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FFmpeg/libavutil/opencl.c
Maneesh Gupta 91305c6026 OpenCL: Fix ABI incompatibility issues 
AVOpenCLDeviceNode and AVOpenCLPlatformNode used fixed static buffer for holding the device and platform name.
This patch modifies these structures to use pointers instead. The memory required to hold the names is
now dynamically allocated, the size for which is determined by querying appropriate OpenCL runtime APIs.

Signed-off-by: Maneesh Gupta <maneesh.gupta@amd.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-04-28 12:28:53 +02:00

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/*
* Copyright (C) 2012 Peng Gao <peng@multicorewareinc.com>
* Copyright (C) 2012 Li Cao <li@multicorewareinc.com>
* Copyright (C) 2012 Wei Gao <weigao@multicorewareinc.com>
* Copyright (C) 2013 Lenny Wang <lwanghpc@gmail.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "opencl.h"
#include "avstring.h"
#include "log.h"
#include "avassert.h"
#include "opt.h"
#if HAVE_THREADS
#if HAVE_PTHREADS
#include <pthread.h>
#elif HAVE_W32THREADS
#include "compat/w32pthreads.h"
#elif HAVE_OS2THREADS
#include "compat/os2threads.h"
#endif
#include "atomic.h"
static volatile pthread_mutex_t *atomic_opencl_lock = NULL;
#define LOCK_OPENCL pthread_mutex_lock(atomic_opencl_lock)
#define UNLOCK_OPENCL pthread_mutex_unlock(atomic_opencl_lock)
#else
#define LOCK_OPENCL
#define UNLOCK_OPENCL
#endif
#define MAX_KERNEL_CODE_NUM 200
typedef struct {
int is_compiled;
const char *kernel_string;
} KernelCode;
typedef struct {
const AVClass *class;
int log_offset;
void *log_ctx;
int init_count;
int opt_init_flag;
/**
* if set to 1, the OpenCL environment was created by the user and
* passed as AVOpenCLExternalEnv when initing ,0:created by opencl wrapper.
*/
int is_user_created;
int platform_idx;
int device_idx;
cl_platform_id platform_id;
cl_device_type device_type;
cl_context context;
cl_device_id device_id;
cl_command_queue command_queue;
int kernel_code_count;
KernelCode kernel_code[MAX_KERNEL_CODE_NUM];
AVOpenCLDeviceList device_list;
} OpenclContext;
#define OFFSET(x) offsetof(OpenclContext, x)
static const AVOption opencl_options[] = {
{ "platform_idx", "set platform index value", OFFSET(platform_idx), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX},
{ "device_idx", "set device index value", OFFSET(device_idx), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX},
{ NULL }
};
static const AVClass openclutils_class = {
.class_name = "OPENCLUTILS",
.option = opencl_options,
.item_name = av_default_item_name,
.version = LIBAVUTIL_VERSION_INT,
.log_level_offset_offset = offsetof(OpenclContext, log_offset),
.parent_log_context_offset = offsetof(OpenclContext, log_ctx),
};
static OpenclContext opencl_ctx = {&openclutils_class};
static const cl_device_type device_type[] = {CL_DEVICE_TYPE_GPU, CL_DEVICE_TYPE_CPU};
typedef struct {
int err_code;
const char *err_str;
} OpenclErrorMsg;
static const OpenclErrorMsg opencl_err_msg[] = {
{CL_DEVICE_NOT_FOUND, "DEVICE NOT FOUND"},
{CL_DEVICE_NOT_AVAILABLE, "DEVICE NOT AVAILABLE"},
{CL_COMPILER_NOT_AVAILABLE, "COMPILER NOT AVAILABLE"},
{CL_MEM_OBJECT_ALLOCATION_FAILURE, "MEM OBJECT ALLOCATION FAILURE"},
{CL_OUT_OF_RESOURCES, "OUT OF RESOURCES"},
{CL_OUT_OF_HOST_MEMORY, "OUT OF HOST MEMORY"},
{CL_PROFILING_INFO_NOT_AVAILABLE, "PROFILING INFO NOT AVAILABLE"},
{CL_MEM_COPY_OVERLAP, "MEM COPY OVERLAP"},
{CL_IMAGE_FORMAT_MISMATCH, "IMAGE FORMAT MISMATCH"},
{CL_IMAGE_FORMAT_NOT_SUPPORTED, "IMAGE FORMAT NOT_SUPPORTED"},
{CL_BUILD_PROGRAM_FAILURE, "BUILD PROGRAM FAILURE"},
{CL_MAP_FAILURE, "MAP FAILURE"},
{CL_MISALIGNED_SUB_BUFFER_OFFSET, "MISALIGNED SUB BUFFER OFFSET"},
{CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST, "EXEC STATUS ERROR FOR EVENTS IN WAIT LIST"},
{CL_COMPILE_PROGRAM_FAILURE, "COMPILE PROGRAM FAILURE"},
{CL_LINKER_NOT_AVAILABLE, "LINKER NOT AVAILABLE"},
{CL_LINK_PROGRAM_FAILURE, "LINK PROGRAM FAILURE"},
{CL_DEVICE_PARTITION_FAILED, "DEVICE PARTITION FAILED"},
{CL_KERNEL_ARG_INFO_NOT_AVAILABLE, "KERNEL ARG INFO NOT AVAILABLE"},
{CL_INVALID_VALUE, "INVALID VALUE"},
{CL_INVALID_DEVICE_TYPE, "INVALID DEVICE TYPE"},
{CL_INVALID_PLATFORM, "INVALID PLATFORM"},
{CL_INVALID_DEVICE, "INVALID DEVICE"},
{CL_INVALID_CONTEXT, "INVALID CONTEXT"},
{CL_INVALID_QUEUE_PROPERTIES, "INVALID QUEUE PROPERTIES"},
{CL_INVALID_COMMAND_QUEUE, "INVALID COMMAND QUEUE"},
{CL_INVALID_HOST_PTR, "INVALID HOST PTR"},
{CL_INVALID_MEM_OBJECT, "INVALID MEM OBJECT"},
{CL_INVALID_IMAGE_FORMAT_DESCRIPTOR, "INVALID IMAGE FORMAT DESCRIPTOR"},
{CL_INVALID_IMAGE_SIZE, "INVALID IMAGE SIZE"},
{CL_INVALID_SAMPLER, "INVALID SAMPLER"},
{CL_INVALID_BINARY, "INVALID BINARY"},
{CL_INVALID_BUILD_OPTIONS, "INVALID BUILD OPTIONS"},
{CL_INVALID_PROGRAM, "INVALID PROGRAM"},
{CL_INVALID_PROGRAM_EXECUTABLE, "INVALID PROGRAM EXECUTABLE"},
{CL_INVALID_KERNEL_NAME, "INVALID KERNEL NAME"},
{CL_INVALID_KERNEL_DEFINITION, "INVALID KERNEL DEFINITION"},
{CL_INVALID_KERNEL, "INVALID KERNEL"},
{CL_INVALID_ARG_INDEX, "INVALID ARG INDEX"},
{CL_INVALID_ARG_VALUE, "INVALID ARG VALUE"},
{CL_INVALID_ARG_SIZE, "INVALID ARG_SIZE"},
{CL_INVALID_KERNEL_ARGS, "INVALID KERNEL ARGS"},
{CL_INVALID_WORK_DIMENSION, "INVALID WORK DIMENSION"},
{CL_INVALID_WORK_GROUP_SIZE, "INVALID WORK GROUP SIZE"},
{CL_INVALID_WORK_ITEM_SIZE, "INVALID WORK ITEM SIZE"},
{CL_INVALID_GLOBAL_OFFSET, "INVALID GLOBAL OFFSET"},
{CL_INVALID_EVENT_WAIT_LIST, "INVALID EVENT WAIT LIST"},
{CL_INVALID_EVENT, "INVALID EVENT"},
{CL_INVALID_OPERATION, "INVALID OPERATION"},
{CL_INVALID_GL_OBJECT, "INVALID GL OBJECT"},
{CL_INVALID_BUFFER_SIZE, "INVALID BUFFER SIZE"},
{CL_INVALID_MIP_LEVEL, "INVALID MIP LEVEL"},
{CL_INVALID_GLOBAL_WORK_SIZE, "INVALID GLOBAL WORK SIZE"},
{CL_INVALID_PROPERTY, "INVALID PROPERTY"},
{CL_INVALID_IMAGE_DESCRIPTOR, "INVALID IMAGE DESCRIPTOR"},
{CL_INVALID_COMPILER_OPTIONS, "INVALID COMPILER OPTIONS"},
{CL_INVALID_LINKER_OPTIONS, "INVALID LINKER OPTIONS"},
{CL_INVALID_DEVICE_PARTITION_COUNT, "INVALID DEVICE PARTITION COUNT"},
};
const char *av_opencl_errstr(cl_int status)
{
int i;
for (i = 0; i < FF_ARRAY_ELEMS(opencl_err_msg); i++) {
if (opencl_err_msg[i].err_code == status)
return opencl_err_msg[i].err_str;
}
return "unknown error";
}
static void free_device_list(AVOpenCLDeviceList *device_list)
{
int i, j;
if (!device_list)
return;
for (i = 0; i < device_list->platform_num; i++) {
if (!device_list->platform_node[i])
continue;
for (j = 0; j < device_list->platform_node[i]->device_num; j++) {
av_freep(&(device_list->platform_node[i]->device_node[j]->device_name));
av_freep(&(device_list->platform_node[i]->device_node[j]));
}
av_freep(&device_list->platform_node[i]->device_node);
av_freep(&(device_list->platform_node[i]->platform_name));
av_freep(&device_list->platform_node[i]);
}
av_freep(&device_list->platform_node);
device_list->platform_num = 0;
}
static int get_device_list(AVOpenCLDeviceList *device_list)
{
cl_int status;
int i, j, k, device_num, total_devices_num, ret = 0;
int *devices_num;
cl_platform_id *platform_ids = NULL;
cl_device_id *device_ids = NULL;
AVOpenCLDeviceNode *device_node = NULL;
size_t platform_name_size = 0;
size_t device_name_size = 0;
status = clGetPlatformIDs(0, NULL, &device_list->platform_num);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not get OpenCL platform ids: %s\n", av_opencl_errstr(status));
return AVERROR_EXTERNAL;
}
platform_ids = av_mallocz_array(device_list->platform_num, sizeof(cl_platform_id));
if (!platform_ids)
return AVERROR(ENOMEM);
status = clGetPlatformIDs(device_list->platform_num, platform_ids, NULL);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not get OpenCL platform ids: %s\n", av_opencl_errstr(status));
ret = AVERROR_EXTERNAL;
goto end;
}
device_list->platform_node = av_mallocz_array(device_list->platform_num, sizeof(AVOpenCLPlatformNode *));
if (!device_list->platform_node) {
ret = AVERROR(ENOMEM);
goto end;
}
devices_num = av_mallocz(sizeof(int) * FF_ARRAY_ELEMS(device_type));
if (!devices_num) {
ret = AVERROR(ENOMEM);
goto end;
}
for (i = 0; i < device_list->platform_num; i++) {
device_list->platform_node[i] = av_mallocz(sizeof(AVOpenCLPlatformNode));
if (!device_list->platform_node[i]) {
ret = AVERROR(ENOMEM);
goto end;
}
device_list->platform_node[i]->platform_id = platform_ids[i];
status = clGetPlatformInfo(platform_ids[i], CL_PLATFORM_VENDOR,
0, NULL, &platform_name_size);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_WARNING,
"Could not get size of platform name: %s\n", av_opencl_errstr(status));
} else {
device_list->platform_node[i]->platform_name = av_malloc(platform_name_size * sizeof(char));
if (!device_list->platform_node[i]->platform_name) {
av_log(&opencl_ctx, AV_LOG_WARNING,
"Could not allocate memory for device name: %s\n", av_opencl_errstr(status));
} else {
status = clGetPlatformInfo(platform_ids[i], CL_PLATFORM_VENDOR,
platform_name_size * sizeof(char),
device_list->platform_node[i]->platform_name, NULL);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_WARNING,
"Could not get platform name: %s\n", av_opencl_errstr(status));
}
}
}
total_devices_num = 0;
for (j = 0; j < FF_ARRAY_ELEMS(device_type); j++) {
status = clGetDeviceIDs(device_list->platform_node[i]->platform_id,
device_type[j], 0, NULL, &devices_num[j]);
total_devices_num += devices_num[j];
}
device_list->platform_node[i]->device_node = av_mallocz_array(total_devices_num, sizeof(AVOpenCLDeviceNode *));
if (!device_list->platform_node[i]->device_node) {
ret = AVERROR(ENOMEM);
goto end;
}
for (j = 0; j < FF_ARRAY_ELEMS(device_type); j++) {
if (devices_num[j]) {
device_ids = av_mallocz_array(devices_num[j], sizeof(cl_device_id));
if (!device_ids) {
ret = AVERROR(ENOMEM);
goto end;
}
status = clGetDeviceIDs(device_list->platform_node[i]->platform_id, device_type[j],
devices_num[j], device_ids, NULL);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_WARNING,
"Could not get device ID: %s:\n", av_opencl_errstr(status));
av_freep(&device_ids);
continue;
}
for (k = 0; k < devices_num[j]; k++) {
device_num = device_list->platform_node[i]->device_num;
device_list->platform_node[i]->device_node[device_num] = av_mallocz(sizeof(AVOpenCLDeviceNode));
if (!device_list->platform_node[i]->device_node[device_num]) {
ret = AVERROR(ENOMEM);
goto end;
}
device_node = device_list->platform_node[i]->device_node[device_num];
device_node->device_id = device_ids[k];
device_node->device_type = device_type[j];
status = clGetDeviceInfo(device_node->device_id, CL_DEVICE_NAME,
0, NULL, &device_name_size);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_WARNING,
"Could not get size of device name: %s\n", av_opencl_errstr(status));
continue;
}
device_node->device_name = av_malloc(device_name_size * sizeof(char));
if (!device_node->device_name) {
av_log(&opencl_ctx, AV_LOG_WARNING,
"Could not allocate memory for device name: %s\n", av_opencl_errstr(status));
continue;
}
status = clGetDeviceInfo(device_node->device_id, CL_DEVICE_NAME,
device_name_size * sizeof(char),
device_node->device_name, NULL);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_WARNING,
"Could not get device name: %s\n", av_opencl_errstr(status));
continue;
}
device_list->platform_node[i]->device_num++;
}
av_freep(&device_ids);
}
}
}
end:
av_freep(&platform_ids);
av_freep(&devices_num);
av_freep(&device_ids);
if (ret < 0)
free_device_list(device_list);
return ret;
}
int av_opencl_get_device_list(AVOpenCLDeviceList **device_list)
{
int ret = 0;
*device_list = av_mallocz(sizeof(AVOpenCLDeviceList));
if (!(*device_list)) {
av_log(&opencl_ctx, AV_LOG_ERROR, "Could not allocate opencl device list\n");
return AVERROR(ENOMEM);
}
ret = get_device_list(*device_list);
if (ret < 0) {
av_log(&opencl_ctx, AV_LOG_ERROR, "Could not get device list from environment\n");
free_device_list(*device_list);
av_freep(device_list);
return ret;
}
return ret;
}
void av_opencl_free_device_list(AVOpenCLDeviceList **device_list)
{
free_device_list(*device_list);
av_freep(device_list);
}
static inline int init_opencl_mtx(void)
{
#if HAVE_THREADS
if (!atomic_opencl_lock) {
int err;
pthread_mutex_t *tmp = av_malloc(sizeof(pthread_mutex_t));
if (!tmp)
return AVERROR(ENOMEM);
if ((err = pthread_mutex_init(tmp, NULL))) {
av_free(tmp);
return AVERROR(err);
}
if (avpriv_atomic_ptr_cas(&atomic_opencl_lock, NULL, tmp)) {
pthread_mutex_destroy(tmp);
av_free(tmp);
}
}
#endif
return 0;
}
int av_opencl_set_option(const char *key, const char *val)
{
int ret = init_opencl_mtx( );
if (ret < 0)
return ret;
LOCK_OPENCL;
if (!opencl_ctx.opt_init_flag) {
av_opt_set_defaults(&opencl_ctx);
opencl_ctx.opt_init_flag = 1;
}
ret = av_opt_set(&opencl_ctx, key, val, 0);
UNLOCK_OPENCL;
return ret;
}
int av_opencl_get_option(const char *key, uint8_t **out_val)
{
int ret = 0;
LOCK_OPENCL;
ret = av_opt_get(&opencl_ctx, key, 0, out_val);
UNLOCK_OPENCL;
return ret;
}
void av_opencl_free_option(void)
{
/*FIXME: free openclutils context*/
LOCK_OPENCL;
av_opt_free(&opencl_ctx);
UNLOCK_OPENCL;
}
AVOpenCLExternalEnv *av_opencl_alloc_external_env(void)
{
AVOpenCLExternalEnv *ext = av_mallocz(sizeof(AVOpenCLExternalEnv));
if (!ext) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not malloc external opencl environment data space\n");
}
return ext;
}
void av_opencl_free_external_env(AVOpenCLExternalEnv **ext_opencl_env)
{
av_freep(ext_opencl_env);
}
int av_opencl_register_kernel_code(const char *kernel_code)
{
int i, ret = init_opencl_mtx( );
if (ret < 0)
return ret;
LOCK_OPENCL;
if (opencl_ctx.kernel_code_count >= MAX_KERNEL_CODE_NUM) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not register kernel code, maximum number of registered kernel code %d already reached\n",
MAX_KERNEL_CODE_NUM);
ret = AVERROR(EINVAL);
goto end;
}
for (i = 0; i < opencl_ctx.kernel_code_count; i++) {
if (opencl_ctx.kernel_code[i].kernel_string == kernel_code) {
av_log(&opencl_ctx, AV_LOG_WARNING, "Same kernel code has been registered\n");
goto end;
}
}
opencl_ctx.kernel_code[opencl_ctx.kernel_code_count].kernel_string = kernel_code;
opencl_ctx.kernel_code[opencl_ctx.kernel_code_count].is_compiled = 0;
opencl_ctx.kernel_code_count++;
end:
UNLOCK_OPENCL;
return ret;
}
cl_program av_opencl_compile(const char *program_name, const char *build_opts)
{
int i;
cl_int status;
int kernel_code_idx = 0;
const char *kernel_source;
size_t kernel_code_len;
char* ptr = NULL;
cl_program program = NULL;
LOCK_OPENCL;
for (i = 0; i < opencl_ctx.kernel_code_count; i++) {
// identify a program using a unique name within the kernel source
ptr = av_stristr(opencl_ctx.kernel_code[i].kernel_string, program_name);
if (ptr && !opencl_ctx.kernel_code[i].is_compiled) {
kernel_source = opencl_ctx.kernel_code[i].kernel_string;
kernel_code_len = strlen(opencl_ctx.kernel_code[i].kernel_string);
kernel_code_idx = i;
break;
}
}
if (!kernel_source) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Unable to find OpenCL kernel source '%s'\n", program_name);
goto end;
}
/* create a CL program from kernel source */
program = clCreateProgramWithSource(opencl_ctx.context, 1, &kernel_source, &kernel_code_len, &status);
if(status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Unable to create OpenCL program '%s': %s\n", program_name, av_opencl_errstr(status));
program = NULL;
goto end;
}
status = clBuildProgram(program, 1, &(opencl_ctx.device_id), build_opts, NULL, NULL);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Compilation failed with OpenCL program: %s\n", program_name);
program = NULL;
goto end;
}
opencl_ctx.kernel_code[kernel_code_idx].is_compiled = 1;
end:
UNLOCK_OPENCL;
return program;
}
cl_command_queue av_opencl_get_command_queue(void)
{
return opencl_ctx.command_queue;
}
static int init_opencl_env(OpenclContext *opencl_ctx, AVOpenCLExternalEnv *ext_opencl_env)
{
cl_int status;
cl_context_properties cps[3];
int i, ret = 0;
AVOpenCLDeviceNode *device_node = NULL;
if (ext_opencl_env) {
if (opencl_ctx->is_user_created)
return 0;
opencl_ctx->platform_id = ext_opencl_env->platform_id;
opencl_ctx->is_user_created = 1;
opencl_ctx->command_queue = ext_opencl_env->command_queue;
opencl_ctx->context = ext_opencl_env->context;
opencl_ctx->device_id = ext_opencl_env->device_id;
opencl_ctx->device_type = ext_opencl_env->device_type;
} else {
if (!opencl_ctx->is_user_created) {
if (!opencl_ctx->device_list.platform_num) {
ret = get_device_list(&opencl_ctx->device_list);
if (ret < 0) {
return ret;
}
}
if (opencl_ctx->platform_idx >= 0) {
if (opencl_ctx->device_list.platform_num < opencl_ctx->platform_idx + 1) {
av_log(opencl_ctx, AV_LOG_ERROR, "User set platform index not exist\n");
return AVERROR(EINVAL);
}
if (!opencl_ctx->device_list.platform_node[opencl_ctx->platform_idx]->device_num) {
av_log(opencl_ctx, AV_LOG_ERROR, "No devices in user specific platform with index %d\n",
opencl_ctx->platform_idx);
return AVERROR(EINVAL);
}
opencl_ctx->platform_id = opencl_ctx->device_list.platform_node[opencl_ctx->platform_idx]->platform_id;
} else {
/* get a usable platform by default*/
for (i = 0; i < opencl_ctx->device_list.platform_num; i++) {
if (opencl_ctx->device_list.platform_node[i]->device_num) {
opencl_ctx->platform_id = opencl_ctx->device_list.platform_node[i]->platform_id;
opencl_ctx->platform_idx = i;
break;
}
}
}
if (!opencl_ctx->platform_id) {
av_log(opencl_ctx, AV_LOG_ERROR, "Could not get OpenCL platforms\n");
return AVERROR_EXTERNAL;
}
/* get a usable device*/
if (opencl_ctx->device_idx >= 0) {
if (opencl_ctx->device_list.platform_node[opencl_ctx->platform_idx]->device_num < opencl_ctx->device_idx + 1) {
av_log(opencl_ctx, AV_LOG_ERROR,
"Could not get OpenCL device idx %d in the user set platform\n", opencl_ctx->platform_idx);
return AVERROR(EINVAL);
}
} else {
opencl_ctx->device_idx = 0;
}
device_node = opencl_ctx->device_list.platform_node[opencl_ctx->platform_idx]->device_node[opencl_ctx->device_idx];
opencl_ctx->device_id = device_node->device_id;
opencl_ctx->device_type = device_node->device_type;
/*
* Use available platform.
*/
av_log(opencl_ctx, AV_LOG_VERBOSE, "Platform Name: %s, Device Name: %s\n",
opencl_ctx->device_list.platform_node[opencl_ctx->platform_idx]->platform_name,
device_node->device_name);
cps[0] = CL_CONTEXT_PLATFORM;
cps[1] = (cl_context_properties)opencl_ctx->platform_id;
cps[2] = 0;
opencl_ctx->context = clCreateContextFromType(cps, opencl_ctx->device_type,
NULL, NULL, &status);
if (status != CL_SUCCESS) {
av_log(opencl_ctx, AV_LOG_ERROR,
"Could not get OpenCL context from device type: %s\n", av_opencl_errstr(status));
return AVERROR_EXTERNAL;
}
opencl_ctx->command_queue = clCreateCommandQueue(opencl_ctx->context, opencl_ctx->device_id,
0, &status);
if (status != CL_SUCCESS) {
av_log(opencl_ctx, AV_LOG_ERROR,
"Could not create OpenCL command queue: %s\n", av_opencl_errstr(status));
return AVERROR_EXTERNAL;
}
}
}
return ret;
}
int av_opencl_init(AVOpenCLExternalEnv *ext_opencl_env)
{
int ret = init_opencl_mtx( );
if (ret < 0)
return ret;
LOCK_OPENCL;
if (!opencl_ctx.init_count) {
if (!opencl_ctx.opt_init_flag) {
av_opt_set_defaults(&opencl_ctx);
opencl_ctx.opt_init_flag = 1;
}
ret = init_opencl_env(&opencl_ctx, ext_opencl_env);
if (ret < 0)
goto end;
if (opencl_ctx.kernel_code_count <= 0) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"No kernel code is registered, compile kernel file failed\n");
ret = AVERROR(EINVAL);
goto end;
}
}
opencl_ctx.init_count++;
end:
UNLOCK_OPENCL;
return ret;
}
void av_opencl_uninit(void)
{
int i;
cl_int status;
LOCK_OPENCL;
opencl_ctx.init_count--;
if (opencl_ctx.is_user_created)
goto end;
if (opencl_ctx.init_count > 0)
goto end;
if (opencl_ctx.command_queue) {
status = clReleaseCommandQueue(opencl_ctx.command_queue);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not release OpenCL command queue: %s\n", av_opencl_errstr(status));
}
opencl_ctx.command_queue = NULL;
}
if (opencl_ctx.context) {
status = clReleaseContext(opencl_ctx.context);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not release OpenCL context: %s\n", av_opencl_errstr(status));
}
opencl_ctx.context = NULL;
}
for (i = 0; i < opencl_ctx.kernel_code_count; i++) {
opencl_ctx.kernel_code[i].is_compiled = 0;
}
free_device_list(&opencl_ctx.device_list);
end:
if (opencl_ctx.init_count <= 0)
av_opt_free(&opencl_ctx); //FIXME: free openclutils context
UNLOCK_OPENCL;
}
int av_opencl_buffer_create(cl_mem *cl_buf, size_t cl_buf_size, int flags, void *host_ptr)
{
cl_int status;
*cl_buf = clCreateBuffer(opencl_ctx.context, flags, cl_buf_size, host_ptr, &status);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR, "Could not create OpenCL buffer: %s\n", av_opencl_errstr(status));
return AVERROR_EXTERNAL;
}
return 0;
}
void av_opencl_buffer_release(cl_mem *cl_buf)
{
cl_int status = 0;
if (!cl_buf)
return;
status = clReleaseMemObject(*cl_buf);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not release OpenCL buffer: %s\n", av_opencl_errstr(status));
}
memset(cl_buf, 0, sizeof(*cl_buf));
}
int av_opencl_buffer_write(cl_mem dst_cl_buf, uint8_t *src_buf, size_t buf_size)
{
cl_int status;
void *mapped = clEnqueueMapBuffer(opencl_ctx.command_queue, dst_cl_buf,
CL_TRUE, CL_MAP_WRITE, 0, sizeof(uint8_t) * buf_size,
0, NULL, NULL, &status);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not map OpenCL buffer: %s\n", av_opencl_errstr(status));
return AVERROR_EXTERNAL;
}
memcpy(mapped, src_buf, buf_size);
status = clEnqueueUnmapMemObject(opencl_ctx.command_queue, dst_cl_buf, mapped, 0, NULL, NULL);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not unmap OpenCL buffer: %s\n", av_opencl_errstr(status));
return AVERROR_EXTERNAL;
}
return 0;
}
int av_opencl_buffer_read(uint8_t *dst_buf, cl_mem src_cl_buf, size_t buf_size)
{
cl_int status;
void *mapped = clEnqueueMapBuffer(opencl_ctx.command_queue, src_cl_buf,
CL_TRUE, CL_MAP_READ, 0, buf_size,
0, NULL, NULL, &status);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not map OpenCL buffer: %s\n", av_opencl_errstr(status));
return AVERROR_EXTERNAL;
}
memcpy(dst_buf, mapped, buf_size);
status = clEnqueueUnmapMemObject(opencl_ctx.command_queue, src_cl_buf, mapped, 0, NULL, NULL);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not unmap OpenCL buffer: %s\n", av_opencl_errstr(status));
return AVERROR_EXTERNAL;
}
return 0;
}
int av_opencl_buffer_write_image(cl_mem dst_cl_buf, size_t cl_buffer_size, int dst_cl_offset,
uint8_t **src_data, int *plane_size, int plane_num)
{
int i, buffer_size = 0;
uint8_t *temp;
cl_int status;
void *mapped;
if ((unsigned int)plane_num > 8) {
return AVERROR(EINVAL);
}
for (i = 0;i < plane_num;i++) {
buffer_size += plane_size[i];
}
if (buffer_size > cl_buffer_size) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Cannot write image to OpenCL buffer: buffer too small\n");
return AVERROR(EINVAL);
}
mapped = clEnqueueMapBuffer(opencl_ctx.command_queue, dst_cl_buf,
CL_TRUE, CL_MAP_WRITE, 0, buffer_size + dst_cl_offset,
0, NULL, NULL, &status);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not map OpenCL buffer: %s\n", av_opencl_errstr(status));
return AVERROR_EXTERNAL;
}
temp = mapped;
temp += dst_cl_offset;
for (i = 0; i < plane_num; i++) {
memcpy(temp, src_data[i], plane_size[i]);
temp += plane_size[i];
}
status = clEnqueueUnmapMemObject(opencl_ctx.command_queue, dst_cl_buf, mapped, 0, NULL, NULL);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not unmap OpenCL buffer: %s\n", av_opencl_errstr(status));
return AVERROR_EXTERNAL;
}
return 0;
}
int av_opencl_buffer_read_image(uint8_t **dst_data, int *plane_size, int plane_num,
cl_mem src_cl_buf, size_t cl_buffer_size)
{
int i,buffer_size = 0,ret = 0;
uint8_t *temp;
void *mapped;
cl_int status;
if ((unsigned int)plane_num > 8) {
return AVERROR(EINVAL);
}
for (i = 0; i < plane_num; i++) {
buffer_size += plane_size[i];
}
if (buffer_size > cl_buffer_size) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Cannot write image to CPU buffer: OpenCL buffer too small\n");
return AVERROR(EINVAL);
}
mapped = clEnqueueMapBuffer(opencl_ctx.command_queue, src_cl_buf,
CL_TRUE, CL_MAP_READ, 0, buffer_size,
0, NULL, NULL, &status);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not map OpenCL buffer: %s\n", av_opencl_errstr(status));
return AVERROR_EXTERNAL;
}
temp = mapped;
if (ret >= 0) {
for (i = 0; i < plane_num; i++) {
memcpy(dst_data[i], temp, plane_size[i]);
temp += plane_size[i];
}
}
status = clEnqueueUnmapMemObject(opencl_ctx.command_queue, src_cl_buf, mapped, 0, NULL, NULL);
if (status != CL_SUCCESS) {
av_log(&opencl_ctx, AV_LOG_ERROR,
"Could not unmap OpenCL buffer: %s\n", av_opencl_errstr(status));
return AVERROR_EXTERNAL;
}
return 0;
}
int64_t av_opencl_benchmark(AVOpenCLDeviceNode *device_node, cl_platform_id platform,
int64_t (*benchmark)(AVOpenCLExternalEnv *ext_opencl_env))
{
int64_t ret = 0;
cl_int status;
cl_context_properties cps[3];
AVOpenCLExternalEnv *ext_opencl_env = NULL;
ext_opencl_env = av_opencl_alloc_external_env();
ext_opencl_env->device_id = device_node->device_id;
ext_opencl_env->device_type = device_node->device_type;
av_log(&opencl_ctx, AV_LOG_VERBOSE, "Performing test on OpenCL device %s\n",
device_node->device_name);
cps[0] = CL_CONTEXT_PLATFORM;
cps[1] = (cl_context_properties)platform;
cps[2] = 0;
ext_opencl_env->context = clCreateContextFromType(cps, ext_opencl_env->device_type,
NULL, NULL, &status);
if (status != CL_SUCCESS || !ext_opencl_env->context) {
ret = AVERROR_EXTERNAL;
goto end;
}
ext_opencl_env->command_queue = clCreateCommandQueue(ext_opencl_env->context,
ext_opencl_env->device_id, 0, &status);
if (status != CL_SUCCESS || !ext_opencl_env->command_queue) {
ret = AVERROR_EXTERNAL;
goto end;
}
ret = benchmark(ext_opencl_env);
if (ret < 0)
av_log(&opencl_ctx, AV_LOG_ERROR, "Benchmark failed with OpenCL device %s\n",
device_node->device_name);
end:
if (ext_opencl_env->command_queue)
clReleaseCommandQueue(ext_opencl_env->command_queue);
if (ext_opencl_env->context)
clReleaseContext(ext_opencl_env->context);
av_opencl_free_external_env(&ext_opencl_env);
return ret;
}
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