mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
h264dec: add a NVDEC hwaccel
Some parts of the code are based on a patch by
Timo Rothenpieler <timo@rothenpieler.org>
Merges Libav commit b9129ec466
.
Due to the name clash with our cuvid decoder, rename it to nvdec.
This commit also changes the Libav code to dynamic loading of the
cuda/cuvid libraries.
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
This commit is contained in:
parent
0aecc08e5f
commit
0e00624389
@ -13,6 +13,7 @@ version <next>:
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- PCE support for extended channel layouts in the AAC encoder
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- native aptX encoder and decoder
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- Raw aptX muxer and demuxer
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- NVIDIA NVDEC-accelerated H.264 hwaccel decoding
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version 3.4:
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10
configure
vendored
10
configure
vendored
@ -313,6 +313,7 @@ External library support:
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--enable-libmfx enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
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--enable-libnpp enable Nvidia Performance Primitives-based code [no]
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--enable-mmal enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
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--disable-nvdec disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
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--disable-nvenc disable Nvidia video encoding code [autodetect]
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--enable-omx enable OpenMAX IL code [no]
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--enable-omx-rpi enable OpenMAX IL code for Raspberry Pi [no]
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@ -1647,6 +1648,7 @@ HWACCEL_AUTODETECT_LIBRARY_LIST="
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cuvid
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d3d11va
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dxva2
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nvdec
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nvenc
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vaapi
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vdpau
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@ -2672,6 +2674,8 @@ h264_dxva2_hwaccel_deps="dxva2"
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h264_dxva2_hwaccel_select="h264_decoder"
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h264_mediacodec_hwaccel_deps="mediacodec"
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h264_mmal_hwaccel_deps="mmal"
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h264_nvdec_hwaccel_deps="cuda nvdec"
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h264_nvdec_hwaccel_select="h264_decoder"
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h264_qsv_hwaccel_deps="libmfx"
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h264_vaapi_hwaccel_deps="vaapi"
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h264_vaapi_hwaccel_select="h264_decoder"
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@ -5940,6 +5944,8 @@ done
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enabled cuda_sdk && require cuda_sdk cuda.h cuCtxCreate -lcuda
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enabled cuvid && { enabled cuda ||
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die "ERROR: CUVID requires CUDA"; }
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enabled nvdec && { enabled cuda ||
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die "ERROR: NVDEC hwaccel requires CUDA"; }
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enabled chromaprint && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
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enabled decklink && { require_header DeckLinkAPI.h &&
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{ check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
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@ -6295,11 +6301,11 @@ if enabled x86; then
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mingw32*|mingw64*|win32|win64|linux|cygwin*)
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;;
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*)
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disable cuda cuvid nvenc
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disable cuda cuvid nvdec nvenc
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;;
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esac
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else
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disable cuda cuvid nvenc
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disable cuda cuvid nvdec nvenc
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fi
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enabled nvenc &&
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@ -68,6 +68,7 @@ enum HWAccelID {
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HWACCEL_VAAPI,
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HWACCEL_CUVID,
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HWACCEL_D3D11VA,
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HWACCEL_NVDEC,
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};
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typedef struct HWAccel {
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@ -90,6 +90,10 @@ const HWAccel hwaccels[] = {
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{ "vaapi", hwaccel_decode_init, HWACCEL_VAAPI, AV_PIX_FMT_VAAPI,
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AV_HWDEVICE_TYPE_VAAPI },
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#endif
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#if CONFIG_NVDEC
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{ "nvdec", hwaccel_decode_init, HWACCEL_NVDEC, AV_PIX_FMT_CUDA,
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AV_HWDEVICE_TYPE_CUDA },
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#endif
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#if CONFIG_CUVID
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{ "cuvid", cuvid_init, HWACCEL_CUVID, AV_PIX_FMT_CUDA,
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AV_HWDEVICE_TYPE_NONE },
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@ -830,6 +830,7 @@ OBJS-$(CONFIG_ADPCM_YAMAHA_ENCODER) += adpcmenc.o adpcm_data.o
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# hardware accelerators
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OBJS-$(CONFIG_D3D11VA) += dxva2.o
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OBJS-$(CONFIG_DXVA2) += dxva2.o
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OBJS-$(CONFIG_NVDEC) += nvdec.o
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OBJS-$(CONFIG_VAAPI) += vaapi_decode.o
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OBJS-$(CONFIG_VIDEOTOOLBOX) += videotoolbox.o
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OBJS-$(CONFIG_VDPAU) += vdpau.o
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@ -838,6 +839,7 @@ OBJS-$(CONFIG_H263_VAAPI_HWACCEL) += vaapi_mpeg4.o
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OBJS-$(CONFIG_H263_VIDEOTOOLBOX_HWACCEL) += videotoolbox.o
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OBJS-$(CONFIG_H264_D3D11VA_HWACCEL) += dxva2_h264.o
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OBJS-$(CONFIG_H264_DXVA2_HWACCEL) += dxva2_h264.o
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OBJS-$(CONFIG_H264_NVDEC_HWACCEL) += nvdec_h264.o
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OBJS-$(CONFIG_H264_QSV_HWACCEL) += qsvdec_h2645.o
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OBJS-$(CONFIG_H264_VAAPI_HWACCEL) += vaapi_h264.o
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OBJS-$(CONFIG_H264_VDPAU_HWACCEL) += vdpau_h264.o
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@ -70,6 +70,7 @@ static void register_all(void)
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REGISTER_HWACCEL(H264_DXVA2, h264_dxva2);
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REGISTER_HWACCEL(H264_MEDIACODEC, h264_mediacodec);
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REGISTER_HWACCEL(H264_MMAL, h264_mmal);
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REGISTER_HWACCEL(H264_NVDEC, h264_nvdec);
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REGISTER_HWACCEL(H264_QSV, h264_qsv);
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REGISTER_HWACCEL(H264_VAAPI, h264_vaapi);
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REGISTER_HWACCEL(H264_VDPAU, h264_vdpau);
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@ -757,6 +757,7 @@ static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback)
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{
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#define HWACCEL_MAX (CONFIG_H264_DXVA2_HWACCEL + \
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(CONFIG_H264_D3D11VA_HWACCEL * 2) + \
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CONFIG_H264_NVDEC_HWACCEL + \
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CONFIG_H264_VAAPI_HWACCEL + \
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CONFIG_H264_VIDEOTOOLBOX_HWACCEL + \
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CONFIG_H264_VDPAU_HWACCEL)
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@ -812,6 +813,9 @@ static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback)
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case 8:
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#if CONFIG_H264_VDPAU_HWACCEL
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*fmt++ = AV_PIX_FMT_VDPAU;
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#endif
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#if CONFIG_H264_NVDEC_HWACCEL
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*fmt++ = AV_PIX_FMT_CUDA;
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#endif
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if (CHROMA444(h)) {
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if (h->avctx->colorspace == AVCOL_SPC_RGB)
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431
libavcodec/nvdec.c
Normal file
431
libavcodec/nvdec.c
Normal file
@ -0,0 +1,431 @@
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/*
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* HW decode acceleration through NVDEC
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*
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* Copyright (c) 2016 Anton Khirnov
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include "libavutil/common.h"
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#include "libavutil/error.h"
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#include "libavutil/hwcontext.h"
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#include "libavutil/hwcontext_cuda_internal.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/pixfmt.h"
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#include "avcodec.h"
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#include "decode.h"
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#include "nvdec.h"
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#include "internal.h"
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typedef struct NVDECDecoder {
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CUvideodecoder decoder;
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AVBufferRef *hw_device_ref;
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CUcontext cuda_ctx;
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CudaFunctions *cudl;
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CuvidFunctions *cvdl;
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} NVDECDecoder;
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typedef struct NVDECFramePool {
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unsigned int dpb_size;
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unsigned int nb_allocated;
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} NVDECFramePool;
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static int map_avcodec_id(enum AVCodecID id)
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{
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switch (id) {
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case AV_CODEC_ID_H264: return cudaVideoCodec_H264;
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}
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return -1;
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}
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static int map_chroma_format(enum AVPixelFormat pix_fmt)
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{
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int shift_h = 0, shift_v = 0;
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av_pix_fmt_get_chroma_sub_sample(pix_fmt, &shift_h, &shift_v);
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if (shift_h == 1 && shift_v == 1)
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return cudaVideoChromaFormat_420;
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else if (shift_h == 1 && shift_v == 0)
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return cudaVideoChromaFormat_422;
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else if (shift_h == 0 && shift_v == 0)
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return cudaVideoChromaFormat_444;
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return -1;
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}
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static void nvdec_decoder_free(void *opaque, uint8_t *data)
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{
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NVDECDecoder *decoder = (NVDECDecoder*)data;
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if (decoder->decoder)
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decoder->cvdl->cuvidDestroyDecoder(decoder->decoder);
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av_buffer_unref(&decoder->hw_device_ref);
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cuvid_free_functions(&decoder->cvdl);
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av_freep(&decoder);
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}
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static int nvdec_decoder_create(AVBufferRef **out, AVBufferRef *hw_device_ref,
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CUVIDDECODECREATEINFO *params, void *logctx)
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{
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AVHWDeviceContext *hw_device_ctx = (AVHWDeviceContext*)hw_device_ref->data;
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AVCUDADeviceContext *device_hwctx = hw_device_ctx->hwctx;
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AVBufferRef *decoder_ref;
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NVDECDecoder *decoder;
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CUcontext dummy;
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CUresult err;
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int ret;
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decoder = av_mallocz(sizeof(*decoder));
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if (!decoder)
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return AVERROR(ENOMEM);
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decoder_ref = av_buffer_create((uint8_t*)decoder, sizeof(*decoder),
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nvdec_decoder_free, NULL, AV_BUFFER_FLAG_READONLY);
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if (!decoder_ref) {
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av_freep(&decoder);
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return AVERROR(ENOMEM);
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}
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decoder->hw_device_ref = av_buffer_ref(hw_device_ref);
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if (!decoder->hw_device_ref) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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decoder->cuda_ctx = device_hwctx->cuda_ctx;
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decoder->cudl = device_hwctx->internal->cuda_dl;
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ret = cuvid_load_functions(&decoder->cvdl);
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if (ret < 0) {
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av_log(logctx, AV_LOG_ERROR, "Failed loading nvcuvid.\n");
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goto fail;
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}
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err = decoder->cudl->cuCtxPushCurrent(decoder->cuda_ctx);
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if (err != CUDA_SUCCESS) {
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ret = AVERROR_UNKNOWN;
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goto fail;
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}
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err = decoder->cvdl->cuvidCreateDecoder(&decoder->decoder, params);
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decoder->cudl->cuCtxPopCurrent(&dummy);
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if (err != CUDA_SUCCESS) {
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av_log(logctx, AV_LOG_ERROR, "Error creating a NVDEC decoder: %d\n", err);
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ret = AVERROR_UNKNOWN;
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goto fail;
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}
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*out = decoder_ref;
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return 0;
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fail:
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av_buffer_unref(&decoder_ref);
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return ret;
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}
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static AVBufferRef *nvdec_decoder_frame_alloc(void *opaque, int size)
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{
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NVDECFramePool *pool = opaque;
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AVBufferRef *ret;
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if (pool->nb_allocated >= pool->dpb_size)
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return NULL;
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ret = av_buffer_alloc(sizeof(unsigned int));
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if (!ret)
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return NULL;
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*(unsigned int*)ret->data = pool->nb_allocated++;
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return ret;
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}
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int ff_nvdec_decode_uninit(AVCodecContext *avctx)
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{
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NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
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av_freep(&ctx->bitstream);
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ctx->bitstream_len = 0;
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ctx->bitstream_allocated = 0;
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av_freep(&ctx->slice_offsets);
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ctx->nb_slices = 0;
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ctx->slice_offsets_allocated = 0;
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av_buffer_unref(&ctx->decoder_ref);
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av_buffer_pool_uninit(&ctx->decoder_pool);
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return 0;
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}
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int ff_nvdec_decode_init(AVCodecContext *avctx, unsigned int dpb_size)
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{
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NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
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NVDECFramePool *pool;
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AVHWFramesContext *frames_ctx;
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const AVPixFmtDescriptor *sw_desc;
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CUVIDDECODECREATEINFO params = { 0 };
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int cuvid_codec_type, cuvid_chroma_format;
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int ret = 0;
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sw_desc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
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if (!sw_desc)
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return AVERROR_BUG;
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cuvid_codec_type = map_avcodec_id(avctx->codec_id);
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if (cuvid_codec_type < 0) {
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av_log(avctx, AV_LOG_ERROR, "Unsupported codec ID\n");
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return AVERROR_BUG;
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}
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cuvid_chroma_format = map_chroma_format(avctx->sw_pix_fmt);
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if (cuvid_chroma_format < 0) {
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av_log(avctx, AV_LOG_ERROR, "Unsupported chroma format\n");
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return AVERROR(ENOSYS);
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}
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if (avctx->thread_type & FF_THREAD_FRAME)
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dpb_size += avctx->thread_count;
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if (!avctx->hw_frames_ctx) {
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AVHWFramesContext *frames_ctx;
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if (!avctx->hw_device_ctx) {
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av_log(avctx, AV_LOG_ERROR, "A hardware device or frames context "
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"is required for CUVID decoding.\n");
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return AVERROR(EINVAL);
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}
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avctx->hw_frames_ctx = av_hwframe_ctx_alloc(avctx->hw_device_ctx);
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if (!avctx->hw_frames_ctx)
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return AVERROR(ENOMEM);
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frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
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frames_ctx->format = AV_PIX_FMT_CUDA;
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frames_ctx->width = avctx->coded_width;
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frames_ctx->height = avctx->coded_height;
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frames_ctx->sw_format = AV_PIX_FMT_NV12;
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frames_ctx->sw_format = sw_desc->comp[0].depth > 8 ?
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AV_PIX_FMT_P010 : AV_PIX_FMT_NV12;
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frames_ctx->initial_pool_size = dpb_size;
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ret = av_hwframe_ctx_init(avctx->hw_frames_ctx);
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if (ret < 0) {
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av_log(avctx, AV_LOG_ERROR, "Error initializing internal frames context\n");
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return ret;
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}
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}
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frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
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params.ulWidth = avctx->coded_width;
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params.ulHeight = avctx->coded_height;
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params.ulTargetWidth = avctx->coded_width;
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params.ulTargetHeight = avctx->coded_height;
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params.bitDepthMinus8 = sw_desc->comp[0].depth - 8;
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params.OutputFormat = params.bitDepthMinus8 ?
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cudaVideoSurfaceFormat_P016 : cudaVideoSurfaceFormat_NV12;
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params.CodecType = cuvid_codec_type;
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params.ChromaFormat = cuvid_chroma_format;
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params.ulNumDecodeSurfaces = dpb_size;
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params.ulNumOutputSurfaces = 1;
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ret = nvdec_decoder_create(&ctx->decoder_ref, frames_ctx->device_ref, ¶ms, avctx);
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if (ret < 0)
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return ret;
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pool = av_mallocz(sizeof(*pool));
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if (!pool) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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pool->dpb_size = dpb_size;
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ctx->decoder_pool = av_buffer_pool_init2(sizeof(int), pool,
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nvdec_decoder_frame_alloc, av_free);
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if (!ctx->decoder_pool) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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return 0;
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fail:
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ff_nvdec_decode_uninit(avctx);
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return ret;
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}
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static void nvdec_fdd_priv_free(void *priv)
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{
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NVDECFrame *cf = priv;
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if (!cf)
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return;
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av_buffer_unref(&cf->idx_ref);
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av_buffer_unref(&cf->decoder_ref);
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av_freep(&priv);
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}
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static int nvdec_retrieve_data(void *logctx, AVFrame *frame)
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{
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FrameDecodeData *fdd = (FrameDecodeData*)frame->private_ref->data;
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NVDECFrame *cf = (NVDECFrame*)fdd->hwaccel_priv;
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NVDECDecoder *decoder = (NVDECDecoder*)cf->decoder_ref->data;
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CUVIDPROCPARAMS vpp = { .progressive_frame = 1 };
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CUresult err;
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CUcontext dummy;
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CUdeviceptr devptr;
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||||
unsigned int pitch, i;
|
||||
unsigned int offset = 0;
|
||||
int ret = 0;
|
||||
|
||||
err = decoder->cudl->cuCtxPushCurrent(decoder->cuda_ctx);
|
||||
if (err != CUDA_SUCCESS)
|
||||
return AVERROR_UNKNOWN;
|
||||
|
||||
err = decoder->cvdl->cuvidMapVideoFrame(decoder->decoder, cf->idx, &devptr,
|
||||
&pitch, &vpp);
|
||||
if (err != CUDA_SUCCESS) {
|
||||
av_log(logctx, AV_LOG_ERROR, "Error mapping a picture with CUVID: %d\n",
|
||||
err);
|
||||
ret = AVERROR_UNKNOWN;
|
||||
goto finish;
|
||||
}
|
||||
|
||||
for (i = 0; frame->data[i]; i++) {
|
||||
CUDA_MEMCPY2D cpy = {
|
||||
.srcMemoryType = CU_MEMORYTYPE_DEVICE,
|
||||
.dstMemoryType = CU_MEMORYTYPE_DEVICE,
|
||||
.srcDevice = devptr,
|
||||
.dstDevice = (CUdeviceptr)frame->data[i],
|
||||
.srcPitch = pitch,
|
||||
.dstPitch = frame->linesize[i],
|
||||
.srcY = offset,
|
||||
.WidthInBytes = FFMIN(pitch, frame->linesize[i]),
|
||||
.Height = frame->height >> (i ? 1 : 0),
|
||||
};
|
||||
|
||||
err = decoder->cudl->cuMemcpy2D(&cpy);
|
||||
if (err != CUDA_SUCCESS) {
|
||||
av_log(logctx, AV_LOG_ERROR, "Error copying decoded frame: %d\n",
|
||||
err);
|
||||
ret = AVERROR_UNKNOWN;
|
||||
goto copy_fail;
|
||||
}
|
||||
|
||||
offset += cpy.Height;
|
||||
}
|
||||
|
||||
copy_fail:
|
||||
decoder->cvdl->cuvidUnmapVideoFrame(decoder->decoder, devptr);
|
||||
|
||||
finish:
|
||||
decoder->cudl->cuCtxPopCurrent(&dummy);
|
||||
return ret;
|
||||
}
|
||||
|
||||
int ff_nvdec_start_frame(AVCodecContext *avctx, AVFrame *frame)
|
||||
{
|
||||
NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
|
||||
FrameDecodeData *fdd = (FrameDecodeData*)frame->private_ref->data;
|
||||
NVDECFrame *cf = NULL;
|
||||
int ret;
|
||||
|
||||
ctx->bitstream_len = 0;
|
||||
ctx->nb_slices = 0;
|
||||
|
||||
if (fdd->hwaccel_priv)
|
||||
return 0;
|
||||
|
||||
cf = av_mallocz(sizeof(*cf));
|
||||
if (!cf)
|
||||
return AVERROR(ENOMEM);
|
||||
|
||||
cf->decoder_ref = av_buffer_ref(ctx->decoder_ref);
|
||||
if (!cf->decoder_ref)
|
||||
goto fail;
|
||||
|
||||
cf->idx_ref = av_buffer_pool_get(ctx->decoder_pool);
|
||||
if (!cf->idx_ref) {
|
||||
av_log(avctx, AV_LOG_ERROR, "No decoder surfaces left\n");
|
||||
ret = AVERROR(ENOMEM);
|
||||
goto fail;
|
||||
}
|
||||
cf->idx = *(unsigned int*)cf->idx_ref->data;
|
||||
|
||||
fdd->hwaccel_priv = cf;
|
||||
fdd->hwaccel_priv_free = nvdec_fdd_priv_free;
|
||||
fdd->post_process = nvdec_retrieve_data;
|
||||
|
||||
return 0;
|
||||
fail:
|
||||
nvdec_fdd_priv_free(cf);
|
||||
return ret;
|
||||
|
||||
}
|
||||
|
||||
int ff_nvdec_end_frame(AVCodecContext *avctx)
|
||||
{
|
||||
NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
|
||||
NVDECDecoder *decoder = (NVDECDecoder*)ctx->decoder_ref->data;
|
||||
CUVIDPICPARAMS *pp = &ctx->pic_params;
|
||||
|
||||
CUresult err;
|
||||
CUcontext dummy;
|
||||
|
||||
int ret = 0;
|
||||
|
||||
pp->nBitstreamDataLen = ctx->bitstream_len;
|
||||
pp->pBitstreamData = ctx->bitstream;
|
||||
pp->nNumSlices = ctx->nb_slices;
|
||||
pp->pSliceDataOffsets = ctx->slice_offsets;
|
||||
|
||||
err = decoder->cudl->cuCtxPushCurrent(decoder->cuda_ctx);
|
||||
if (err != CUDA_SUCCESS)
|
||||
return AVERROR_UNKNOWN;
|
||||
|
||||
err = decoder->cvdl->cuvidDecodePicture(decoder->decoder, &ctx->pic_params);
|
||||
if (err != CUDA_SUCCESS) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Error decoding a picture with NVDEC: %d\n",
|
||||
err);
|
||||
ret = AVERROR_UNKNOWN;
|
||||
goto finish;
|
||||
}
|
||||
|
||||
finish:
|
||||
decoder->cudl->cuCtxPopCurrent(&dummy);
|
||||
|
||||
return ret;
|
||||
}
|
62
libavcodec/nvdec.h
Normal file
62
libavcodec/nvdec.h
Normal file
@ -0,0 +1,62 @@
|
||||
/*
|
||||
* HW decode acceleration through NVDEC
|
||||
*
|
||||
* Copyright (c) 2016 Anton Khirnov
|
||||
*
|
||||
* This file is part of Libav.
|
||||
*
|
||||
* Libav 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.
|
||||
*
|
||||
* Libav 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 Libav; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#ifndef AVCODEC_NVDEC_H
|
||||
#define AVCODEC_NVDEC_H
|
||||
|
||||
#include "compat/cuda/dynlink_loader.h"
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#include "libavutil/buffer.h"
|
||||
#include "libavutil/frame.h"
|
||||
|
||||
#include "avcodec.h"
|
||||
|
||||
typedef struct NVDECFrame {
|
||||
unsigned int idx;
|
||||
AVBufferRef *idx_ref;
|
||||
AVBufferRef *decoder_ref;
|
||||
} NVDECFrame;
|
||||
|
||||
typedef struct NVDECContext {
|
||||
CUVIDPICPARAMS pic_params;
|
||||
|
||||
AVBufferPool *decoder_pool;
|
||||
|
||||
AVBufferRef *decoder_ref;
|
||||
|
||||
uint8_t *bitstream;
|
||||
int bitstream_len;
|
||||
unsigned int bitstream_allocated;
|
||||
|
||||
unsigned *slice_offsets;
|
||||
int nb_slices;
|
||||
unsigned int slice_offsets_allocated;
|
||||
} NVDECContext;
|
||||
|
||||
int ff_nvdec_decode_init(AVCodecContext *avctx, unsigned int dpb_size);
|
||||
int ff_nvdec_decode_uninit(AVCodecContext *avctx);
|
||||
int ff_nvdec_start_frame(AVCodecContext *avctx, AVFrame *frame);
|
||||
int ff_nvdec_end_frame(AVCodecContext *avctx);
|
||||
|
||||
#endif /* AVCODEC_NVDEC_H */
|
176
libavcodec/nvdec_h264.c
Normal file
176
libavcodec/nvdec_h264.c
Normal file
@ -0,0 +1,176 @@
|
||||
/*
|
||||
* MPEG-4 Part 10 / AVC / H.264 HW decode acceleration through NVDEC
|
||||
*
|
||||
* Copyright (c) 2016 Anton Khirnov
|
||||
*
|
||||
* This file is part of Libav.
|
||||
*
|
||||
* Libav 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.
|
||||
*
|
||||
* Libav 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 Libav; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "avcodec.h"
|
||||
#include "nvdec.h"
|
||||
#include "decode.h"
|
||||
#include "internal.h"
|
||||
#include "h264dec.h"
|
||||
|
||||
static void dpb_add(const H264Context *h, CUVIDH264DPBENTRY *dst, const H264Picture *src,
|
||||
int frame_idx)
|
||||
{
|
||||
FrameDecodeData *fdd = (FrameDecodeData*)src->f->private_ref->data;
|
||||
const NVDECFrame *cf = fdd->hwaccel_priv;
|
||||
|
||||
dst->PicIdx = cf ? cf->idx : -1;
|
||||
dst->FrameIdx = frame_idx;
|
||||
dst->is_long_term = src->long_ref;
|
||||
dst->not_existing = 0;
|
||||
dst->used_for_reference = src->reference & 3;
|
||||
dst->FieldOrderCnt[0] = src->field_poc[0];
|
||||
dst->FieldOrderCnt[1] = src->field_poc[1];
|
||||
}
|
||||
|
||||
static int nvdec_h264_start_frame(AVCodecContext *avctx,
|
||||
const uint8_t *buffer, uint32_t size)
|
||||
{
|
||||
const H264Context *h = avctx->priv_data;
|
||||
const PPS *pps = h->ps.pps;
|
||||
const SPS *sps = h->ps.sps;
|
||||
|
||||
NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
|
||||
CUVIDPICPARAMS *pp = &ctx->pic_params;
|
||||
CUVIDH264PICPARAMS *ppc = &pp->CodecSpecific.h264;
|
||||
FrameDecodeData *fdd;
|
||||
NVDECFrame *cf;
|
||||
|
||||
int i, dpb_size, ret;
|
||||
|
||||
ret = ff_nvdec_start_frame(avctx, h->cur_pic_ptr->f);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
fdd = (FrameDecodeData*)h->cur_pic_ptr->f->private_ref->data;
|
||||
cf = (NVDECFrame*)fdd->hwaccel_priv;
|
||||
|
||||
*pp = (CUVIDPICPARAMS) {
|
||||
.PicWidthInMbs = h->mb_width,
|
||||
.FrameHeightInMbs = h->mb_height,
|
||||
.CurrPicIdx = cf->idx,
|
||||
.field_pic_flag = FIELD_PICTURE(h),
|
||||
.bottom_field_flag = h->picture_structure == PICT_BOTTOM_FIELD,
|
||||
.second_field = FIELD_PICTURE(h) && !h->first_field,
|
||||
.ref_pic_flag = h->nal_ref_idc != 0,
|
||||
.intra_pic_flag = 0,
|
||||
|
||||
.CodecSpecific.h264 = {
|
||||
.log2_max_frame_num_minus4 = sps->log2_max_frame_num - 4,
|
||||
.pic_order_cnt_type = sps->poc_type,
|
||||
.log2_max_pic_order_cnt_lsb_minus4 = FFMAX(sps->log2_max_poc_lsb - 4, 0),
|
||||
.delta_pic_order_always_zero_flag = sps->delta_pic_order_always_zero_flag,
|
||||
.frame_mbs_only_flag = sps->frame_mbs_only_flag,
|
||||
.direct_8x8_inference_flag = sps->direct_8x8_inference_flag,
|
||||
.num_ref_frames = sps->ref_frame_count,
|
||||
.residual_colour_transform_flag = sps->residual_color_transform_flag,
|
||||
.bit_depth_luma_minus8 = sps->bit_depth_luma - 8,
|
||||
.bit_depth_chroma_minus8 = sps->bit_depth_chroma - 8,
|
||||
.qpprime_y_zero_transform_bypass_flag = sps->transform_bypass,
|
||||
|
||||
.entropy_coding_mode_flag = pps->cabac,
|
||||
.pic_order_present_flag = pps->pic_order_present,
|
||||
.num_ref_idx_l0_active_minus1 = pps->ref_count[0] - 1,
|
||||
.num_ref_idx_l1_active_minus1 = pps->ref_count[1] - 1,
|
||||
.weighted_pred_flag = pps->weighted_pred,
|
||||
.weighted_bipred_idc = pps->weighted_bipred_idc,
|
||||
.pic_init_qp_minus26 = pps->init_qp - 26,
|
||||
.deblocking_filter_control_present_flag = pps->deblocking_filter_parameters_present,
|
||||
.redundant_pic_cnt_present_flag = pps->redundant_pic_cnt_present,
|
||||
.transform_8x8_mode_flag = pps->transform_8x8_mode,
|
||||
.MbaffFrameFlag = sps->mb_aff && !FIELD_PICTURE(h),
|
||||
.constrained_intra_pred_flag = pps->constrained_intra_pred,
|
||||
.chroma_qp_index_offset = pps->chroma_qp_index_offset[0],
|
||||
.second_chroma_qp_index_offset = pps->chroma_qp_index_offset[1],
|
||||
.ref_pic_flag = h->nal_ref_idc != 0,
|
||||
.frame_num = h->poc.frame_num,
|
||||
.CurrFieldOrderCnt[0] = h->cur_pic_ptr->field_poc[0],
|
||||
.CurrFieldOrderCnt[1] = h->cur_pic_ptr->field_poc[1],
|
||||
},
|
||||
};
|
||||
|
||||
memcpy(ppc->WeightScale4x4, pps->scaling_matrix4, sizeof(ppc->WeightScale4x4));
|
||||
memcpy(ppc->WeightScale8x8[0], pps->scaling_matrix8[0], sizeof(ppc->WeightScale8x8[0]));
|
||||
memcpy(ppc->WeightScale8x8[1], pps->scaling_matrix8[3], sizeof(ppc->WeightScale8x8[0]));
|
||||
|
||||
dpb_size = 0;
|
||||
for (i = 0; i < h->short_ref_count; i++)
|
||||
dpb_add(h, &ppc->dpb[dpb_size++], h->short_ref[i], h->short_ref[i]->frame_num);
|
||||
for (i = 0; i < 16; i++) {
|
||||
if (h->long_ref[i])
|
||||
dpb_add(h, &ppc->dpb[dpb_size++], h->long_ref[i], i);
|
||||
}
|
||||
|
||||
for (i = dpb_size; i < FF_ARRAY_ELEMS(ppc->dpb); i++)
|
||||
ppc->dpb[i].PicIdx = -1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int nvdec_h264_decode_slice(AVCodecContext *avctx, const uint8_t *buffer,
|
||||
uint32_t size)
|
||||
{
|
||||
NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
|
||||
void *tmp;
|
||||
|
||||
tmp = av_fast_realloc(ctx->bitstream, &ctx->bitstream_allocated,
|
||||
ctx->bitstream_len + size + 3);
|
||||
if (!tmp)
|
||||
return AVERROR(ENOMEM);
|
||||
ctx->bitstream = tmp;
|
||||
|
||||
tmp = av_fast_realloc(ctx->slice_offsets, &ctx->slice_offsets_allocated,
|
||||
(ctx->nb_slices + 1) * sizeof(*ctx->slice_offsets));
|
||||
if (!tmp)
|
||||
return AVERROR(ENOMEM);
|
||||
ctx->slice_offsets = tmp;
|
||||
|
||||
AV_WB24(ctx->bitstream + ctx->bitstream_len, 1);
|
||||
memcpy(ctx->bitstream + ctx->bitstream_len + 3, buffer, size);
|
||||
ctx->slice_offsets[ctx->nb_slices] = ctx->bitstream_len ;
|
||||
ctx->bitstream_len += size + 3;
|
||||
ctx->nb_slices++;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int nvdec_h264_decode_init(AVCodecContext *avctx)
|
||||
{
|
||||
const H264Context *h = avctx->priv_data;
|
||||
const SPS *sps = h->ps.sps;
|
||||
return ff_nvdec_decode_init(avctx, sps->ref_frame_count + sps->num_reorder_frames);
|
||||
}
|
||||
|
||||
AVHWAccel ff_h264_nvdec_hwaccel = {
|
||||
.name = "h264_nvdec",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.id = AV_CODEC_ID_H264,
|
||||
.pix_fmt = AV_PIX_FMT_CUDA,
|
||||
.start_frame = nvdec_h264_start_frame,
|
||||
.end_frame = ff_nvdec_end_frame,
|
||||
.decode_slice = nvdec_h264_decode_slice,
|
||||
.init = nvdec_h264_decode_init,
|
||||
.uninit = ff_nvdec_decode_uninit,
|
||||
.priv_data_size = sizeof(NVDECContext),
|
||||
};
|
@ -28,7 +28,7 @@
|
||||
#include "libavutil/version.h"
|
||||
|
||||
#define LIBAVCODEC_VERSION_MAJOR 58
|
||||
#define LIBAVCODEC_VERSION_MINOR 1
|
||||
#define LIBAVCODEC_VERSION_MINOR 2
|
||||
#define LIBAVCODEC_VERSION_MICRO 100
|
||||
|
||||
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
|
||||
|
Loading…
Reference in New Issue
Block a user