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Code Issues Releases Activity

lavu/opencl:optimize compile kernel operation

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Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
highgod0401 2013-04-22 10:10:54 +08:00 committed by Michael Niedermayer
parent 80d4d3a41d
commit 6d7ec4fc2e
1 changed files with 16 additions and 29 deletions
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45
libavutil/opencl.c
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@ -544,57 +544,44 @@ static int init_opencl_env(OpenclContext *opencl_ctx, AVOpenCLExternalEnv *ext_o
static int compile_kernel_file(OpenclContext *opencl_ctx)
{
cl_int status;
char *temp, *source_str = NULL;
size_t source_str_len = 0;
int i, ret = 0;
int i, kernel_code_count = 0;
const char *kernel_code[MAX_KERNEL_CODE_NUM] = {NULL};
size_t kernel_code_len[MAX_KERNEL_CODE_NUM] = {0};
for (i = 0; i < opencl_ctx->kernel_code_count; i++) {
if (!opencl_ctx->kernel_code[i].is_compiled)
source_str_len += strlen(opencl_ctx->kernel_code[i].kernel_string);
}
if (!source_str_len) {
return 0;
}
source_str = av_mallocz(source_str_len + 1);
if (!source_str) {
return AVERROR(ENOMEM);
}
temp = source_str;
for (i = 0; i < opencl_ctx->kernel_code_count; i++) {
if (!opencl_ctx->kernel_code[i].is_compiled) {
memcpy(temp, opencl_ctx->kernel_code[i].kernel_string,
strlen(opencl_ctx->kernel_code[i].kernel_string));
kernel_code[kernel_code_count] = opencl_ctx->kernel_code[i].kernel_string;
kernel_code_len[kernel_code_count] = strlen(opencl_ctx->kernel_code[i].kernel_string);
opencl_ctx->kernel_code[i].is_compiled = 1;
temp += strlen(opencl_ctx->kernel_code[i].kernel_string);
kernel_code_count++;
}
}
if (!kernel_code_count)
return 0;
/* create a CL program using the kernel source */
opencl_ctx->programs[opencl_ctx->program_count] = clCreateProgramWithSource(opencl_ctx->context,
1, (const char **)(&source_str),
&source_str_len, &status);
kernel_code_count,
kernel_code,
kernel_code_len,
&status);
if(status != CL_SUCCESS) {
av_log(opencl_ctx, AV_LOG_ERROR,
"Could not create OpenCL program with source code: %s\n", opencl_errstr(status));
ret = AVERROR_EXTERNAL;
goto end;
return AVERROR_EXTERNAL;
}
if (!opencl_ctx->programs[opencl_ctx->program_count]) {
av_log(opencl_ctx, AV_LOG_ERROR, "Created program is NULL\n");
ret = AVERROR_EXTERNAL;
goto end;
return AVERROR_EXTERNAL;
}
status = clBuildProgram(opencl_ctx->programs[opencl_ctx->program_count], 1, &(opencl_ctx->device_id),
opencl_ctx->build_options, NULL, NULL);
if (status != CL_SUCCESS) {
av_log(opencl_ctx, AV_LOG_ERROR,
"Could not compile OpenCL kernel: %s\n", opencl_errstr(status));
ret = AVERROR_EXTERNAL;
goto end;
return AVERROR_EXTERNAL;
}
opencl_ctx->program_count++;
end:
av_free(source_str);
return ret;
return 0;
}
int av_opencl_init(AVOpenCLExternalEnv *ext_opencl_env)