mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-02 03:06:28 +02:00
387 lines
11 KiB
C
387 lines
11 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "buffer.h"
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#include "common.h"
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#include "hwcontext.h"
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#include "hwcontext_internal.h"
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#include "hwcontext_cuda_internal.h"
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#include "mem.h"
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#include "pixdesc.h"
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#include "pixfmt.h"
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#define CUDA_FRAME_ALIGNMENT 256
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typedef struct CUDAFramesContext {
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int shift_width, shift_height;
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} CUDAFramesContext;
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static const enum AVPixelFormat supported_formats[] = {
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AV_PIX_FMT_NV12,
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AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_P010,
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AV_PIX_FMT_P016,
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};
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static void cuda_buffer_free(void *opaque, uint8_t *data)
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{
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AVHWFramesContext *ctx = opaque;
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AVCUDADeviceContext *hwctx = ctx->device_ctx->hwctx;
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CudaFunctions *cu = hwctx->internal->cuda_dl;
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CUcontext dummy;
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cu->cuCtxPushCurrent(hwctx->cuda_ctx);
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cu->cuMemFree((CUdeviceptr)data);
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cu->cuCtxPopCurrent(&dummy);
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}
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static AVBufferRef *cuda_pool_alloc(void *opaque, int size)
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{
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AVHWFramesContext *ctx = opaque;
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AVCUDADeviceContext *hwctx = ctx->device_ctx->hwctx;
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CudaFunctions *cu = hwctx->internal->cuda_dl;
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AVBufferRef *ret = NULL;
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CUcontext dummy = NULL;
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CUdeviceptr data;
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CUresult err;
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err = cu->cuCtxPushCurrent(hwctx->cuda_ctx);
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if (err != CUDA_SUCCESS) {
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av_log(ctx, AV_LOG_ERROR, "Error setting current CUDA context\n");
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return NULL;
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}
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err = cu->cuMemAlloc(&data, size);
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if (err != CUDA_SUCCESS)
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goto fail;
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ret = av_buffer_create((uint8_t*)data, size, cuda_buffer_free, ctx, 0);
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if (!ret) {
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cu->cuMemFree(data);
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goto fail;
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}
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fail:
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cu->cuCtxPopCurrent(&dummy);
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return ret;
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}
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static int cuda_frames_init(AVHWFramesContext *ctx)
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{
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CUDAFramesContext *priv = ctx->internal->priv;
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int aligned_width = FFALIGN(ctx->width, CUDA_FRAME_ALIGNMENT);
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int i;
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for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++) {
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if (ctx->sw_format == supported_formats[i])
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break;
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}
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if (i == FF_ARRAY_ELEMS(supported_formats)) {
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av_log(ctx, AV_LOG_ERROR, "Pixel format '%s' is not supported\n",
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av_get_pix_fmt_name(ctx->sw_format));
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return AVERROR(ENOSYS);
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}
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av_pix_fmt_get_chroma_sub_sample(ctx->sw_format, &priv->shift_width, &priv->shift_height);
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if (!ctx->pool) {
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int size;
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switch (ctx->sw_format) {
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case AV_PIX_FMT_NV12:
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case AV_PIX_FMT_YUV420P:
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size = aligned_width * ctx->height * 3 / 2;
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break;
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case AV_PIX_FMT_YUV444P:
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case AV_PIX_FMT_P010:
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case AV_PIX_FMT_P016:
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size = aligned_width * ctx->height * 3;
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break;
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default:
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av_log(ctx, AV_LOG_ERROR, "BUG: Pixel format missing from size calculation.");
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return AVERROR_BUG;
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}
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ctx->internal->pool_internal = av_buffer_pool_init2(size, ctx, cuda_pool_alloc, NULL);
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if (!ctx->internal->pool_internal)
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return AVERROR(ENOMEM);
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}
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return 0;
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}
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static int cuda_get_buffer(AVHWFramesContext *ctx, AVFrame *frame)
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{
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int aligned_width;
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int width_in_bytes = ctx->width;
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if (ctx->sw_format == AV_PIX_FMT_P010 ||
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ctx->sw_format == AV_PIX_FMT_P016) {
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width_in_bytes *= 2;
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}
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aligned_width = FFALIGN(width_in_bytes, CUDA_FRAME_ALIGNMENT);
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frame->buf[0] = av_buffer_pool_get(ctx->pool);
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if (!frame->buf[0])
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return AVERROR(ENOMEM);
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switch (ctx->sw_format) {
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case AV_PIX_FMT_NV12:
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case AV_PIX_FMT_P010:
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case AV_PIX_FMT_P016:
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frame->data[0] = frame->buf[0]->data;
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frame->data[1] = frame->data[0] + aligned_width * ctx->height;
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frame->linesize[0] = aligned_width;
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frame->linesize[1] = aligned_width;
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break;
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case AV_PIX_FMT_YUV420P:
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frame->data[0] = frame->buf[0]->data;
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frame->data[2] = frame->data[0] + aligned_width * ctx->height;
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frame->data[1] = frame->data[2] + aligned_width * ctx->height / 4;
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frame->linesize[0] = aligned_width;
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frame->linesize[1] = aligned_width / 2;
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frame->linesize[2] = aligned_width / 2;
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break;
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case AV_PIX_FMT_YUV444P:
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frame->data[0] = frame->buf[0]->data;
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frame->data[1] = frame->data[0] + aligned_width * ctx->height;
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frame->data[2] = frame->data[1] + aligned_width * ctx->height;
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frame->linesize[0] = aligned_width;
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frame->linesize[1] = aligned_width;
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frame->linesize[2] = aligned_width;
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break;
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default:
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av_frame_unref(frame);
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return AVERROR_BUG;
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}
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frame->format = AV_PIX_FMT_CUDA;
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frame->width = ctx->width;
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frame->height = ctx->height;
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return 0;
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}
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static int cuda_transfer_get_formats(AVHWFramesContext *ctx,
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enum AVHWFrameTransferDirection dir,
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enum AVPixelFormat **formats)
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{
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enum AVPixelFormat *fmts;
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fmts = av_malloc_array(2, sizeof(*fmts));
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if (!fmts)
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return AVERROR(ENOMEM);
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fmts[0] = ctx->sw_format;
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fmts[1] = AV_PIX_FMT_NONE;
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*formats = fmts;
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return 0;
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}
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static int cuda_transfer_data_from(AVHWFramesContext *ctx, AVFrame *dst,
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const AVFrame *src)
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{
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CUDAFramesContext *priv = ctx->internal->priv;
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AVCUDADeviceContext *device_hwctx = ctx->device_ctx->hwctx;
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CudaFunctions *cu = device_hwctx->internal->cuda_dl;
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CUcontext dummy;
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CUresult err;
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int i;
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err = cu->cuCtxPushCurrent(device_hwctx->cuda_ctx);
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if (err != CUDA_SUCCESS)
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return AVERROR_UNKNOWN;
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for (i = 0; i < FF_ARRAY_ELEMS(src->data) && src->data[i]; i++) {
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CUDA_MEMCPY2D cpy = {
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.srcMemoryType = CU_MEMORYTYPE_DEVICE,
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.dstMemoryType = CU_MEMORYTYPE_HOST,
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.srcDevice = (CUdeviceptr)src->data[i],
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.dstHost = dst->data[i],
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.srcPitch = src->linesize[i],
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.dstPitch = dst->linesize[i],
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.WidthInBytes = FFMIN(src->linesize[i], dst->linesize[i]),
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.Height = src->height >> (i ? priv->shift_height : 0),
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};
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err = cu->cuMemcpy2D(&cpy);
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if (err != CUDA_SUCCESS) {
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av_log(ctx, AV_LOG_ERROR, "Error transferring the data from the CUDA frame\n");
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return AVERROR_UNKNOWN;
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}
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}
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cu->cuCtxPopCurrent(&dummy);
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return 0;
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}
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static int cuda_transfer_data_to(AVHWFramesContext *ctx, AVFrame *dst,
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const AVFrame *src)
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{
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CUDAFramesContext *priv = ctx->internal->priv;
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AVCUDADeviceContext *device_hwctx = ctx->device_ctx->hwctx;
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CudaFunctions *cu = device_hwctx->internal->cuda_dl;
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CUcontext dummy;
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CUresult err;
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int i;
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err = cu->cuCtxPushCurrent(device_hwctx->cuda_ctx);
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if (err != CUDA_SUCCESS)
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return AVERROR_UNKNOWN;
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for (i = 0; i < FF_ARRAY_ELEMS(src->data) && src->data[i]; i++) {
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CUDA_MEMCPY2D cpy = {
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.srcMemoryType = CU_MEMORYTYPE_HOST,
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.dstMemoryType = CU_MEMORYTYPE_DEVICE,
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.srcHost = src->data[i],
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.dstDevice = (CUdeviceptr)dst->data[i],
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.srcPitch = src->linesize[i],
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.dstPitch = dst->linesize[i],
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.WidthInBytes = FFMIN(src->linesize[i], dst->linesize[i]),
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.Height = src->height >> (i ? priv->shift_height : 0),
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};
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err = cu->cuMemcpy2D(&cpy);
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if (err != CUDA_SUCCESS) {
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av_log(ctx, AV_LOG_ERROR, "Error transferring the data from the CUDA frame\n");
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return AVERROR_UNKNOWN;
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}
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}
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cu->cuCtxPopCurrent(&dummy);
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return 0;
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}
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static void cuda_device_uninit(AVHWDeviceContext *ctx)
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{
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AVCUDADeviceContext *hwctx = ctx->hwctx;
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if (hwctx->internal) {
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if (hwctx->internal->is_allocated && hwctx->cuda_ctx) {
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hwctx->internal->cuda_dl->cuCtxDestroy(hwctx->cuda_ctx);
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hwctx->cuda_ctx = NULL;
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}
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cuda_free_functions(&hwctx->internal->cuda_dl);
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}
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av_freep(&hwctx->internal);
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}
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static int cuda_device_init(AVHWDeviceContext *ctx)
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{
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AVCUDADeviceContext *hwctx = ctx->hwctx;
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int ret;
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if (!hwctx->internal) {
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hwctx->internal = av_mallocz(sizeof(*hwctx->internal));
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if (!hwctx->internal)
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return AVERROR(ENOMEM);
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}
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if (!hwctx->internal->cuda_dl) {
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ret = cuda_load_functions(&hwctx->internal->cuda_dl);
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if (ret < 0) {
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av_log(ctx, AV_LOG_ERROR, "Could not dynamically load CUDA\n");
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goto error;
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}
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}
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return 0;
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error:
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cuda_device_uninit(ctx);
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return ret;
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}
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static int cuda_device_create(AVHWDeviceContext *ctx, const char *device,
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AVDictionary *opts, int flags)
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{
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AVCUDADeviceContext *hwctx = ctx->hwctx;
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CudaFunctions *cu;
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CUdevice cu_device;
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CUcontext dummy;
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CUresult err;
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int device_idx = 0;
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if (device)
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device_idx = strtol(device, NULL, 0);
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if (cuda_device_init(ctx) < 0)
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goto error;
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cu = hwctx->internal->cuda_dl;
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err = cu->cuInit(0);
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if (err != CUDA_SUCCESS) {
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av_log(ctx, AV_LOG_ERROR, "Could not initialize the CUDA driver API\n");
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goto error;
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}
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err = cu->cuDeviceGet(&cu_device, device_idx);
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if (err != CUDA_SUCCESS) {
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av_log(ctx, AV_LOG_ERROR, "Could not get the device number %d\n", device_idx);
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goto error;
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}
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err = cu->cuCtxCreate(&hwctx->cuda_ctx, CU_CTX_SCHED_BLOCKING_SYNC, cu_device);
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if (err != CUDA_SUCCESS) {
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av_log(ctx, AV_LOG_ERROR, "Error creating a CUDA context\n");
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goto error;
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}
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cu->cuCtxPopCurrent(&dummy);
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hwctx->internal->is_allocated = 1;
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return 0;
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error:
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cuda_device_uninit(ctx);
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return AVERROR_UNKNOWN;
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}
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const HWContextType ff_hwcontext_type_cuda = {
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.type = AV_HWDEVICE_TYPE_CUDA,
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.name = "CUDA",
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.device_hwctx_size = sizeof(AVCUDADeviceContext),
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.frames_priv_size = sizeof(CUDAFramesContext),
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.device_create = cuda_device_create,
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.device_init = cuda_device_init,
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.device_uninit = cuda_device_uninit,
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.frames_init = cuda_frames_init,
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.frames_get_buffer = cuda_get_buffer,
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.transfer_get_formats = cuda_transfer_get_formats,
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.transfer_data_to = cuda_transfer_data_to,
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.transfer_data_from = cuda_transfer_data_from,
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.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_CUDA, AV_PIX_FMT_NONE },
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};
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