mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-12 19:18:44 +02:00
c16fe1432d
Copied and modified from hwcontext_qsv.c.
413 lines
12 KiB
C
413 lines
12 KiB
C
/*
|
|
* 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 "buffer.h"
|
|
#include "common.h"
|
|
#include "hwcontext.h"
|
|
#include "hwcontext_internal.h"
|
|
#include "hwcontext_cuda_internal.h"
|
|
#include "mem.h"
|
|
#include "pixdesc.h"
|
|
#include "pixfmt.h"
|
|
|
|
#define CUDA_FRAME_ALIGNMENT 256
|
|
|
|
typedef struct CUDAFramesContext {
|
|
int shift_width, shift_height;
|
|
} CUDAFramesContext;
|
|
|
|
static const enum AVPixelFormat supported_formats[] = {
|
|
AV_PIX_FMT_NV12,
|
|
AV_PIX_FMT_YUV420P,
|
|
AV_PIX_FMT_YUV444P,
|
|
AV_PIX_FMT_P010,
|
|
AV_PIX_FMT_P016,
|
|
};
|
|
|
|
static int cuda_frames_get_constraints(AVHWDeviceContext *ctx,
|
|
const void *hwconfig,
|
|
AVHWFramesConstraints *constraints)
|
|
{
|
|
int i;
|
|
|
|
constraints->valid_sw_formats = av_malloc_array(FF_ARRAY_ELEMS(supported_formats) + 1,
|
|
sizeof(*constraints->valid_sw_formats));
|
|
if (!constraints->valid_sw_formats)
|
|
return AVERROR(ENOMEM);
|
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++)
|
|
constraints->valid_sw_formats[i] = supported_formats[i];
|
|
constraints->valid_sw_formats[FF_ARRAY_ELEMS(supported_formats)] = AV_PIX_FMT_NONE;
|
|
|
|
constraints->valid_hw_formats = av_malloc_array(2, sizeof(*constraints->valid_hw_formats));
|
|
if (!constraints->valid_hw_formats)
|
|
return AVERROR(ENOMEM);
|
|
|
|
constraints->valid_hw_formats[0] = AV_PIX_FMT_CUDA;
|
|
constraints->valid_hw_formats[1] = AV_PIX_FMT_NONE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void cuda_buffer_free(void *opaque, uint8_t *data)
|
|
{
|
|
AVHWFramesContext *ctx = opaque;
|
|
AVCUDADeviceContext *hwctx = ctx->device_ctx->hwctx;
|
|
CudaFunctions *cu = hwctx->internal->cuda_dl;
|
|
|
|
CUcontext dummy;
|
|
|
|
cu->cuCtxPushCurrent(hwctx->cuda_ctx);
|
|
|
|
cu->cuMemFree((CUdeviceptr)data);
|
|
|
|
cu->cuCtxPopCurrent(&dummy);
|
|
}
|
|
|
|
static AVBufferRef *cuda_pool_alloc(void *opaque, int size)
|
|
{
|
|
AVHWFramesContext *ctx = opaque;
|
|
AVCUDADeviceContext *hwctx = ctx->device_ctx->hwctx;
|
|
CudaFunctions *cu = hwctx->internal->cuda_dl;
|
|
|
|
AVBufferRef *ret = NULL;
|
|
CUcontext dummy = NULL;
|
|
CUdeviceptr data;
|
|
CUresult err;
|
|
|
|
err = cu->cuCtxPushCurrent(hwctx->cuda_ctx);
|
|
if (err != CUDA_SUCCESS) {
|
|
av_log(ctx, AV_LOG_ERROR, "Error setting current CUDA context\n");
|
|
return NULL;
|
|
}
|
|
|
|
err = cu->cuMemAlloc(&data, size);
|
|
if (err != CUDA_SUCCESS)
|
|
goto fail;
|
|
|
|
ret = av_buffer_create((uint8_t*)data, size, cuda_buffer_free, ctx, 0);
|
|
if (!ret) {
|
|
cu->cuMemFree(data);
|
|
goto fail;
|
|
}
|
|
|
|
fail:
|
|
cu->cuCtxPopCurrent(&dummy);
|
|
return ret;
|
|
}
|
|
|
|
static int cuda_frames_init(AVHWFramesContext *ctx)
|
|
{
|
|
CUDAFramesContext *priv = ctx->internal->priv;
|
|
int aligned_width = FFALIGN(ctx->width, CUDA_FRAME_ALIGNMENT);
|
|
int i;
|
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++) {
|
|
if (ctx->sw_format == supported_formats[i])
|
|
break;
|
|
}
|
|
if (i == FF_ARRAY_ELEMS(supported_formats)) {
|
|
av_log(ctx, AV_LOG_ERROR, "Pixel format '%s' is not supported\n",
|
|
av_get_pix_fmt_name(ctx->sw_format));
|
|
return AVERROR(ENOSYS);
|
|
}
|
|
|
|
av_pix_fmt_get_chroma_sub_sample(ctx->sw_format, &priv->shift_width, &priv->shift_height);
|
|
|
|
if (!ctx->pool) {
|
|
int size;
|
|
|
|
switch (ctx->sw_format) {
|
|
case AV_PIX_FMT_NV12:
|
|
case AV_PIX_FMT_YUV420P:
|
|
size = aligned_width * ctx->height * 3 / 2;
|
|
break;
|
|
case AV_PIX_FMT_YUV444P:
|
|
case AV_PIX_FMT_P010:
|
|
case AV_PIX_FMT_P016:
|
|
size = aligned_width * ctx->height * 3;
|
|
break;
|
|
default:
|
|
av_log(ctx, AV_LOG_ERROR, "BUG: Pixel format missing from size calculation.");
|
|
return AVERROR_BUG;
|
|
}
|
|
|
|
ctx->internal->pool_internal = av_buffer_pool_init2(size, ctx, cuda_pool_alloc, NULL);
|
|
if (!ctx->internal->pool_internal)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cuda_get_buffer(AVHWFramesContext *ctx, AVFrame *frame)
|
|
{
|
|
int aligned_width;
|
|
int width_in_bytes = ctx->width;
|
|
|
|
if (ctx->sw_format == AV_PIX_FMT_P010 ||
|
|
ctx->sw_format == AV_PIX_FMT_P016) {
|
|
width_in_bytes *= 2;
|
|
}
|
|
aligned_width = FFALIGN(width_in_bytes, CUDA_FRAME_ALIGNMENT);
|
|
|
|
frame->buf[0] = av_buffer_pool_get(ctx->pool);
|
|
if (!frame->buf[0])
|
|
return AVERROR(ENOMEM);
|
|
|
|
switch (ctx->sw_format) {
|
|
case AV_PIX_FMT_NV12:
|
|
case AV_PIX_FMT_P010:
|
|
case AV_PIX_FMT_P016:
|
|
frame->data[0] = frame->buf[0]->data;
|
|
frame->data[1] = frame->data[0] + aligned_width * ctx->height;
|
|
frame->linesize[0] = aligned_width;
|
|
frame->linesize[1] = aligned_width;
|
|
break;
|
|
case AV_PIX_FMT_YUV420P:
|
|
frame->data[0] = frame->buf[0]->data;
|
|
frame->data[2] = frame->data[0] + aligned_width * ctx->height;
|
|
frame->data[1] = frame->data[2] + aligned_width * ctx->height / 4;
|
|
frame->linesize[0] = aligned_width;
|
|
frame->linesize[1] = aligned_width / 2;
|
|
frame->linesize[2] = aligned_width / 2;
|
|
break;
|
|
case AV_PIX_FMT_YUV444P:
|
|
frame->data[0] = frame->buf[0]->data;
|
|
frame->data[1] = frame->data[0] + aligned_width * ctx->height;
|
|
frame->data[2] = frame->data[1] + aligned_width * ctx->height;
|
|
frame->linesize[0] = aligned_width;
|
|
frame->linesize[1] = aligned_width;
|
|
frame->linesize[2] = aligned_width;
|
|
break;
|
|
default:
|
|
av_frame_unref(frame);
|
|
return AVERROR_BUG;
|
|
}
|
|
|
|
frame->format = AV_PIX_FMT_CUDA;
|
|
frame->width = ctx->width;
|
|
frame->height = ctx->height;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cuda_transfer_get_formats(AVHWFramesContext *ctx,
|
|
enum AVHWFrameTransferDirection dir,
|
|
enum AVPixelFormat **formats)
|
|
{
|
|
enum AVPixelFormat *fmts;
|
|
|
|
fmts = av_malloc_array(2, sizeof(*fmts));
|
|
if (!fmts)
|
|
return AVERROR(ENOMEM);
|
|
|
|
fmts[0] = ctx->sw_format;
|
|
fmts[1] = AV_PIX_FMT_NONE;
|
|
|
|
*formats = fmts;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cuda_transfer_data_from(AVHWFramesContext *ctx, AVFrame *dst,
|
|
const AVFrame *src)
|
|
{
|
|
CUDAFramesContext *priv = ctx->internal->priv;
|
|
AVCUDADeviceContext *device_hwctx = ctx->device_ctx->hwctx;
|
|
CudaFunctions *cu = device_hwctx->internal->cuda_dl;
|
|
|
|
CUcontext dummy;
|
|
CUresult err;
|
|
int i;
|
|
|
|
err = cu->cuCtxPushCurrent(device_hwctx->cuda_ctx);
|
|
if (err != CUDA_SUCCESS)
|
|
return AVERROR_UNKNOWN;
|
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(src->data) && src->data[i]; i++) {
|
|
CUDA_MEMCPY2D cpy = {
|
|
.srcMemoryType = CU_MEMORYTYPE_DEVICE,
|
|
.dstMemoryType = CU_MEMORYTYPE_HOST,
|
|
.srcDevice = (CUdeviceptr)src->data[i],
|
|
.dstHost = dst->data[i],
|
|
.srcPitch = src->linesize[i],
|
|
.dstPitch = dst->linesize[i],
|
|
.WidthInBytes = FFMIN(src->linesize[i], dst->linesize[i]),
|
|
.Height = src->height >> (i ? priv->shift_height : 0),
|
|
};
|
|
|
|
err = cu->cuMemcpy2D(&cpy);
|
|
if (err != CUDA_SUCCESS) {
|
|
av_log(ctx, AV_LOG_ERROR, "Error transferring the data from the CUDA frame\n");
|
|
return AVERROR_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
cu->cuCtxPopCurrent(&dummy);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cuda_transfer_data_to(AVHWFramesContext *ctx, AVFrame *dst,
|
|
const AVFrame *src)
|
|
{
|
|
CUDAFramesContext *priv = ctx->internal->priv;
|
|
AVCUDADeviceContext *device_hwctx = ctx->device_ctx->hwctx;
|
|
CudaFunctions *cu = device_hwctx->internal->cuda_dl;
|
|
|
|
CUcontext dummy;
|
|
CUresult err;
|
|
int i;
|
|
|
|
err = cu->cuCtxPushCurrent(device_hwctx->cuda_ctx);
|
|
if (err != CUDA_SUCCESS)
|
|
return AVERROR_UNKNOWN;
|
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(src->data) && src->data[i]; i++) {
|
|
CUDA_MEMCPY2D cpy = {
|
|
.srcMemoryType = CU_MEMORYTYPE_HOST,
|
|
.dstMemoryType = CU_MEMORYTYPE_DEVICE,
|
|
.srcHost = src->data[i],
|
|
.dstDevice = (CUdeviceptr)dst->data[i],
|
|
.srcPitch = src->linesize[i],
|
|
.dstPitch = dst->linesize[i],
|
|
.WidthInBytes = FFMIN(src->linesize[i], dst->linesize[i]),
|
|
.Height = src->height >> (i ? priv->shift_height : 0),
|
|
};
|
|
|
|
err = cu->cuMemcpy2D(&cpy);
|
|
if (err != CUDA_SUCCESS) {
|
|
av_log(ctx, AV_LOG_ERROR, "Error transferring the data from the CUDA frame\n");
|
|
return AVERROR_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
cu->cuCtxPopCurrent(&dummy);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void cuda_device_uninit(AVHWDeviceContext *ctx)
|
|
{
|
|
AVCUDADeviceContext *hwctx = ctx->hwctx;
|
|
|
|
if (hwctx->internal) {
|
|
if (hwctx->internal->is_allocated && hwctx->cuda_ctx) {
|
|
hwctx->internal->cuda_dl->cuCtxDestroy(hwctx->cuda_ctx);
|
|
hwctx->cuda_ctx = NULL;
|
|
}
|
|
cuda_free_functions(&hwctx->internal->cuda_dl);
|
|
}
|
|
|
|
av_freep(&hwctx->internal);
|
|
}
|
|
|
|
static int cuda_device_init(AVHWDeviceContext *ctx)
|
|
{
|
|
AVCUDADeviceContext *hwctx = ctx->hwctx;
|
|
int ret;
|
|
|
|
if (!hwctx->internal) {
|
|
hwctx->internal = av_mallocz(sizeof(*hwctx->internal));
|
|
if (!hwctx->internal)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
if (!hwctx->internal->cuda_dl) {
|
|
ret = cuda_load_functions(&hwctx->internal->cuda_dl);
|
|
if (ret < 0) {
|
|
av_log(ctx, AV_LOG_ERROR, "Could not dynamically load CUDA\n");
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
error:
|
|
cuda_device_uninit(ctx);
|
|
return ret;
|
|
}
|
|
|
|
static int cuda_device_create(AVHWDeviceContext *ctx, const char *device,
|
|
AVDictionary *opts, int flags)
|
|
{
|
|
AVCUDADeviceContext *hwctx = ctx->hwctx;
|
|
CudaFunctions *cu;
|
|
CUdevice cu_device;
|
|
CUcontext dummy;
|
|
CUresult err;
|
|
int device_idx = 0;
|
|
|
|
if (device)
|
|
device_idx = strtol(device, NULL, 0);
|
|
|
|
if (cuda_device_init(ctx) < 0)
|
|
goto error;
|
|
|
|
cu = hwctx->internal->cuda_dl;
|
|
|
|
err = cu->cuInit(0);
|
|
if (err != CUDA_SUCCESS) {
|
|
av_log(ctx, AV_LOG_ERROR, "Could not initialize the CUDA driver API\n");
|
|
goto error;
|
|
}
|
|
|
|
err = cu->cuDeviceGet(&cu_device, device_idx);
|
|
if (err != CUDA_SUCCESS) {
|
|
av_log(ctx, AV_LOG_ERROR, "Could not get the device number %d\n", device_idx);
|
|
goto error;
|
|
}
|
|
|
|
err = cu->cuCtxCreate(&hwctx->cuda_ctx, CU_CTX_SCHED_BLOCKING_SYNC, cu_device);
|
|
if (err != CUDA_SUCCESS) {
|
|
av_log(ctx, AV_LOG_ERROR, "Error creating a CUDA context\n");
|
|
goto error;
|
|
}
|
|
|
|
cu->cuCtxPopCurrent(&dummy);
|
|
|
|
hwctx->internal->is_allocated = 1;
|
|
|
|
return 0;
|
|
|
|
error:
|
|
cuda_device_uninit(ctx);
|
|
return AVERROR_UNKNOWN;
|
|
}
|
|
|
|
const HWContextType ff_hwcontext_type_cuda = {
|
|
.type = AV_HWDEVICE_TYPE_CUDA,
|
|
.name = "CUDA",
|
|
|
|
.device_hwctx_size = sizeof(AVCUDADeviceContext),
|
|
.frames_priv_size = sizeof(CUDAFramesContext),
|
|
|
|
.device_create = cuda_device_create,
|
|
.device_init = cuda_device_init,
|
|
.device_uninit = cuda_device_uninit,
|
|
.frames_get_constraints = cuda_frames_get_constraints,
|
|
.frames_init = cuda_frames_init,
|
|
.frames_get_buffer = cuda_get_buffer,
|
|
.transfer_get_formats = cuda_transfer_get_formats,
|
|
.transfer_data_to = cuda_transfer_data_to,
|
|
.transfer_data_from = cuda_transfer_data_from,
|
|
|
|
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_CUDA, AV_PIX_FMT_NONE },
|
|
};
|