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avcodec/cuvid: add support for cropping/resizing

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Overhauled version, original patch by Miroslav Slugeň <thunder.m@email.cz>.
This commit is contained in:
Timo Rothenpieler 2017-03-05 15:32:36 +01:00
parent 58eb0f57f6
commit 5cd3cd5b68
1 changed files with 66 additions and 19 deletions
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85
libavcodec/cuvid.c
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@ -43,6 +43,20 @@ typedef struct CuvidContext
char *cu_gpu;
int nb_surfaces;
int drop_second_field;
char *crop_expr;
char *resize_expr;
struct {
int left;
int top;
int right;
int bottom;
} crop;
struct {
int width;
int height;
} resize;
AVBufferRef *hwdevice;
AVBufferRef *hwframe;
@ -107,17 +121,46 @@ static int CUDAAPI cuvid_handle_video_sequence(void *opaque, CUVIDEOFORMAT* form
CUVIDDECODECREATEINFO cuinfo;
int surface_fmt;
int old_width = avctx->width;
int old_height = avctx->height;
enum AVPixelFormat pix_fmts[3] = { AV_PIX_FMT_CUDA,
AV_PIX_FMT_NONE, // Will be updated below
AV_PIX_FMT_NONE };
av_log(avctx, AV_LOG_TRACE, "pfnSequenceCallback, progressive_sequence=%d\n", format->progressive_sequence);
memset(&cuinfo, 0, sizeof(cuinfo));
ctx->internal_error = 0;
avctx->coded_width = cuinfo.ulWidth = format->coded_width;
avctx->coded_height = cuinfo.ulHeight = format->coded_height;
// apply cropping
cuinfo.display_area.left = format->display_area.left + ctx->crop.left;
cuinfo.display_area.top = format->display_area.top + ctx->crop.top;
cuinfo.display_area.right = format->display_area.right - ctx->crop.right;
cuinfo.display_area.bottom = format->display_area.bottom - ctx->crop.bottom;
// width and height need to be set before calling ff_get_format
avctx->width = format->display_area.right;
avctx->height = format->display_area.bottom;
if (ctx->resize_expr) {
avctx->width = ctx->resize.width;
avctx->height = ctx->resize.height;
} else {
avctx->width = cuinfo.display_area.right - cuinfo.display_area.left;
avctx->height = cuinfo.display_area.bottom - cuinfo.display_area.top;
}
// target width/height need to be multiples of two
cuinfo.ulTargetWidth = avctx->width = (avctx->width + 1) & ~1;
cuinfo.ulTargetHeight = avctx->height = (avctx->height + 1) & ~1;
// aspect ratio conversion, 1:1, depends on scaled resolution
cuinfo.target_rect.left = 0;
cuinfo.target_rect.top = 0;
cuinfo.target_rect.right = cuinfo.ulTargetWidth;
cuinfo.target_rect.bottom = cuinfo.ulTargetHeight;
switch (format->bit_depth_luma_minus8) {
case 0: // 8-bit
@ -195,6 +238,8 @@ static int CUDAAPI cuvid_handle_video_sequence(void *opaque, CUVIDEOFORMAT* form
if (ctx->cudecoder
&& avctx->coded_width == format->coded_width
&& avctx->coded_height == format->coded_height
&& avctx->width == old_width
&& avctx->height == old_height
&& ctx->chroma_format == format->chroma_format
&& ctx->codec_type == format->codec)
return 1;
@ -228,13 +273,8 @@ static int CUDAAPI cuvid_handle_video_sequence(void *opaque, CUVIDEOFORMAT* form
return 0;
}
avctx->coded_width = format->coded_width;
avctx->coded_height = format->coded_height;
ctx->chroma_format = format->chroma_format;
memset(&cuinfo, 0, sizeof(cuinfo));
cuinfo.CodecType = ctx->codec_type = format->codec;
cuinfo.ChromaFormat = format->chroma_format;
@ -252,16 +292,6 @@ static int CUDAAPI cuvid_handle_video_sequence(void *opaque, CUVIDEOFORMAT* form
return 0;
}
cuinfo.ulWidth = avctx->coded_width;
cuinfo.ulHeight = avctx->coded_height;
cuinfo.ulTargetWidth = cuinfo.ulWidth;
cuinfo.ulTargetHeight = cuinfo.ulHeight;
cuinfo.target_rect.left = 0;
cuinfo.target_rect.top = 0;
cuinfo.target_rect.right = cuinfo.ulWidth;
cuinfo.target_rect.bottom = cuinfo.ulHeight;
cuinfo.ulNumDecodeSurfaces = ctx->nb_surfaces;
cuinfo.ulNumOutputSurfaces = 1;
cuinfo.ulCreationFlags = cudaVideoCreate_PreferCUVID;
@ -486,7 +516,7 @@ static int cuvid_output_frame(AVCodecContext *avctx, AVFrame *frame)
if (ret < 0)
goto error;
offset += avctx->coded_height;
offset += avctx->height;
}
} else if (avctx->pix_fmt == AV_PIX_FMT_NV12 ||
avctx->pix_fmt == AV_PIX_FMT_P010 ||
@ -502,7 +532,7 @@ static int cuvid_output_frame(AVCodecContext *avctx, AVFrame *frame)
tmp_frame->hw_frames_ctx = av_buffer_ref(ctx->hwframe);
tmp_frame->data[0] = (uint8_t*)mapped_frame;
tmp_frame->linesize[0] = pitch;
tmp_frame->data[1] = (uint8_t*)(mapped_frame + avctx->coded_height * pitch);
tmp_frame->data[1] = (uint8_t*)(mapped_frame + avctx->height * pitch);
tmp_frame->linesize[1] = pitch;
tmp_frame->width = avctx->width;
tmp_frame->height = avctx->height;
@ -708,6 +738,21 @@ static av_cold int cuvid_decode_init(AVCodecContext *avctx)
}
avctx->pix_fmt = ret;
if (ctx->resize_expr && sscanf(ctx->resize_expr, "%dx%d",
&ctx->resize.width, &ctx->resize.height) != 2) {
av_log(avctx, AV_LOG_ERROR, "Invalid resize expressions\n");
ret = AVERROR(EINVAL);
goto error;
}
if (ctx->crop_expr && sscanf(ctx->crop_expr, "%dx%dx%dx%d",
&ctx->crop.top, &ctx->crop.bottom,
&ctx->crop.left, &ctx->crop.right) != 4) {
av_log(avctx, AV_LOG_ERROR, "Invalid cropping expressions\n");
ret = AVERROR(EINVAL);
goto error;
}
ret = cuvid_load_functions(&ctx->cvdl);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed loading nvcuvid.\n");
@ -953,6 +998,8 @@ static const AVOption options[] = {
{ "gpu", "GPU to be used for decoding", OFFSET(cu_gpu), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, VD },
{ "surfaces", "Maximum surfaces to be used for decoding", OFFSET(nb_surfaces), AV_OPT_TYPE_INT, { .i64 = 25 }, 0, INT_MAX, VD },
{ "drop_second_field", "Drop second field when deinterlacing", OFFSET(drop_second_field), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VD },
{ "crop", "Crop (top)x(bottom)x(left)x(right)", OFFSET(crop_expr), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, VD },
{ "resize", "Resize (width)x(height)", OFFSET(resize_expr), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, VD },
{ NULL }
};