/*
* 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 <nppi.h>
#include <stdio.h>
#include <string.h>
#include "libavutil/common.h"
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_cuda_internal.h"
#include "libavutil/cuda_check.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
#define CHECK_CU(x) FF_CUDA_CHECK_DL(ctx, device_hwctx->internal->cuda_dl, x)
static const enum AVPixelFormat supported_formats[] = {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUV444P
};
enum TransposeStage {
STAGE_ROTATE,
STAGE_TRANSPOSE,
STAGE_NB
};
enum Transpose {
NPP_TRANSPOSE_CCLOCK_FLIP = 0,
NPP_TRANSPOSE_CLOCK = 1,
NPP_TRANSPOSE_CCLOCK = 2,
NPP_TRANSPOSE_CLOCK_FLIP = 3
};
enum Passthrough {
NPP_TRANSPOSE_PT_TYPE_NONE = 0,
NPP_TRANSPOSE_PT_TYPE_LANDSCAPE,
NPP_TRANSPOSE_PT_TYPE_PORTRAIT
};
typedef struct NPPTransposeStageContext {
int stage_needed;
enum AVPixelFormat in_fmt;
enum AVPixelFormat out_fmt;
struct {
int width;
int height;
} planes_in[3], planes_out[3];
AVBufferRef *frames_ctx;
AVFrame *frame;
} NPPTransposeStageContext;
typedef struct NPPTransposeContext {
const AVClass *class;
NPPTransposeStageContext stages[STAGE_NB];
AVFrame *tmp_frame;
int passthrough; ///< PassthroughType, landscape passthrough mode enabled
int dir; ///< TransposeDir
} NPPTransposeContext;
static int npptranspose_init(AVFilterContext *ctx)
{
NPPTransposeContext *s = ctx->priv;
int i;
for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
s->stages[i].frame = av_frame_alloc();
if (!s->stages[i].frame)
return AVERROR(ENOMEM);
}
s->tmp_frame = av_frame_alloc();
if (!s->tmp_frame)
return AVERROR(ENOMEM);
return 0;
}
static void npptranspose_uninit(AVFilterContext *ctx)
{
NPPTransposeContext *s = ctx->priv;
int i;
for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
av_frame_free(&s->stages[i].frame);
av_buffer_unref(&s->stages[i].frames_ctx);
}
av_frame_free(&s->tmp_frame);
}
static int init_stage(NPPTransposeStageContext *stage, AVBufferRef *device_ctx)
{
AVBufferRef *out_ref = NULL;
AVHWFramesContext *out_ctx;
int in_sw, in_sh, out_sw, out_sh;
int ret, i;
av_pix_fmt_get_chroma_sub_sample(stage->in_fmt, &in_sw, &in_sh);
av_pix_fmt_get_chroma_sub_sample(stage->out_fmt, &out_sw, &out_sh);
if (!stage->planes_out[0].width) {
stage->planes_out[0].width = stage->planes_in[0].width;
stage->planes_out[0].height = stage->planes_in[0].height;
}
for (i = 1; i < FF_ARRAY_ELEMS(stage->planes_in); i++) {
stage->planes_in[i].width = stage->planes_in[0].width >> in_sw;
stage->planes_in[i].height = stage->planes_in[0].height >> in_sh;
stage->planes_out[i].width = stage->planes_out[0].width >> out_sw;
stage->planes_out[i].height = stage->planes_out[0].height >> out_sh;
}
out_ref = av_hwframe_ctx_alloc(device_ctx);
if (!out_ref)
return AVERROR(ENOMEM);
out_ctx = (AVHWFramesContext*)out_ref->data;
out_ctx->format = AV_PIX_FMT_CUDA;
out_ctx->sw_format = stage->out_fmt;
out_ctx->width = FFALIGN(stage->planes_out[0].width, 32);
out_ctx->height = FFALIGN(stage->planes_out[0].height, 32);
ret = av_hwframe_ctx_init(out_ref);
if (ret < 0)
goto fail;
av_frame_unref(stage->frame);
ret = av_hwframe_get_buffer(out_ref, stage->frame, 0);
if (ret < 0)
goto fail;
stage->frame->width = stage->planes_out[0].width;
stage->frame->height = stage->planes_out[0].height;
av_buffer_unref(&stage->frames_ctx);
stage->frames_ctx = out_ref;
return 0;
fail:
av_buffer_unref(&out_ref);
return ret;
}
static int format_is_supported(enum AVPixelFormat fmt)
{
int i;
for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++)
if (supported_formats[i] == fmt)
return 1;
return 0;
}
static int init_processing_chain(AVFilterContext *ctx, int in_width, int in_height,
int out_width, int out_height)
{
NPPTransposeContext *s = ctx->priv;
AVHWFramesContext *in_frames_ctx;
enum AVPixelFormat format;
int i, ret, last_stage = -1;
int rot_width = out_width, rot_height = out_height;
/* check that we have a hw context */
if (!ctx->inputs[0]->hw_frames_ctx) {
av_log(ctx, AV_LOG_ERROR, "No hw context provided on input\n");
return AVERROR(EINVAL);
}
in_frames_ctx = (AVHWFramesContext*)ctx->inputs[0]->hw_frames_ctx->data;
format = in_frames_ctx->sw_format;
if (!format_is_supported(format)) {
av_log(ctx, AV_LOG_ERROR, "Unsupported input format: %s\n",
av_get_pix_fmt_name(format));
return AVERROR(ENOSYS);
}
if (s->dir != NPP_TRANSPOSE_CCLOCK_FLIP) {
s->stages[STAGE_ROTATE].stage_needed = 1;
}
if (s->dir == NPP_TRANSPOSE_CCLOCK_FLIP || s->dir == NPP_TRANSPOSE_CLOCK_FLIP) {
s->stages[STAGE_TRANSPOSE].stage_needed = 1;
/* Rotating by 180° in case of clock_flip, or not at all for cclock_flip, so width/height unchanged by rotation */
rot_width = in_width;
rot_height = in_height;
}
s->stages[STAGE_ROTATE].in_fmt = format;
s->stages[STAGE_ROTATE].out_fmt = format;
s->stages[STAGE_ROTATE].planes_in[0].width = in_width;
s->stages[STAGE_ROTATE].planes_in[0].height = in_height;
s->stages[STAGE_ROTATE].planes_out[0].width = rot_width;
s->stages[STAGE_ROTATE].planes_out[0].height = rot_height;
s->stages[STAGE_TRANSPOSE].in_fmt = format;
s->stages[STAGE_TRANSPOSE].out_fmt = format;
s->stages[STAGE_TRANSPOSE].planes_in[0].width = rot_width;
s->stages[STAGE_TRANSPOSE].planes_in[0].height = rot_height;
s->stages[STAGE_TRANSPOSE].planes_out[0].width = out_width;
s->stages[STAGE_TRANSPOSE].planes_out[0].height = out_height;
/* init the hardware contexts */
for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
if (!s->stages[i].stage_needed)
continue;
ret = init_stage(&s->stages[i], in_frames_ctx->device_ref);
if (ret < 0)
return ret;
last_stage = i;
}
if (last_stage >= 0) {
ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(s->stages[last_stage].frames_ctx);
} else {
ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(ctx->inputs[0]->hw_frames_ctx);
s->passthrough = 1;
}
if (!ctx->outputs[0]->hw_frames_ctx)
return AVERROR(ENOMEM);
return 0;
}
static int npptranspose_config_props(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
AVFilterLink *inlink = ctx->inputs[0];
NPPTransposeContext *s = ctx->priv;
int ret;
if ((inlink->w >= inlink->h && s->passthrough == NPP_TRANSPOSE_PT_TYPE_LANDSCAPE) ||
(inlink->w <= inlink->h && s->passthrough == NPP_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(ctx, 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 = NPP_TRANSPOSE_PT_TYPE_NONE;
}
outlink->w = inlink->h;
outlink->h = inlink->w;
outlink->sample_aspect_ratio = (AVRational){inlink->sample_aspect_ratio.den, inlink->sample_aspect_ratio.num};
ret = init_processing_chain(ctx, inlink->w, inlink->h, outlink->w, outlink->h);
if (ret < 0)
return ret;
av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d -transpose-> w:%d h:%d\n",
inlink->w, inlink->h, outlink->w, outlink->h);
return 0;
}
static int npptranspose_rotate(AVFilterContext *ctx, NPPTransposeStageContext *stage,
AVFrame *out, AVFrame *in)
{
NPPTransposeContext *s = ctx->priv;
NppStatus err;
int i;
for (i = 0; i < FF_ARRAY_ELEMS(stage->planes_in) && i < FF_ARRAY_ELEMS(in->data) && in->data[i]; i++) {
int iw = stage->planes_in[i].width;
int ih = stage->planes_in[i].height;
int ow = stage->planes_out[i].width;
int oh = stage->planes_out[i].height;
// nppRotate uses 0,0 as the rotation point
// need to shift the image accordingly after rotation
// need to substract 1 to get the correct coordinates
double angle = s->dir == NPP_TRANSPOSE_CLOCK ? -90.0 : s->dir == NPP_TRANSPOSE_CCLOCK ? 90.0 : 180.0;
int shiftw = (s->dir == NPP_TRANSPOSE_CLOCK || s->dir == NPP_TRANSPOSE_CLOCK_FLIP) ? ow - 1 : 0;
int shifth = (s->dir == NPP_TRANSPOSE_CCLOCK || s->dir == NPP_TRANSPOSE_CLOCK_FLIP) ? oh - 1 : 0;
err = nppiRotate_8u_C1R(in->data[i], (NppiSize){ iw, ih },
in->linesize[i], (NppiRect){ 0, 0, iw, ih },
out->data[i], out->linesize[i],
(NppiRect){ 0, 0, ow, oh },
angle, shiftw, shifth, NPPI_INTER_NN);
if (err != NPP_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "NPP rotate error: %d\n", err);
return AVERROR_UNKNOWN;
}
}
return 0;
}
static int npptranspose_transpose(AVFilterContext *ctx, NPPTransposeStageContext *stage,
AVFrame *out, AVFrame *in)
{
NppStatus err;
int i;
for (i = 0; i < FF_ARRAY_ELEMS(stage->planes_in) && i < FF_ARRAY_ELEMS(in->data) && in->data[i]; i++) {
int iw = stage->planes_in[i].width;
int ih = stage->planes_in[i].height;
err = nppiTranspose_8u_C1R(in->data[i], in->linesize[i],
out->data[i], out->linesize[i],
(NppiSize){ iw, ih });
if (err != NPP_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "NPP transpose error: %d\n", err);
return AVERROR_UNKNOWN;
}
}
return 0;
}
static int (*const npptranspose_process[])(AVFilterContext *ctx, NPPTransposeStageContext *stage,
AVFrame *out, AVFrame *in) = {
[STAGE_ROTATE] = npptranspose_rotate,
[STAGE_TRANSPOSE] = npptranspose_transpose
};
static int npptranspose_filter(AVFilterContext *ctx, AVFrame *out, AVFrame *in)
{
NPPTransposeContext *s = ctx->priv;
AVFrame *src = in;
int i, ret, last_stage = -1;
for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
if (!s->stages[i].stage_needed)
continue;
ret = npptranspose_process[i](ctx, &s->stages[i], s->stages[i].frame, src);
if (ret < 0)
return ret;
src = s->stages[i].frame;
last_stage = i;
}
if (last_stage < 0)
return AVERROR_BUG;
ret = av_hwframe_get_buffer(src->hw_frames_ctx, s->tmp_frame, 0);
if (ret < 0)
return ret;
av_frame_move_ref(out, src);
av_frame_move_ref(src, s->tmp_frame);
ret = av_frame_copy_props(out, in);
if (ret < 0)
return ret;
return 0;
}
static int npptranspose_filter_frame(AVFilterLink *link, AVFrame *in)
{
AVFilterContext *ctx = link->dst;
NPPTransposeContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
AVHWFramesContext *frames_ctx = (AVHWFramesContext*)outlink->hw_frames_ctx->data;
AVCUDADeviceContext *device_hwctx = frames_ctx->device_ctx->hwctx;
AVFrame *out = NULL;
CUcontext dummy;
int ret = 0;
if (s->passthrough)
return ff_filter_frame(outlink, in);
out = av_frame_alloc();
if (!out) {
ret = AVERROR(ENOMEM);
goto fail;
}
ret = CHECK_CU(device_hwctx->internal->cuda_dl->cuCtxPushCurrent(device_hwctx->cuda_ctx));
if (ret < 0)
goto fail;
ret = npptranspose_filter(ctx, out, in);
CHECK_CU(device_hwctx->internal->cuda_dl->cuCtxPopCurrent(&dummy));
if (ret < 0)
goto fail;
av_frame_free(&in);
return ff_filter_frame(outlink, out);
fail:
av_frame_free(&in);
av_frame_free(&out);
return ret;
}
#define OFFSET(x) offsetof(NPPTransposeContext, x)
#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM)
static const AVOption options[] = {
{ "dir", "set transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, { .i64 = NPP_TRANSPOSE_CCLOCK_FLIP }, 0, 3, FLAGS, "dir" },
{ "cclock_flip", "rotate counter-clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = NPP_TRANSPOSE_CCLOCK_FLIP }, 0, 0, FLAGS, "dir" },
{ "clock", "rotate clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = NPP_TRANSPOSE_CLOCK }, 0, 0, FLAGS, "dir" },
{ "cclock", "rotate counter-clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = NPP_TRANSPOSE_CCLOCK }, 0, 0, FLAGS, "dir" },
{ "clock_flip", "rotate clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = NPP_TRANSPOSE_CLOCK_FLIP }, 0, 0, FLAGS, "dir" },
{ "passthrough", "do not apply transposition if the input matches the specified geometry", OFFSET(passthrough), AV_OPT_TYPE_INT, { .i64 = NPP_TRANSPOSE_PT_TYPE_NONE }, 0, 2, FLAGS, "passthrough" },
{ "none", "always apply transposition", 0, AV_OPT_TYPE_CONST, { .i64 = NPP_TRANSPOSE_PT_TYPE_NONE }, 0, 0, FLAGS, "passthrough" },
{ "landscape", "preserve landscape geometry", 0, AV_OPT_TYPE_CONST, { .i64 = NPP_TRANSPOSE_PT_TYPE_LANDSCAPE }, 0, 0, FLAGS, "passthrough" },
{ "portrait", "preserve portrait geometry", 0, AV_OPT_TYPE_CONST, { .i64 = NPP_TRANSPOSE_PT_TYPE_PORTRAIT }, 0, 0, FLAGS, "passthrough" },
{ NULL },
};
static const AVClass npptranspose_class = {
.class_name = "npptranspose",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
static const AVFilterPad npptranspose_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = npptranspose_filter_frame,
},
};
static const AVFilterPad npptranspose_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = npptranspose_config_props,
},
};
const AVFilter ff_vf_transpose_npp = {
.name = "transpose_npp",
.description = NULL_IF_CONFIG_SMALL("NVIDIA Performance Primitives video transpose"),
.init = npptranspose_init,
.uninit = npptranspose_uninit,
.priv_size = sizeof(NPPTransposeContext),
.priv_class = &npptranspose_class,
FILTER_INPUTS(npptranspose_inputs),
FILTER_OUTPUTS(npptranspose_outputs),
FILTER_SINGLE_PIXFMT(AV_PIX_FMT_CUDA),
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};