SIMA_COLORCONVERT
Description
This graph is responsible for color converting available frame/image from one color space to other color space. Options available for this color space conversion are mentioned below.
Graph Info
Overview
Graph Name |
SIMA_COLORCONVERT |
|---|---|
Graph ID |
0 |
Operations Supported |
SIMA_COLOR_BGR2RGB(0) SIMA_COLOR_RGB2BGR(1) SIMA_COLOR_BGR2GRAY(2) SIMA_COLOR_RGB2GRAY(3) SIMA_COLOR_IYUV2BGR(4) SIMA_COLOR_IYUV2NV12(5) SIMA_COLOR_NV12TOBGR (6) SIMA_COLOR_BGR2NV12 (7) SIMA_COLOR_RGB2NV12 (8) SIMA_COLOR_NV12TORGB (9) |
Available Since Yocto Build |
B668 BGR2NV12 available from build → B758 RGB2NV12 available from build → B760 |
Example Config
Below is the example config json for this graph. We need to use such config for configuring the EV74 graph first. For this purpose, we need a CVU Configuration Application developed in C++.
{
"version": 0.1,
"node_name": "cvu-color-convert",
"simaai__params": {
"params": 15,
"index": 0,
"cpu": 1,
"next_cpu": 2,
"graph_id": 0,
"input_width": 1920,
"input_height": 1080,
"output_width": 1920,
"output_height": 1080,
"batch_size": 1,
"conv_type": 0,
"format": 1,
"in_type": 0,
"no_of_outbuf": 1,
"out_type": 2,
"out_sz": 6220800,
"ibufname": "in-img-source",
"debug": 0,
"dump_data": 1
}
}
Parameters
Parameter Name |
Parameter Description |
Data Type |
Default |
Min |
Max |
|---|---|---|---|---|---|
input_width |
Width of the input image |
int32_t |
1920 |
1 |
4096 |
input_height |
Height of the input image |
int32_t |
1080 |
1 |
4096 |
output_width |
Width of the output image (needs to be same as the |
int32_t |
1920 |
1 |
4096 |
output_height |
Height of the output image (needs to be same as the |
int32_t |
1080 |
1 |
4096 |
batch_size |
Number of input images to be preprocessed at once |
int32_t |
1 |
1 |
50 |
conv_type |
Color conversion type: SIMA_COLOR_BGR2RGB(0) SIMA_COLOR_RGB2BGR(1) SIMA_COLOR_BGR2GRAY(2) SIMA_COLOR_RGB2GRAY(3) SIMA_COLOR_IYUV2BGR(4) SIMA_COLOR_IYUV2NV12(5) SIMA_COLOR_NV12TOBGR (6) SIMA_COLOR_BGR2NV12 (7) SIMA_COLOR_RGB2NV12 (8) SIMA_COLOR_NV12TORGB (9) |
int32_t |
0 |
0 |
9 |
Note
Please note that, the out_sz in above json needs to be calculated based on your output format.
Ex. If the output format is RGB, then the out_sz will be output_height * output_width * 3.
Here, 3 is the number of channels
CVU Configuration Application
Note
The need to write, build and execute a dependent application for the CVU will be removed in an upcoming release.
To configure any CVU graph, a C++ CVU Configuration Application must be cross-compiled and executed on the board before using the CVU. Multiple graphs can be pre-programmed into the CVU before running any application. This guide provides a pre-written C++ application for download for each graph that can be cross-compiled on Palette, and executed on the board prior to running the simaaiprocesscvu GStreamer plugin. An pre-compiled version is also included for direct use. If you encounter issues, please re-compile the application from the sources provided.
How to compile using the files below
Please refer to How to compile CVU Configuration Application? for more info.
Directory structure
.
├── CMakeLists.txt
├── cvu_cfg_graph.cpp
└── cvu_cfg_main.cpp
Code files
1#define SIMA_IPC_CODE_GRAPH_SIMA_COLORCONVERT (0)
2#define INPUT_WIDTH (1)
3#define INPUT_HEIGHT (2)
4#define OUTPUT_WIDTH (3)
5#define OUTPUT_HEIGHT (4)
6#define BATCH_SIZE (5)
7#define CONV_TYPE (6)
8
9void configure_colorconvert(const char *json_in)
10{
11 simaai_params_t *params = parser_node_struct_init();
12
13 uint8_t *buf = (uint8_t *)calloc(1, sizeof(uint8_t) * 16);
14
15 int val = *((int *)parser_get_int(params, "input_width"));
16 send_i32_param(2, SIMA_IPC_CODE_GRAPH_SIMA_COLORCONVERT, INPUT_WIDTH, buf, val);
17
18 val = *((int *)parser_get_int(params, "input_height"));
19 send_i32_param(2, SIMA_IPC_CODE_GRAPH_SIMA_COLORCONVERT, INPUT_HEIGHT, buf, val);
20
21 val = *((int *)parser_get_int(params, "output_width"));
22 send_i32_param(2, SIMA_IPC_CODE_GRAPH_SIMA_COLORCONVERT, OUTPUT_WIDTH, buf, val);
23
24 val = *((int *)parser_get_int(params, "output_height"));
25 send_i32_param(2, SIMA_IPC_CODE_GRAPH_SIMA_COLORCONVERT, OUTPUT_HEIGHT, buf, val);
26
27 val = *((int *)parser_get_int(params, "batch_size"));
28 send_i32_param(2, SIMA_IPC_CODE_GRAPH_SIMA_COLORCONVERT, BATCH_SIZE, buf, val);
29
30 val = *((int *)parser_get_int(params, "conv_type"));
31 send_i32_param(2, SIMA_IPC_CODE_GRAPH_SIMA_COLORCONVERT, CONV_TYPE, buf, val);
32
33 std::cout << "Completed Colorconvert Graph Configure \n";
34 free(buf);
35}
1 #include <getopt.h>
2 #include <sys/stat.h>
3 #include <unistd.h>
4
5 #include <cstring>
6 #include <iostream>
7
8 extern void configure_graph(const char *json_fpath);
9
10 bool is_valid_path(const char *path) {
11 struct stat buffer;
12 return (stat(path, &buffer) == 0);
13 }
14
15 int main(int argc, char **argv) {
16 const char *json_path = argv[1];
17
18 if(is_valid_path(json_path)) {
19 configure_graph(json_path);
20 } else {
21 std::cerr << "Invalid path: " << json_path << std::endl;
22 return 1;
23 }
24
25 return 0;
26 }
1 cmake_minimum_required(VERSION 3.16)
2
3 # set the project name
4 set(GRAPH_NAME "colorconvert_000")
5 set(PROJECT_NAME "CVU Graph Cfg. App.")
6
7 project("${PROJECT_NAME}"
8 VERSION 0.1
9 DESCRIPTION "CVU Graph Configuration Application"
10 LANGUAGES C CXX)
11
12 set(PIPELINE_SOURCES
13 cvu_cfg_graph.cpp)
14
15 execute_process(
16 COMMAND git rev-parse --abbrev-ref HEAD
17 WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
18 OUTPUT_VARIABLE GIT_BRANCH
19 OUTPUT_STRIP_TRAILING_WHITESPACE
20 )
21
22 # Get the latest abbreviated commit hash of the working branch
23 execute_process(
24 COMMAND git log -1 --format=%h
25 WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
26 OUTPUT_VARIABLE GIT_COMMIT_HASH
27 OUTPUT_STRIP_TRAILING_WHITESPACE
28 )
29
30 link_directories(${CMAKE_INSTALL_DIR}/core
31 ${CMAKE_INSTALL_DIR}/gst
32 )
33
34 include(GNUInstallDirs)
35
36 # ev-configuration genertion executable
37 set(EV_EXEC_NAME "${GRAPH_NAME}_cvu_cfg_app")
38
39 add_executable(${EV_EXEC_NAME}
40 cvu_cfg_main.cpp
41 cvu_cfg_graph.cpp)
42
43 target_link_libraries(${EV_EXEC_NAME}
44 PUBLIC
45 simaaiparser
46 evhelpers)
47
48 INSTALL(TARGETS "${EV_EXEC_NAME}")