This source file includes following definitions.
- transpose_opencl_init
- transpose_opencl_config_output
- get_video_buffer
- transpose_opencl_filter_frame
- transpose_opencl_uninit
#include <float.h>
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"
#include "opencl.h"
#include "opencl_source.h"
#include "video.h"
#include "transpose.h"
typedef struct TransposeOpenCLContext {
OpenCLFilterContext ocf;
int initialised;
int passthrough;
int dir;
cl_kernel kernel;
cl_command_queue command_queue;
} TransposeOpenCLContext;
static int transpose_opencl_init(AVFilterContext *avctx)
{
TransposeOpenCLContext *ctx = avctx->priv;
cl_int cle;
int err;
err = ff_opencl_filter_load_program(avctx, &ff_opencl_source_transpose, 1);
if (err < 0)
goto fail;
ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
ctx->ocf.hwctx->device_id,
0, &cle);
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL "
"command queue %d.\n", cle);
ctx->kernel = clCreateKernel(ctx->ocf.program, "transpose", &cle);
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create kernel %d.\n", cle);
ctx->initialised = 1;
return 0;
fail:
if (ctx->command_queue)
clReleaseCommandQueue(ctx->command_queue);
if (ctx->kernel)
clReleaseKernel(ctx->kernel);
return err;
}
static int transpose_opencl_config_output(AVFilterLink *outlink)
{
AVFilterContext *avctx = outlink->src;
TransposeOpenCLContext *s = avctx->priv;
AVFilterLink *inlink = avctx->inputs[0];
const AVPixFmtDescriptor *desc_in = av_pix_fmt_desc_get(inlink->format);
int ret;
if ((inlink->w >= inlink->h &&
s->passthrough == TRANSPOSE_PT_TYPE_LANDSCAPE) ||
(inlink->w <= inlink->h &&
s->passthrough == TRANSPOSE_PT_TYPE_PORTRAIT)) {
if (inlink->hw_frames_ctx) {
outlink->hw_frames_ctx = av_buffer_ref(inlink->hw_frames_ctx);
if (!outlink->hw_frames_ctx)
return AVERROR(ENOMEM);
}
av_log(avctx, AV_LOG_VERBOSE,
"w:%d h:%d -> w:%d h:%d (passthrough mode)\n",
inlink->w, inlink->h, inlink->w, inlink->h);
return 0;
} else {
s->passthrough = TRANSPOSE_PT_TYPE_NONE;
}
if (desc_in->log2_chroma_w != desc_in->log2_chroma_h) {
av_log(avctx, AV_LOG_ERROR, "Input format %s not supported.\n",
desc_in->name);
return AVERROR(EINVAL);
}
s->ocf.output_width = inlink->h;
s->ocf.output_height = inlink->w;
ret = ff_opencl_filter_config_output(outlink);
if (ret < 0)
return ret;
if (inlink->sample_aspect_ratio.num)
outlink->sample_aspect_ratio = av_div_q((AVRational) { 1, 1 },
inlink->sample_aspect_ratio);
else
outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
av_log(avctx, AV_LOG_VERBOSE,
"w:%d h:%d dir:%d -> w:%d h:%d rotation:%s vflip:%d\n",
inlink->w, inlink->h, s->dir, outlink->w, outlink->h,
s->dir == 1 || s->dir == 3 ? "clockwise" : "counterclockwise",
s->dir == 0 || s->dir == 3);
return 0;
}
static AVFrame *get_video_buffer(AVFilterLink *inlink, int w, int h)
{
TransposeOpenCLContext *s = inlink->dst->priv;
return s->passthrough ?
ff_null_get_video_buffer (inlink, w, h) :
ff_default_get_video_buffer(inlink, w, h);
}
static int transpose_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
{
AVFilterContext *avctx = inlink->dst;
AVFilterLink *outlink = avctx->outputs[0];
TransposeOpenCLContext *ctx = avctx->priv;
AVFrame *output = NULL;
size_t global_work[2];
cl_mem src, dst;
cl_int cle;
int err, p;
av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
av_get_pix_fmt_name(input->format),
input->width, input->height, input->pts);
if (!input->hw_frames_ctx)
return AVERROR(EINVAL);
if (ctx->passthrough)
return ff_filter_frame(outlink, input);
output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!output) {
err = AVERROR(ENOMEM);
goto fail;
}
err = av_frame_copy_props(output, input);
if (err < 0)
goto fail;
if (input->sample_aspect_ratio.num == 0) {
output->sample_aspect_ratio = input->sample_aspect_ratio;
} else {
output->sample_aspect_ratio.num = input->sample_aspect_ratio.den;
output->sample_aspect_ratio.den = input->sample_aspect_ratio.num;
}
if (!ctx->initialised) {
err = transpose_opencl_init(avctx);
if (err < 0)
goto fail;
}
for (p = 0; p < FF_ARRAY_ELEMS(output->data); p++) {
src = (cl_mem) input->data[p];
dst = (cl_mem) output->data[p];
if (!dst)
break;
CL_SET_KERNEL_ARG(ctx->kernel, 0, cl_mem, &dst);
CL_SET_KERNEL_ARG(ctx->kernel, 1, cl_mem, &src);
CL_SET_KERNEL_ARG(ctx->kernel, 2, cl_int, &ctx->dir);
err = ff_opencl_filter_work_size_from_image(avctx, global_work, output,
p, 16);
cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel, 2, NULL,
global_work, NULL,
0, NULL, NULL);
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue kernel: %d.\n", cle);
}
cle = clFinish(ctx->command_queue);
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish command queue: %d.\n", cle);
av_frame_free(&input);
av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
av_get_pix_fmt_name(output->format),
output->width, output->height, output->pts);
return ff_filter_frame(outlink, output);
fail:
clFinish(ctx->command_queue);
av_frame_free(&input);
av_frame_free(&output);
return err;
}
static av_cold void transpose_opencl_uninit(AVFilterContext *avctx)
{
TransposeOpenCLContext *ctx = avctx->priv;
cl_int cle;
if (ctx->kernel) {
cle = clReleaseKernel(ctx->kernel);
if (cle != CL_SUCCESS)
av_log(avctx, AV_LOG_ERROR, "Failed to release "
"kernel: %d.\n", cle);
}
if (ctx->command_queue) {
cle = clReleaseCommandQueue(ctx->command_queue);
if (cle != CL_SUCCESS)
av_log(avctx, AV_LOG_ERROR, "Failed to release "
"command queue: %d.\n", cle);
}
ff_opencl_filter_uninit(avctx);
}
#define OFFSET(x) offsetof(TransposeOpenCLContext, x)
#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
static const AVOption transpose_opencl_options[] = {
{ "dir", "set transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, { .i64 = TRANSPOSE_CCLOCK_FLIP }, 0, 3, FLAGS, "dir" },
{ "cclock_flip", "rotate counter-clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK_FLIP }, .flags=FLAGS, .unit = "dir" },
{ "clock", "rotate clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK }, .flags=FLAGS, .unit = "dir" },
{ "cclock", "rotate counter-clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK }, .flags=FLAGS, .unit = "dir" },
{ "clock_flip", "rotate clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK_FLIP }, .flags=FLAGS, .unit = "dir" },
{ "passthrough", "do not apply transposition if the input matches the specified geometry",
OFFSET(passthrough), AV_OPT_TYPE_INT, {.i64=TRANSPOSE_PT_TYPE_NONE}, 0, INT_MAX, FLAGS, "passthrough" },
{ "none", "always apply transposition", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_NONE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
{ "portrait", "preserve portrait geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
{ "landscape", "preserve landscape geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
{ NULL }
};
AVFILTER_DEFINE_CLASS(transpose_opencl);
static const AVFilterPad transpose_opencl_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.get_video_buffer = get_video_buffer,
.filter_frame = &transpose_opencl_filter_frame,
.config_props = &ff_opencl_filter_config_input,
},
{ NULL }
};
static const AVFilterPad transpose_opencl_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = &transpose_opencl_config_output,
},
{ NULL }
};
AVFilter ff_vf_transpose_opencl = {
.name = "transpose_opencl",
.description = NULL_IF_CONFIG_SMALL("Transpose input video"),
.priv_size = sizeof(TransposeOpenCLContext),
.priv_class = &transpose_opencl_class,
.init = &ff_opencl_filter_init,
.uninit = &transpose_opencl_uninit,
.query_formats = &ff_opencl_filter_query_formats,
.inputs = transpose_opencl_inputs,
.outputs = transpose_opencl_outputs,
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};