + + + +
+ + + + +
const float32_t cos_factors_128[128]
+ 		+static
+
+
cosFactor tables are generated using the formula : 
cos_factors[n] = 2 * cos((2n+1)*pi/(4*N))
+
C command to generate the table
+
 for(i = 0; i< N; i++)
+{
+   cos_factors[i]= 2 * cos((2*i+1)*c/2);
+}
+
where N is the number of factors to generate and c is pi/(2*N)
+ +

Referenced by arm_dct4_init_f32().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const float32_t cos_factors_2048[2048]
+ 		+static
+
+ +

Referenced by arm_dct4_init_f32().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const float32_t cos_factors_512[512]
+ 		+static
+
+ +

Referenced by arm_dct4_init_f32().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const float32_t cos_factors_8192[8192]
+ 		+static
+
+ +

Referenced by arm_dct4_init_f32().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q15_t ALIGN4 cos_factorsQ15_128[128]
+ 		+static
+
+
cosFactor tables are generated using the formula : 
 cos_factors[n] = 2 * cos((2n+1)*pi/(4*N))
+
C command to generate the table 
+for(i = 0; i< N; i++)
+{
+  cos_factors[i]= 2 * cos((2*i+1)*c/2);
+}
+
where N is the number of factors to generate and c is pi/(2*N)
+
Then converted to q15 format by multiplying with 2^31 and saturated if required.
+ +

Referenced by arm_dct4_init_q15().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q15_t ALIGN4 cos_factorsQ15_2048[2048]
+ 		+static
+
+ +

Referenced by arm_dct4_init_q15().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q15_t ALIGN4 cos_factorsQ15_512[512]
+ 		+static
+
+ +

Referenced by arm_dct4_init_q15().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q15_t ALIGN4 cos_factorsQ15_8192[8192]
+ 		+static
+
+ +

Referenced by arm_dct4_init_q15().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q31_t cos_factorsQ31_128[128]
+ 		+static
+
+
cosFactor tables are generated using the formula : 
cos_factors[n] = 2 * cos((2n+1)*pi/(4*N))
+
C command to generate the table 
+for(i = 0; i< N; i++)
+{
+  cos_factors[i]= 2 * cos((2*i+1)*c/2);
+}
+
where N is the number of factors to generate and c is pi/(2*N)
+
Then converted to q31 format by multiplying with 2^31 and saturated if required.
+ +

Referenced by arm_dct4_init_q31().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q31_t cos_factorsQ31_2048[2048]
+ 		+static
+
+ +

Referenced by arm_dct4_init_q31().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q31_t cos_factorsQ31_512[512]
+ 		+static
+
+ +

Referenced by arm_dct4_init_q31().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q31_t cos_factorsQ31_8192[8192]
+ 		+static
+
+ +

Referenced by arm_dct4_init_q31().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const float32_t Weights_128[256]
+ 		+static
+
+
Weights tables are generated using the formula : 
weights[n] = e^(-j*n*pi/(2*N))
+
C command to generate the table 
+for(i = 0; i< N; i++)
+{
+   weights[2*i]= cos(i*c);
+   weights[(2*i)+1]= -sin(i * c);
+}
+
Where N is the Number of weights to be calculated and c is pi/(2*N)
+
In the tables below the real and imaginary values are placed alternatively, hence the array length is 2*N.
+ +

Referenced by arm_dct4_init_f32().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const float32_t Weights_2048[4096]
+ 		+static
+
+ +

Referenced by arm_dct4_init_f32().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const float32_t Weights_512[1024]
+ 		+static
+
+ +

Referenced by arm_dct4_init_f32().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const float32_t Weights_8192[16384]
+ 		+static
+
+ +

Referenced by arm_dct4_init_f32().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q15_t ALIGN4 WeightsQ15_128[256]
+ 		+static
+
+
Weights tables are generated using the formula : 
weights[n] = e^(-j*n*pi/(2*N))
+
C command to generate the table 
+for(i = 0; i< N; i++)
+{
+  weights[2*i]= cos(i*c);
+  weights[(2*i)+1]= -sin(i * c);
+}
+
where N is the Number of weights to be calculated and c is pi/(2*N)
+
Converted the output to q15 format by multiplying with 2^31 and saturated if required.
+
In the tables below the real and imaginary values are placed alternatively, hence the array length is 2*N.
+ +

Referenced by arm_dct4_init_q15().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q15_t ALIGN4 WeightsQ15_2048[4096]
+ 		+static
+
+ +

Referenced by arm_dct4_init_q15().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q15_t ALIGN4 WeightsQ15_512[1024]
+ 		+static
+
+ +

Referenced by arm_dct4_init_q15().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q15_t ALIGN4 WeightsQ15_8192[16384]
+ 		+static
+
+ +

Referenced by arm_dct4_init_q15().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q31_t WeightsQ31_128[256]
+ 		+static
+
+
Weights tables are generated using the formula : 
weights[n] = e^(-j*n*pi/(2*N))
+
C command to generate the table 
+for(i = 0; i< N; i++)
+{
+  weights[2*i]= cos(i*c);
+  weights[(2*i)+1]= -sin(i * c);
+}
+
where N is the Number of weights to be calculated and c is pi/(2*N)
+
Convert the output to q31 format by multiplying with 2^31 and saturated if required.
+
In the tables below the real and imaginary values are placed alternatively, hence the array length is 2*N.
+ +

Referenced by arm_dct4_init_q31().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q31_t WeightsQ31_2048[4096]
+ 		+static
+
+ +

Referenced by arm_dct4_init_q31().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q31_t WeightsQ31_512[1024]
+ 		+static
+
+ +

Referenced by arm_dct4_init_q31().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const q31_t WeightsQ31_8192[16384]
+ 		+static
+
+ +

Referenced by arm_dct4_init_q31().

+ +
+
+
+
+ + + + -- cgit