@@ -40,6 +40,8 @@ version <next>:

 - MagicYUV decoder

 - OpenExr improvements (tile data and B44/B44A support)

 - BitJazz SheerVideo decoder

+- CUDA CUVID H264/HEVC decoder

+

 version 3.0:

 - Common Encryption (CENC) MP4 encoding and decoding support

@@ -163,6 +163,7 @@ Codecs:

   cpia.c                                Stephan Hilb

   crystalhd.c                           Philip Langdale

   cscd.c                                Reimar Doeffinger

+  cuvid.c                               Timo Rothenpieler

   dca.c                                 Kostya Shishkov, Benjamin Larsson

   dirac*                                Rostislav Pehlivanov

   dnxhd*                                Baptiste Coudurier

@@ -158,6 +158,7 @@ Hardware accelerators:

 Hardware-accelerated decoding/encoding:

   --enable-cuda            enable dynamically linked CUDA [no]

+  --enable-cuvid           enable CUVID support [autodetect]

   --enable-libmfx          enable HW acceleration through libmfx

   --enable-mmal            enable decoding via MMAL [no]

   --enable-nvenc           enable NVIDIA NVENC support [no]

@@ -1567,6 +1568,7 @@ FEATURE_LIST="

 HW_CODECS_LIST="

     cuda

+    cuvid

     libmfx

     mmal

     nvenc

@@ -2522,6 +2524,7 @@ audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -frame

 # hardware accelerators

 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"

+cuvid_deps="cuda"

 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"

 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"

 vaapi_deps="va_va_h"

@@ -2539,6 +2542,7 @@ h263_vaapi_hwaccel_select="h263_decoder"

 h263_videotoolbox_hwaccel_deps="videotoolbox"

 h263_videotoolbox_hwaccel_select="h263_decoder"

 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"

+h264_cuvid_hwaccel_deps="cuda cuvid CUVIDH264PICPARAMS"

 h264_d3d11va_hwaccel_deps="d3d11va"

 h264_d3d11va_hwaccel_select="h264_decoder"

 h264_dxva2_hwaccel_deps="dxva2"

@@ -2564,6 +2568,7 @@ h264_vdpau_hwaccel_deps="vdpau"

 h264_vdpau_hwaccel_select="h264_decoder"

 h264_videotoolbox_hwaccel_deps="videotoolbox"

 h264_videotoolbox_hwaccel_select="h264_decoder"

+hevc_cuvid_hwaccel_deps="cuda cuvid CUVIDHEVCPICPARAMS"

 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"

 hevc_d3d11va_hwaccel_select="hevc_decoder"

 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"

@@ -2618,6 +2623,7 @@ mpeg4_videotoolbox_hwaccel_deps="videotoolbox"

 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"

 msmpeg4_crystalhd_decoder_select="crystalhd"

 vc1_crystalhd_decoder_select="crystalhd"

+vc1_cuvid_hwaccel_deps="cuda cuvid CUVIDVC1PICPARAMS"

 vc1_d3d11va_hwaccel_deps="d3d11va"

 vc1_d3d11va_hwaccel_select="vc1_decoder"

 vc1_dxva2_hwaccel_deps="dxva2"

@@ -2633,6 +2639,8 @@ vc1_vdpau_decoder_deps="vdpau"

 vc1_vdpau_decoder_select="vc1_decoder"

 vc1_vdpau_hwaccel_deps="vdpau"

 vc1_vdpau_hwaccel_select="vc1_decoder"

+vp8_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"

+vp9_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"

 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"

 vp9_d3d11va_hwaccel_select="vp9_decoder"

 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"

@@ -2657,6 +2665,8 @@ hwupload_cuda_filter_deps="cuda"

 scale_npp_filter_deps="cuda libnpp"

 nvenc_encoder_deps="nvenc"

+h264_cuvid_decoder_deps="cuda cuvid CUVIDH264PICPARAMS"

+h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"

 h264_qsv_decoder_deps="libmfx"

 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"

 h264_qsv_encoder_deps="libmfx"

@@ -2664,6 +2674,8 @@ h264_qsv_encoder_select="qsvenc"

 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"

 h264_vaapi_encoder_select="vaapi_encode golomb"

+hevc_cuvid_decoder_deps="cuda cuvid CUVIDHEVCPICPARAMS"

+hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"

 hevc_qsv_decoder_deps="libmfx"

 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"

 hevc_qsv_encoder_deps="libmfx"

@@ -2677,6 +2689,13 @@ mpeg2_qsv_encoder_select="qsvenc"

 nvenc_h264_encoder_deps="nvenc"

 nvenc_hevc_encoder_deps="nvenc"

+vc1_cuvid_decoder_deps="cuda cuvid CUVIDVC1PICPARAMS"

+vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"

+vp8_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"

+vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"

+vp9_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"

+vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"

+

 # parsers

 h264_parser_select="h264_decoder"

 hevc_parser_select="golomb"

@@ -5002,6 +5021,7 @@ die_license_disabled gpl libxvid

 die_license_disabled gpl x11grab

 die_license_disabled nonfree cuda

+die_license_disabled nonfree cuvid

 die_license_disabled nonfree libfaac

 die_license_disabled nonfree libnpp

 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac

@@ -5509,6 +5529,11 @@ check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"

 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"

+check_type "cuviddec.h" "CUVIDH264PICPARAMS"

+check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"

+check_type "cuviddec.h" "CUVIDVC1PICPARAMS"

+check_type "cuviddec.h" "CUVIDVP9PICPARAMS"

+

 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt

 if ! disabled w32threads && ! enabled pthreads; then

@@ -5572,6 +5597,11 @@ for func in $COMPLEX_FUNCS; do

     eval check_complexfunc $func \${${func}_args:-1}

 done

+# Enable CUVID by default if CUDA is enabled

+if enabled cuda && ! disabled cuvid; then

+    enable cuvid

+fi

+

 # these are off by default, so fail if requested and not available

 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }

 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||

@@ -5581,6 +5611,10 @@ enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||

                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }

 enabled cuda              && { check_lib cuda.h cuInit -lcuda ||

                                die "ERROR: CUDA not found"; }

+enabled cuvid             && { check_lib cuviddec.h cuvidCreateDecoder -lnvcuvid ||

+                               die "ERROR: CUVID not found"; } &&

+                             { enabled cuda ||

+                               die "ERROR: CUVID requires CUDA"; }

 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint

 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }

 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }

@@ -768,12 +768,14 @@ OBJS-$(CONFIG_QSV)                        += qsv.o

 OBJS-$(CONFIG_QSVDEC)                     += qsvdec.o

 OBJS-$(CONFIG_QSVENC)                     += qsvenc.o

+OBJS-$(CONFIG_H264_CUVID_DECODER)         += cuvid.o

 OBJS-$(CONFIG_H264_MMAL_DECODER)          += mmaldec.o

 OBJS-$(CONFIG_H264_VDA_DECODER)           += vda_h264_dec.o

 OBJS-$(CONFIG_H264_OMX_ENCODER)           += omx.o

 OBJS-$(CONFIG_H264_QSV_DECODER)           += qsvdec_h2645.o

 OBJS-$(CONFIG_H264_QSV_ENCODER)           += qsvenc_h264.o

 OBJS-$(CONFIG_H264_VAAPI_ENCODER)         += vaapi_encode_h264.o vaapi_encode_h26x.o

+OBJS-$(CONFIG_HEVC_CUVID_DECODER)         += cuvid.o

 OBJS-$(CONFIG_HEVC_QSV_DECODER)           += qsvdec_h2645.o

 OBJS-$(CONFIG_HEVC_QSV_ENCODER)           += qsvenc_hevc.o hevc_ps_enc.o h2645_parse.o

 OBJS-$(CONFIG_HEVC_VAAPI_ENCODER)         += vaapi_encode_h265.o vaapi_encode_h26x.o

@@ -784,6 +786,9 @@ OBJS-$(CONFIG_MPEG4_OMX_ENCODER)          += omx.o

 OBJS-$(CONFIG_NVENC_ENCODER)              += nvenc_h264.o

 OBJS-$(CONFIG_NVENC_H264_ENCODER)         += nvenc_h264.o

 OBJS-$(CONFIG_NVENC_HEVC_ENCODER)         += nvenc_hevc.o

+OBJS-$(CONFIG_VC1_CUVID_DECODER)          += cuvid.o

+OBJS-$(CONFIG_VP8_CUVID_DECODER)          += cuvid.o

+OBJS-$(CONFIG_VP9_CUVID_DECODER)          += cuvid.o

 # libavformat dependencies

 OBJS-$(CONFIG_ISO_MEDIA)               += mpeg4audio.o mpegaudiodata.o

@@ -69,6 +69,7 @@ void avcodec_register_all(void)

     /* hardware accelerators */

     REGISTER_HWACCEL(H263_VAAPI,        h263_vaapi);

     REGISTER_HWACCEL(H263_VIDEOTOOLBOX, h263_videotoolbox);

+    REGISTER_HWACCEL(H264_CUVID,        h264_cuvid);

     REGISTER_HWACCEL(H264_D3D11VA,      h264_d3d11va);

     REGISTER_HWACCEL(H264_DXVA2,        h264_dxva2);

     REGISTER_HWACCEL(H264_MMAL,         h264_mmal);

@@ -78,6 +79,7 @@ void avcodec_register_all(void)

     REGISTER_HWACCEL(H264_VDA_OLD,      h264_vda_old);

     REGISTER_HWACCEL(H264_VDPAU,        h264_vdpau);

     REGISTER_HWACCEL(H264_VIDEOTOOLBOX, h264_videotoolbox);

+    REGISTER_HWACCEL(HEVC_CUVID,        hevc_cuvid);

     REGISTER_HWACCEL(HEVC_D3D11VA,      hevc_d3d11va);

     REGISTER_HWACCEL(HEVC_DXVA2,        hevc_dxva2);

     REGISTER_HWACCEL(HEVC_QSV,          hevc_qsv);

@@ -98,12 +100,15 @@ void avcodec_register_all(void)

     REGISTER_HWACCEL(MPEG4_VAAPI,       mpeg4_vaapi);

     REGISTER_HWACCEL(MPEG4_VDPAU,       mpeg4_vdpau);

     REGISTER_HWACCEL(MPEG4_VIDEOTOOLBOX, mpeg4_videotoolbox);

+    REGISTER_HWACCEL(VC1_CUVID,         vc1_cuvid);

     REGISTER_HWACCEL(VC1_D3D11VA,       vc1_d3d11va);

     REGISTER_HWACCEL(VC1_DXVA2,         vc1_dxva2);

     REGISTER_HWACCEL(VC1_VAAPI,         vc1_vaapi);

     REGISTER_HWACCEL(VC1_VDPAU,         vc1_vdpau);

     REGISTER_HWACCEL(VC1_MMAL,          vc1_mmal);

     REGISTER_HWACCEL(VC1_QSV,           vc1_qsv);

+    REGISTER_HWACCEL(VP8_CUVID,         vp8_cuvid);

+    REGISTER_HWACCEL(VP9_CUVID,         vp9_cuvid);

     REGISTER_HWACCEL(VP9_D3D11VA,       vp9_d3d11va);

     REGISTER_HWACCEL(VP9_DXVA2,         vp9_dxva2);

     REGISTER_HWACCEL(VP9_VAAPI,         vp9_vaapi);

@@ -618,6 +623,7 @@ void avcodec_register_all(void)

     /* external libraries, that shouldn't be used by default if one of the

      * above is available */

     REGISTER_ENCODER(LIBOPENH264,       libopenh264);

+    REGISTER_DECODER(H264_CUVID,        h264_cuvid);

     REGISTER_ENCODER(H264_QSV,          h264_qsv);

     REGISTER_ENCODER(H264_VAAPI,        h264_vaapi);

     REGISTER_ENCODER(H264_VIDEOTOOLBOX, h264_videotoolbox);

@@ -625,11 +631,15 @@ void avcodec_register_all(void)

     REGISTER_ENCODER(H264_OMX,          h264_omx);

     REGISTER_ENCODER(NVENC_H264,        nvenc_h264);

     REGISTER_ENCODER(NVENC_HEVC,        nvenc_hevc);

+    REGISTER_DECODER(HEVC_CUVID,        hevc_cuvid);

     REGISTER_ENCODER(HEVC_QSV,          hevc_qsv);

     REGISTER_ENCODER(HEVC_VAAPI,        hevc_vaapi);

     REGISTER_ENCODER(LIBKVAZAAR,        libkvazaar);

     REGISTER_ENCODER(MJPEG_VAAPI,       mjpeg_vaapi);

     REGISTER_ENCODER(MPEG2_QSV,         mpeg2_qsv);

+    REGISTER_DECODER(VC1_CUVID,         vc1_cuvid);

+    REGISTER_DECODER(VP8_CUVID,         vp8_cuvid);

+    REGISTER_DECODER(VP9_CUVID,         vp9_cuvid);

     /* parsers */

     REGISTER_PARSER(AAC,                aac);

new file mode 100644

@@ -0,0 +1,698 @@

+/*

+ * Nvidia CUVID decoder

+ * Copyright (c) 2016 Timo Rothenpieler <timo@rothenpieler.org>

+ *

+ * This file is part of FFmpeg.

+ *

+ * FFmpeg 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.

+ *

+ * FFmpeg 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 FFmpeg; if not, write to the Free Software

+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

+ */

+

+#include "libavutil/buffer.h"

+#include "libavutil/mathematics.h"

+#include "libavutil/hwcontext.h"

+#include "libavutil/hwcontext_cuda.h"

+#include "libavutil/fifo.h"

+#include "libavutil/log.h"

+

+#include "avcodec.h"

+#include "internal.h"

+

+#include <nvcuvid.h>

+

+#define MAX_FRAME_COUNT 20

+

+typedef struct CuvidContext

+{

+    CUvideodecoder cudecoder;

+    CUvideoparser cuparser;

+

+    AVBufferRef *hwdevice;

+    AVBufferRef *hwframe;

+

+    AVBSFContext *bsf;

+

+    AVFifoBuffer *frame_queue;

+

+    int internal_error;

+

+    cudaVideoCodec codec_type;

+    cudaVideoChromaFormat chroma_format;

+} CuvidContext;

+

+static int check_cu(AVCodecContext *avctx, CUresult err, const char *func)

+{

+    const char *err_name;

+    const char *err_string;

+

+    av_log(avctx, AV_LOG_TRACE, "Calling %s\n", func);

+

+    if (err == CUDA_SUCCESS)

+        return 0;

+

+    cuGetErrorName(err, &err_name);

+    cuGetErrorString(err, &err_string);

+

+    av_log(avctx, AV_LOG_ERROR, "%s failed", func);

+    if (err_name && err_string)

+        av_log(avctx, AV_LOG_ERROR, " -> %s: %s", err_name, err_string);

+    av_log(avctx, AV_LOG_ERROR, "\n");

+

+    return AVERROR_EXTERNAL;

+}

+

+#define CHECK_CU(x) check_cu(avctx, (x), #x)

+

+static int CUDAAPI cuvid_handle_video_sequence(void *opaque, CUVIDEOFORMAT* format)

+{

+    AVCodecContext *avctx = opaque;

+    CuvidContext *ctx = avctx->priv_data;

+    AVHWFramesContext *hwframe_ctx = (AVHWFramesContext*)ctx->hwframe->data;

+    CUVIDDECODECREATEINFO cuinfo;

+

+    av_log(avctx, AV_LOG_TRACE, "pfnSequenceCallback\n");

+

+    ctx->internal_error = 0;

+

+    avctx->width = format->display_area.right;

+    avctx->height = format->display_area.bottom;

+

+    ff_set_sar(avctx, av_div_q(

+        (AVRational){ format->display_aspect_ratio.x, format->display_aspect_ratio.y },

+        (AVRational){ avctx->width, avctx->height }));

+

+    if (!format->progressive_sequence)

+        avctx->flags |= AV_CODEC_FLAG_INTERLACED_DCT;

+    else

+        avctx->flags &= ~AV_CODEC_FLAG_INTERLACED_DCT;

+

+    if (format->video_signal_description.video_full_range_flag)

+        avctx->color_range = AVCOL_RANGE_JPEG;

+    else

+        avctx->color_range = AVCOL_RANGE_MPEG;

+

+    avctx->color_primaries = format->video_signal_description.color_primaries;

+    avctx->color_trc = format->video_signal_description.transfer_characteristics;

+    avctx->colorspace = format->video_signal_description.matrix_coefficients;

+

+    if (format->bitrate)

+        avctx->bit_rate = format->bitrate;

+

+    if (format->frame_rate.numerator && format->frame_rate.denominator) {

+        avctx->framerate.num = format->frame_rate.numerator;

+        avctx->framerate.den = format->frame_rate.denominator;

+    }

+

+    if (ctx->cudecoder

+            && avctx->coded_width == format->coded_width

+            && avctx->coded_height == format->coded_height

+            && ctx->chroma_format == format->chroma_format

+            && ctx->codec_type == format->codec)

+        return 1;

+

+    if (ctx->cudecoder) {

+        av_log(avctx, AV_LOG_ERROR, "re-initializing decoder is not supported\n");

+        ctx->internal_error = AVERROR(EINVAL);

+        return 0;

+    }

+

+    if (hwframe_ctx->pool) {

+        av_log(avctx, AV_LOG_ERROR, "AVHWFramesContext is already initialized\n");

+        ctx->internal_error = AVERROR(EINVAL);

+        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;

+    cuinfo.OutputFormat = cudaVideoSurfaceFormat_NV12;

+

+    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 = MAX_FRAME_COUNT;

+    cuinfo.ulNumOutputSurfaces = 1;

+    cuinfo.ulCreationFlags = cudaVideoCreate_PreferCUVID;

+

+    cuinfo.DeinterlaceMode = cudaVideoDeinterlaceMode_Weave;

+

+    ctx->internal_error = CHECK_CU(cuvidCreateDecoder(&ctx->cudecoder, &cuinfo));

+    if (ctx->internal_error < 0)

+        return 0;

+

+    hwframe_ctx->format = AV_PIX_FMT_CUDA;

+    hwframe_ctx->sw_format = AV_PIX_FMT_NV12;

+    hwframe_ctx->width = FFALIGN(avctx->coded_width, 32);

+    hwframe_ctx->height = FFALIGN(avctx->coded_height, 32);

+

+    if ((ctx->internal_error = av_hwframe_ctx_init(ctx->hwframe)) < 0) {

+        av_log(avctx, AV_LOG_ERROR, "av_hwframe_ctx_init failed\n");

+        return 0;

+    }

+

+    return 1;

+}

+

+static int CUDAAPI cuvid_handle_picture_decode(void *opaque, CUVIDPICPARAMS* picparams)

+{

+    AVCodecContext *avctx = opaque;

+    CuvidContext *ctx = avctx->priv_data;

+

+    av_log(avctx, AV_LOG_TRACE, "pfnDecodePicture\n");

+

+    ctx->internal_error = CHECK_CU(cuvidDecodePicture(ctx->cudecoder, picparams));

+    if (ctx->internal_error < 0)

+        return 0;

+

+    return 1;

+}

+

+static int CUDAAPI cuvid_handle_picture_display(void *opaque, CUVIDPARSERDISPINFO* dispinfo)

+{

+    AVCodecContext *avctx = opaque;

+    CuvidContext *ctx = avctx->priv_data;

+

+    av_log(avctx, AV_LOG_TRACE, "pfnDisplayPicture\n");

+

+    ctx->internal_error = 0;

+

+    av_fifo_generic_write(ctx->frame_queue, dispinfo, sizeof(CUVIDPARSERDISPINFO), NULL);

+

+    return 1;

+}

+

+static int cuvid_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)

+{

+    CuvidContext *ctx = avctx->priv_data;

+    AVHWDeviceContext *device_ctx = (AVHWDeviceContext*)ctx->hwdevice->data;

+    AVCUDADeviceContext *device_hwctx = device_ctx->hwctx;

+    CUcontext dummy, cuda_ctx = device_hwctx->cuda_ctx;

+    AVFrame *frame = data;

+    CUVIDSOURCEDATAPACKET cupkt;

+    AVPacket filter_packet = { 0 };

+    AVPacket filtered_packet = { 0 };

+    CUdeviceptr mapped_frame = 0;

+    int ret = 0, eret = 0;

+

+    if (ctx->bsf && avpkt->size) {

+        if ((ret = av_packet_ref(&filter_packet, avpkt)) < 0) {

+            av_log(avctx, AV_LOG_ERROR, "av_packet_ref failed\n");

+            return ret;

+        }

+

+        if ((ret = av_bsf_send_packet(ctx->bsf, &filter_packet)) < 0) {

+            av_log(avctx, AV_LOG_ERROR, "av_bsf_send_packet failed\n");

+            av_packet_unref(&filter_packet);

+            return ret;

+        }

+

+        if ((ret = av_bsf_receive_packet(ctx->bsf, &filtered_packet)) < 0) {

+            av_log(avctx, AV_LOG_ERROR, "av_bsf_receive_packet failed\n");

+            return ret;

+        }

+

+        avpkt = &filtered_packet;

+    }

+

+    ret = CHECK_CU(cuCtxPushCurrent(cuda_ctx));

+    if (ret < 0) {

+        av_packet_unref(&filtered_packet);

+        return ret;

+    }

+

+    memset(&cupkt, 0, sizeof(cupkt));

+

+    if (avpkt->size) {

+        cupkt.payload_size = avpkt->size;

+        cupkt.payload = avpkt->data;

+

+        if (avpkt->pts != AV_NOPTS_VALUE) {

+            cupkt.flags = CUVID_PKT_TIMESTAMP;

+            cupkt.timestamp = av_rescale_q(avpkt->pts, avctx->time_base, (AVRational){1, 10000000});

+        }

+    } else {

+        cupkt.flags = CUVID_PKT_ENDOFSTREAM;

+    }

+

+    ret = CHECK_CU(cuvidParseVideoData(ctx->cuparser, &cupkt));

+

+    av_packet_unref(&filtered_packet);

+

+    if (ret < 0) {

+        if (ctx->internal_error)

+            ret = ctx->internal_error;

+        goto error;

+    }

+

+    if (av_fifo_size(ctx->frame_queue)) {

+        CUVIDPARSERDISPINFO dispinfo;

+        CUVIDPROCPARAMS params;

+        unsigned int pitch = 0;

+        int offset = 0;

+        int i;

+

+        av_fifo_generic_read(ctx->frame_queue, &dispinfo, sizeof(CUVIDPARSERDISPINFO), NULL);

+

+        memset(&params, 0, sizeof(params));

+        params.progressive_frame = dispinfo.progressive_frame;

+        params.second_field = 0;

+        params.top_field_first = dispinfo.top_field_first;

+

+        ret = CHECK_CU(cuvidMapVideoFrame(ctx->cudecoder, dispinfo.picture_index, &mapped_frame, &pitch, &params));

+        if (ret < 0)

+            goto error;

+

+        if (avctx->pix_fmt == AV_PIX_FMT_CUDA) {

+            ret = av_hwframe_get_buffer(ctx->hwframe, frame, 0);

+            if (ret < 0) {

+                av_log(avctx, AV_LOG_ERROR, "av_hwframe_get_buffer failed\n");

+                goto error;

+            }

+

+            ret = ff_decode_frame_props(avctx, frame);

+            if (ret < 0) {

+                av_log(avctx, AV_LOG_ERROR, "ff_decode_frame_props failed\n");

+                goto error;

+            }

+

+            for (i = 0; i < 2; i++) {

+                CUDA_MEMCPY2D cpy = {

+                    .srcMemoryType = CU_MEMORYTYPE_DEVICE,

+                    .dstMemoryType = CU_MEMORYTYPE_DEVICE,

+                    .srcDevice     = mapped_frame,

+                    .dstDevice     = (CUdeviceptr)frame->data[i],

+                    .srcPitch      = pitch,

+                    .dstPitch      = frame->linesize[i],

+                    .srcY          = offset,

+                    .WidthInBytes  = FFMIN(pitch, frame->linesize[i]),

+                    .Height        = avctx->coded_height >> (i ? 1 : 0),

+                };

+

+                ret = CHECK_CU(cuMemcpy2D(&cpy));

+                if (ret < 0)

+                    goto error;

+

+                offset += avctx->coded_height;

+            }

+        } else if (avctx->pix_fmt == AV_PIX_FMT_NV12) {

+            AVFrame *tmp_frame = av_frame_alloc();

+            if (!tmp_frame) {

+                av_log(avctx, AV_LOG_ERROR, "av_frame_alloc failed\n");

+                ret = AVERROR(ENOMEM);

+                goto error;

+            }

+

+            tmp_frame->format        = AV_PIX_FMT_CUDA;

+            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->linesize[1]   = pitch;

+            tmp_frame->width         = avctx->width;

+            tmp_frame->height        = avctx->height;

+

+            ret = ff_get_buffer(avctx, frame, 0);

+            if (ret < 0) {

+                av_log(avctx, AV_LOG_ERROR, "ff_get_buffer failed\n");

+                av_frame_free(&tmp_frame);

+                goto error;

+            }

+

+            ret = av_hwframe_transfer_data(frame, tmp_frame, 0);

+            if (ret) {

+                av_log(avctx, AV_LOG_ERROR, "av_hwframe_transfer_data failed\n");

+                av_frame_free(&tmp_frame);

+                goto error;

+            }

+

+            av_frame_free(&tmp_frame);

+        } else {

+            ret = AVERROR_BUG;

+            goto error;

+        }

+

+        frame->width = avctx->width;

+        frame->height = avctx->height;

+        frame->pts = av_rescale_q(dispinfo.timestamp, (AVRational){1, 10000000}, avctx->time_base);

+

+        /* CUVIDs opaque reordering breaks the internal pkt logic.

+         * So set pkt_pts and clear all the other pkt_ fields.

+         */

+        frame->pkt_pts = frame->pts;

+        av_frame_set_pkt_pos(frame, -1);

+        av_frame_set_pkt_duration(frame, 0);

+        av_frame_set_pkt_size(frame, -1);

+

+        frame->interlaced_frame = !dispinfo.progressive_frame;

+

+        if (!dispinfo.progressive_frame)

+            frame->top_field_first = dispinfo.top_field_first;

+

+        *got_frame = 1;

+    } else {

+        *got_frame = 0;

+    }

+

+error:

+    if (mapped_frame)

+        eret = CHECK_CU(cuvidUnmapVideoFrame(ctx->cudecoder, mapped_frame));

+

+    eret = CHECK_CU(cuCtxPopCurrent(&dummy));

+

+    if (eret < 0)

+        return eret;

+    else

+        return ret;

+}

+

+static av_cold int cuvid_decode_end(AVCodecContext *avctx)

+{

+    CuvidContext *ctx = avctx->priv_data;

+

+    av_fifo_freep(&ctx->frame_queue);

+

+    if (ctx->bsf)

+        av_bsf_free(&ctx->bsf);

+

+    if (ctx->cuparser)

+        cuvidDestroyVideoParser(ctx->cuparser);

+

+    if (ctx->cudecoder)

+        cuvidDestroyDecoder(ctx->cudecoder);

+

+    av_buffer_unref(&ctx->hwframe);

+    av_buffer_unref(&ctx->hwdevice);

+

+    return 0;

+}

+

+static void cuvid_ctx_free(AVHWDeviceContext *ctx)

+{

+    AVCUDADeviceContext *hwctx = ctx->hwctx;

+    cuCtxDestroy(hwctx->cuda_ctx);

+}

+

+static int cuvid_test_dummy_decoder(AVCodecContext *avctx, CUVIDPARSERPARAMS *cuparseinfo)

+{

+    CUVIDDECODECREATEINFO cuinfo;

+    CUvideodecoder cudec = 0;

+    int ret = 0;

+

+    memset(&cuinfo, 0, sizeof(cuinfo));

+

+    cuinfo.CodecType = cuparseinfo->CodecType;

+    cuinfo.ChromaFormat = cudaVideoChromaFormat_420;

+    cuinfo.OutputFormat = cudaVideoSurfaceFormat_NV12;

+

+    cuinfo.ulWidth = 1280;

+    cuinfo.ulHeight = 720;

+    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 = MAX_FRAME_COUNT;

+    cuinfo.ulNumOutputSurfaces = 1;

+    cuinfo.ulCreationFlags = cudaVideoCreate_PreferCUVID;

+

+    cuinfo.DeinterlaceMode = cudaVideoDeinterlaceMode_Weave;

+

+    ret = CHECK_CU(cuvidCreateDecoder(&cudec, &cuinfo));

+    if (ret < 0)

+        return ret;

+

+    ret = CHECK_CU(cuvidDestroyDecoder(cudec));

+    if (ret < 0)

+        return ret;

+

+    return 0;

+}

+

+static av_cold int cuvid_decode_init(AVCodecContext *avctx)

+{

+    CuvidContext *ctx = avctx->priv_data;

+    AVCUDADeviceContext *device_hwctx;

+    AVHWDeviceContext *device_ctx;

+    AVHWFramesContext *hwframe_ctx;

+    CUVIDPARSERPARAMS cuparseinfo;

+    CUVIDEOFORMATEX cuparse_ext;

+    CUVIDSOURCEDATAPACKET seq_pkt;

+    CUdevice device;

+    CUcontext cuda_ctx = NULL;

+    CUcontext dummy;

+    const AVBitStreamFilter *bsf;

+    int ret = 0;

+

+    enum AVPixelFormat pix_fmts[3] = { AV_PIX_FMT_CUDA,

+                                       AV_PIX_FMT_NV12,

+                                       AV_PIX_FMT_NONE };

+

+    ret = ff_get_format(avctx, pix_fmts);

+    if (ret < 0) {

+        av_log(avctx, AV_LOG_ERROR, "ff_get_format failed: %d\n", ret);

+        return ret;

+    }

+

+    ctx->frame_queue = av_fifo_alloc(MAX_FRAME_COUNT * sizeof(CUVIDPARSERDISPINFO));

+    if (!ctx->frame_queue) {

+        ret = AVERROR(ENOMEM);

+        goto error;

+    }

+

+    avctx->pix_fmt = ret;

+

+    if (avctx->hw_frames_ctx) {

+        ctx->hwframe = av_buffer_ref(avctx->hw_frames_ctx);

+        if (!ctx->hwframe) {

+            ret = AVERROR(ENOMEM);

+            goto error;

+        }

+

+        hwframe_ctx = (AVHWFramesContext*)ctx->hwframe->data;

+

+        ctx->hwdevice = av_buffer_ref(hwframe_ctx->device_ref);

+        if (!ctx->hwdevice) {

+            ret = AVERROR(ENOMEM);

+            goto error;

+        }

+

+        device_ctx = hwframe_ctx->device_ctx;

+        device_hwctx = device_ctx->hwctx;

+        cuda_ctx = device_hwctx->cuda_ctx;

+    } else {

+        ctx->hwdevice = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_CUDA);

+        if (!ctx->hwdevice) {

+            av_log(avctx, AV_LOG_ERROR, "Error allocating hwdevice\n");

+            ret = AVERROR(ENOMEM);

+            goto error;

+        }

+

+        ret = CHECK_CU(cuInit(0));

+        if (ret < 0)

+            goto error;

+

+        ret = CHECK_CU(cuDeviceGet(&device, 0));

+        if (ret < 0)

+            goto error;

+

+        ret = CHECK_CU(cuCtxCreate(&cuda_ctx, CU_CTX_SCHED_BLOCKING_SYNC, device));

+        if (ret < 0)

+            goto error;

+

+        device_ctx = (AVHWDeviceContext*)ctx->hwdevice->data;

+        device_ctx->free = cuvid_ctx_free;

+

+        device_hwctx = device_ctx->hwctx;

+        device_hwctx->cuda_ctx = cuda_ctx;

+

+        ret = CHECK_CU(cuCtxPopCurrent(&dummy));

+        if (ret < 0)

+            goto error;

+

+        ret = av_hwdevice_ctx_init(ctx->hwdevice);

+        if (ret < 0) {

+            av_log(avctx, AV_LOG_ERROR, "av_hwdevice_ctx_init failed\n");

+            goto error;

+        }

+

+        ctx->hwframe = av_hwframe_ctx_alloc(ctx->hwdevice);

+        if (!ctx->hwframe) {

+            av_log(avctx, AV_LOG_ERROR, "av_hwframe_ctx_alloc failed\n");

+            ret = AVERROR(ENOMEM);

+            goto error;

+        }

+    }

+

+    memset(&cuparseinfo, 0, sizeof(cuparseinfo));

+    memset(&cuparse_ext, 0, sizeof(cuparse_ext));

+    memset(&seq_pkt, 0, sizeof(seq_pkt));

+

+    cuparseinfo.pExtVideoInfo = &cuparse_ext;

+

+    switch (avctx->codec->id) {

+#if CONFIG_H264_CUVID_DECODER

+    case AV_CODEC_ID_H264:

+        cuparseinfo.CodecType = cudaVideoCodec_H264;

+        break;

+#endif

+#if CONFIG_HEVC_CUVID_DECODER

+    case AV_CODEC_ID_HEVC:

+        cuparseinfo.CodecType = cudaVideoCodec_HEVC;

+        break;

+#endif

+#if CONFIG_VP8_CUVID_DECODER

+    case AV_CODEC_ID_VP8:

+        cuparseinfo.CodecType = cudaVideoCodec_VP8;

+        break;

+#endif

+#if CONFIG_VP9_CUVID_DECODER

+    case AV_CODEC_ID_VP9:

+        cuparseinfo.CodecType = cudaVideoCodec_VP9;

+        break;

+#endif

+#if CONFIG_VC1_CUVID_DECODER

+    case AV_CODEC_ID_VC1:

+        cuparseinfo.CodecType = cudaVideoCodec_VC1;

+        break;

+#endif

+    default:

+        av_log(avctx, AV_LOG_ERROR, "Invalid CUVID codec!\n");

+        return AVERROR_BUG;

+    }

+

+    if (avctx->codec->id == AV_CODEC_ID_H264 || avctx->codec->id == AV_CODEC_ID_HEVC) {

+        if (avctx->codec->id == AV_CODEC_ID_H264)

+            bsf = av_bsf_get_by_name("h264_mp4toannexb");

+        else

+            bsf = av_bsf_get_by_name("hevc_mp4toannexb");

+

+        if (!bsf) {

+            ret = AVERROR_BSF_NOT_FOUND;

+            goto error;

+        }

+        if (ret = av_bsf_alloc(bsf, &ctx->bsf)) {

+            goto error;

+        }

+        if (((ret = avcodec_parameters_from_context(ctx->bsf->par_in, avctx)) < 0) || ((ret = av_bsf_init(ctx->bsf)) < 0)) {

+            av_bsf_free(&ctx->bsf);

+            goto error;

+        }

+

+        cuparse_ext.format.seqhdr_data_length = ctx->bsf->par_out->extradata_size;

+        memcpy(cuparse_ext.raw_seqhdr_data,

+               ctx->bsf->par_out->extradata,

+               FFMIN(sizeof(cuparse_ext.raw_seqhdr_data), ctx->bsf->par_out->extradata_size));

+    } else if (avctx->extradata_size > 0) {

+        cuparse_ext.format.seqhdr_data_length = avctx->extradata_size;

+        memcpy(cuparse_ext.raw_seqhdr_data,

+               avctx->extradata,

+               FFMIN(sizeof(cuparse_ext.raw_seqhdr_data), avctx->extradata_size));

+    }

+

+    cuparseinfo.ulMaxNumDecodeSurfaces = MAX_FRAME_COUNT;

+    cuparseinfo.ulMaxDisplayDelay = 4;

+    cuparseinfo.pUserData = avctx;

+    cuparseinfo.pfnSequenceCallback = cuvid_handle_video_sequence;

+    cuparseinfo.pfnDecodePicture = cuvid_handle_picture_decode;

+    cuparseinfo.pfnDisplayPicture = cuvid_handle_picture_display;

+

+    ret = CHECK_CU(cuCtxPushCurrent(cuda_ctx));

+    if (ret < 0)

+        goto error;

+

+    ret = cuvid_test_dummy_decoder(avctx, &cuparseinfo);

+    if (ret < 0)

+        goto error;

+

+    ret = CHECK_CU(cuvidCreateVideoParser(&ctx->cuparser, &cuparseinfo));

+    if (ret < 0)

+        goto error;

+

+    seq_pkt.payload = cuparse_ext.raw_seqhdr_data;

+    seq_pkt.payload_size = cuparse_ext.format.seqhdr_data_length;

+

+    if (seq_pkt.payload && seq_pkt.payload_size) {

+        ret = CHECK_CU(cuvidParseVideoData(ctx->cuparser, &seq_pkt));

+        if (ret < 0)

+            goto error;

+    }

+

+    ret = CHECK_CU(cuCtxPopCurrent(&dummy));

+    if (ret < 0)

+        goto error;

+

+    return 0;