diff options
author | Timo Rothenpieler <timo@rothenpieler.org> | 2017-03-05 15:32:36 +0100 |
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committer | Timo Rothenpieler <timo@rothenpieler.org> | 2017-03-09 18:39:15 +0100 |
commit | 5cd3cd5b6872eda1775aa2ddb34fc23ca03c6c85 (patch) | |
tree | 3bc26dca8b42ad4a455f63bb4a7dee9d693cc312 /libavcodec/cuvid.c | |
parent | 58eb0f57f6702d57b6f97ec5010657bb2c076eff (diff) | |
download | ffmpeg-5cd3cd5b6872eda1775aa2ddb34fc23ca03c6c85.tar.gz |
avcodec/cuvid: add support for cropping/resizing
Overhauled version, original patch by Miroslav Slugeň <thunder.m@email.cz>.
Diffstat (limited to 'libavcodec/cuvid.c')
-rw-r--r-- | libavcodec/cuvid.c | 85 |
1 files changed, 66 insertions, 19 deletions
diff --git a/libavcodec/cuvid.c b/libavcodec/cuvid.c index c0b4a37734..916d7e9987 100644 --- a/libavcodec/cuvid.c +++ b/libavcodec/cuvid.c @@ -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 } }; 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