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avutil/hwcontext_cuda: query correct alignment from device

This commit is contained in:
Timo Rothenpieler 2020-11-04 00:19:55 +01:00
parent 755203c2d2
commit 2f3cb5ccca
1 changed files with 23 additions and 6 deletions
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29
libavutil/hwcontext_cuda.c
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@ -30,10 +30,9 @@
#include "pixfmt.h"
#include "imgutils.h"
#define CUDA_FRAME_ALIGNMENT 512
typedef struct CUDAFramesContext {
int shift_width, shift_height;
int tex_alignment;
} CUDAFramesContext;
static const enum AVPixelFormat supported_formats[] = {
@ -127,8 +126,11 @@ fail:
static int cuda_frames_init(AVHWFramesContext *ctx)
{
CUDAFramesContext *priv = ctx->internal->priv;
int i;
AVHWDeviceContext *device_ctx = ctx->device_ctx;
AVCUDADeviceContext *hwctx = device_ctx->hwctx;
CUDAFramesContext *priv = ctx->internal->priv;
CudaFunctions *cu = hwctx->internal->cuda_dl;
int err, i;
for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++) {
if (ctx->sw_format == supported_formats[i])
@ -140,10 +142,24 @@ static int cuda_frames_init(AVHWFramesContext *ctx)
return AVERROR(ENOSYS);
}
err = CHECK_CU(cu->cuDeviceGetAttribute(&priv->tex_alignment,
14 /* CU_DEVICE_ATTRIBUTE_TEXTURE_ALIGNMENT */,
hwctx->internal->cuda_device));
if (err < 0)
return err;
av_log(ctx, AV_LOG_DEBUG, "CUDA texture alignment: %d\n", priv->tex_alignment);
// YUV420P is a special case.
// Since nvenc expects the U/V planes to have half the linesize of the Y plane
// alignment has to be doubled to ensure the U/V planes still end up aligned.
if (ctx->sw_format == AV_PIX_FMT_YUV420P)
priv->tex_alignment *= 2;
av_pix_fmt_get_chroma_sub_sample(ctx->sw_format, &priv->shift_width, &priv->shift_height);
if (!ctx->pool) {
int size = av_image_get_buffer_size(ctx->sw_format, ctx->width, ctx->height, CUDA_FRAME_ALIGNMENT);
int size = av_image_get_buffer_size(ctx->sw_format, ctx->width, ctx->height, priv->tex_alignment);
if (size < 0)
return size;
@ -157,6 +173,7 @@ static int cuda_frames_init(AVHWFramesContext *ctx)
static int cuda_get_buffer(AVHWFramesContext *ctx, AVFrame *frame)
{
CUDAFramesContext *priv = ctx->internal->priv;
int res;
frame->buf[0] = av_buffer_pool_get(ctx->pool);
@ -164,7 +181,7 @@ static int cuda_get_buffer(AVHWFramesContext *ctx, AVFrame *frame)
return AVERROR(ENOMEM);
res = av_image_fill_arrays(frame->data, frame->linesize, frame->buf[0]->data,
ctx->sw_format, ctx->width, ctx->height, CUDA_FRAME_ALIGNMENT);
ctx->sw_format, ctx->width, ctx->height, priv->tex_alignment);
if (res < 0)
return res;