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ffmpeg/libavcodec/cuvid.c
Philip Langdale 86910b15c9 cuvid: Implement flush to support seeking in media players 
Right now, if we attempt to use cuvid in a media player and then
try to seek, the decoder will happily pass out whatever frames were
already in flight before the seek.

There is both the output queue in our code and some number of frames
within the cuvid decoder that need to be accounted for.

cuvid doesn't support flush, so our only choice is to do a brute-force
re-creation of the decoder, which also implies re-creating the parser,
but this is fine.

The only subtlty is that there is sanity check code in decoder
initialisation that wants to make sure the HWContextFrame hasn't already
been initialised. This is a fair check to do at the beginning but not
after a flush, so it has to be made conditional.

Signed-off-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
2016-09-06 21:52:05 +02:00

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/*
* 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;
int ever_flushed;
cudaVideoCodec codec_type;
cudaVideoChromaFormat chroma_format;
CUVIDPARSERPARAMS cuparseinfo;
CUVIDEOFORMATEX cuparse_ext;
} 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 && !ctx->ever_flushed) {
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;
if (!hwframe_ctx->pool) {
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;
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(&ctx->cuparseinfo, 0, sizeof(ctx->cuparseinfo));
memset(&ctx->cuparse_ext, 0, sizeof(ctx->cuparse_ext));
memset(&seq_pkt, 0, sizeof(seq_pkt));
ctx->cuparseinfo.pExtVideoInfo = &ctx->cuparse_ext;
switch (avctx->codec->id) {
#if CONFIG_H263_CUVID_DECODER
case AV_CODEC_ID_H263:
ctx->cuparseinfo.CodecType = cudaVideoCodec_MPEG4;
break;
#endif
#if CONFIG_H264_CUVID_DECODER
case AV_CODEC_ID_H264:
ctx->cuparseinfo.CodecType = cudaVideoCodec_H264;
break;
#endif
#if CONFIG_HEVC_CUVID_DECODER
case AV_CODEC_ID_HEVC:
ctx->cuparseinfo.CodecType = cudaVideoCodec_HEVC;
break;
#endif
#if CONFIG_MJPEG_CUVID_DECODER
case AV_CODEC_ID_MJPEG:
ctx->cuparseinfo.CodecType = cudaVideoCodec_JPEG;
break;
#endif
#if CONFIG_MPEG1_CUVID_DECODER
case AV_CODEC_ID_MPEG1VIDEO:
ctx->cuparseinfo.CodecType = cudaVideoCodec_MPEG1;
break;
#endif
#if CONFIG_MPEG2_CUVID_DECODER
case AV_CODEC_ID_MPEG2VIDEO:
ctx->cuparseinfo.CodecType = cudaVideoCodec_MPEG2;
break;
#endif
#if CONFIG_MPEG4_CUVID_DECODER
case AV_CODEC_ID_MPEG4:
ctx->cuparseinfo.CodecType = cudaVideoCodec_MPEG4;
break;
#endif
#if CONFIG_VP8_CUVID_DECODER
case AV_CODEC_ID_VP8:
ctx->cuparseinfo.CodecType = cudaVideoCodec_VP8;
break;
#endif
#if CONFIG_VP9_CUVID_DECODER
case AV_CODEC_ID_VP9:
ctx->cuparseinfo.CodecType = cudaVideoCodec_VP9;
break;
#endif
#if CONFIG_VC1_CUVID_DECODER
case AV_CODEC_ID_VC1:
ctx->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;
}
ctx->cuparse_ext.format.seqhdr_data_length = ctx->bsf->par_out->extradata_size;
memcpy(ctx->cuparse_ext.raw_seqhdr_data,
ctx->bsf->par_out->extradata,
FFMIN(sizeof(ctx->cuparse_ext.raw_seqhdr_data), ctx->bsf->par_out->extradata_size));
} else if (avctx->extradata_size > 0) {
ctx->cuparse_ext.format.seqhdr_data_length = avctx->extradata_size;
memcpy(ctx->cuparse_ext.raw_seqhdr_data,
avctx->extradata,
FFMIN(sizeof(ctx->cuparse_ext.raw_seqhdr_data), avctx->extradata_size));
}
ctx->cuparseinfo.ulMaxNumDecodeSurfaces = MAX_FRAME_COUNT;
ctx->cuparseinfo.ulMaxDisplayDelay = 4;
ctx->cuparseinfo.pUserData = avctx;
ctx->cuparseinfo.pfnSequenceCallback = cuvid_handle_video_sequence;
ctx->cuparseinfo.pfnDecodePicture = cuvid_handle_picture_decode;
ctx->cuparseinfo.pfnDisplayPicture = cuvid_handle_picture_display;
ret = CHECK_CU(cuCtxPushCurrent(cuda_ctx));
if (ret < 0)
goto error;
ret = cuvid_test_dummy_decoder(avctx, &ctx->cuparseinfo);
if (ret < 0)
goto error;
ret = CHECK_CU(cuvidCreateVideoParser(&ctx->cuparser, &ctx->cuparseinfo));
if (ret < 0)
goto error;
seq_pkt.payload = ctx->cuparse_ext.raw_seqhdr_data;
seq_pkt.payload_size = ctx->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;
ctx->ever_flushed = 0;
return 0;
error:
cuvid_decode_end(avctx);
return ret;
}
static void cuvid_flush(AVCodecContext *avctx)
{
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;
int ret;
ctx->ever_flushed = 1;
ret = CHECK_CU(cuCtxPushCurrent(cuda_ctx));
if (ret < 0)
goto error;
av_fifo_freep(&ctx->frame_queue);
ctx->frame_queue = av_fifo_alloc(MAX_FRAME_COUNT * sizeof(CUVIDPARSERDISPINFO));
if (!ctx->frame_queue) {
av_log(avctx, AV_LOG_ERROR, "Failed to recreate frame queue on flush\n");
return;
}
if (ctx->cudecoder) {
cuvidDestroyDecoder(ctx->cudecoder);
ctx->cudecoder = NULL;
}
if (ctx->cuparser) {
cuvidDestroyVideoParser(ctx->cuparser);
ctx->cuparser = NULL;
}
ret = CHECK_CU(cuvidCreateVideoParser(&ctx->cuparser, &ctx->cuparseinfo));
if (ret < 0)
goto error;
ret = CHECK_CU(cuCtxPopCurrent(&dummy));
if (ret < 0)
goto error;
return;
error:
av_log(avctx, AV_LOG_ERROR, "CUDA reinit on flush failed\n");
}
#define DEFINE_CUVID_CODEC(x, X) \
AVHWAccel ff_##x##_cuvid_hwaccel = { \
.name = #x "_cuvid", \
.type = AVMEDIA_TYPE_VIDEO, \
.id = AV_CODEC_ID_##X, \
.pix_fmt = AV_PIX_FMT_CUDA, \
}; \
AVCodec ff_##x##_cuvid_decoder = { \
.name = #x "_cuvid", \
.long_name = NULL_IF_CONFIG_SMALL("Nvidia CUVID " #X " decoder"), \
.type = AVMEDIA_TYPE_VIDEO, \
.id = AV_CODEC_ID_##X, \
.priv_data_size = sizeof(CuvidContext), \
.init = cuvid_decode_init, \
.close = cuvid_decode_end, \
.decode = cuvid_decode_frame, \
.flush = cuvid_flush, \
.capabilities = AV_CODEC_CAP_DELAY, \
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_CUDA, \
AV_PIX_FMT_NV12, \
AV_PIX_FMT_NONE }, \
};
#if CONFIG_HEVC_CUVID_DECODER
DEFINE_CUVID_CODEC(hevc, HEVC)
#endif
#if CONFIG_H263_CUVID_DECODER
DEFINE_CUVID_CODEC(h263, H263)
#endif
#if CONFIG_H264_CUVID_DECODER
DEFINE_CUVID_CODEC(h264, H264)
#endif
#if CONFIG_MJPEG_CUVID_DECODER
DEFINE_CUVID_CODEC(mjpeg, MJPEG)
#endif
#if CONFIG_MPEG1_CUVID_DECODER
DEFINE_CUVID_CODEC(mpeg1, MPEG1VIDEO)
#endif
#if CONFIG_MPEG2_CUVID_DECODER
DEFINE_CUVID_CODEC(mpeg2, MPEG2VIDEO)
#endif
#if CONFIG_MPEG4_CUVID_DECODER
DEFINE_CUVID_CODEC(mpeg4, MPEG4)
#endif
#if CONFIG_VP8_CUVID_DECODER
DEFINE_CUVID_CODEC(vp8, VP8)
#endif
#if CONFIG_VP9_CUVID_DECODER
DEFINE_CUVID_CODEC(vp9, VP9)
#endif
#if CONFIG_VC1_CUVID_DECODER
DEFINE_CUVID_CODEC(vc1, VC1)
#endif
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