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FFmpeg/libavcodec/cuvid.c
Pavel Koshevoy 9ea2998586 avcodec/cuvid: fail early if GPU can't handle video resolution 
CUVID on GeForce GT 730 and GeForce GTX 1060 does not report any error when
decoding 8K h264 packets. However, it does return an error during
cuvidCreateDecoder call if the indicated video resolution is not
supported.

Given that stream resolution is typically known as a result of probing
it is better to use this information during avcodec_open2 call to fail
immediately, rather than proceeding to decode and never receiving any
frames from the decoder nor receiving any indication of decode failure.

Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
2017-01-23 17:49:35 +01:00

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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 "compat/cuda/dynlink_loader.h"
#include "libavutil/buffer.h"
#include "libavutil/mathematics.h"
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_cuda_internal.h"
#include "libavutil/fifo.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "internal.h"
typedef struct CuvidContext
{
AVClass *avclass;
CUvideodecoder cudecoder;
CUvideoparser cuparser;
char *cu_gpu;
int nb_surfaces;
AVBufferRef *hwdevice;
AVBufferRef *hwframe;
AVBSFContext *bsf;
AVFifoBuffer *frame_queue;
int deint_mode;
int64_t prev_pts;
int internal_error;
int decoder_flushing;
cudaVideoCodec codec_type;
cudaVideoChromaFormat chroma_format;
CUVIDPARSERPARAMS cuparseinfo;
CUVIDEOFORMATEX cuparse_ext;
CudaFunctions *cudl;
CuvidFunctions *cvdl;
} CuvidContext;
typedef struct CuvidParsedFrame
{
CUVIDPARSERDISPINFO dispinfo;
int second_field;
int is_deinterlacing;
} CuvidParsedFrame;
static int check_cu(AVCodecContext *avctx, CUresult err, const char *func)
{
CuvidContext *ctx = avctx->priv_data;
const char *err_name;
const char *err_string;
av_log(avctx, AV_LOG_TRACE, "Calling %s\n", func);
if (err == CUDA_SUCCESS)
return 0;
ctx->cudl->cuGetErrorName(err, &err_name);
ctx->cudl->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;
int surface_fmt;
enum AVPixelFormat pix_fmts[3] = { AV_PIX_FMT_CUDA,
AV_PIX_FMT_NONE, // Will be updated below
AV_PIX_FMT_NONE };
av_log(avctx, AV_LOG_TRACE, "pfnSequenceCallback, progressive_sequence=%d\n", format->progressive_sequence);
ctx->internal_error = 0;
switch (format->bit_depth_luma_minus8) {
case 0: // 8-bit
pix_fmts[1] = AV_PIX_FMT_NV12;
break;
case 2: // 10-bit
pix_fmts[1] = AV_PIX_FMT_P010;
break;
case 4: // 12-bit
pix_fmts[1] = AV_PIX_FMT_P016;
break;
default:
av_log(avctx, AV_LOG_ERROR, "unsupported bit depth: %d\n",
format->bit_depth_luma_minus8 + 8);
ctx->internal_error = AVERROR(EINVAL);
return 0;
}
surface_fmt = ff_get_format(avctx, pix_fmts);
if (surface_fmt < 0) {
av_log(avctx, AV_LOG_ERROR, "ff_get_format failed: %d\n", surface_fmt);
ctx->internal_error = AVERROR(EINVAL);
return 0;
}
av_log(avctx, AV_LOG_VERBOSE, "Formats: Original: %s | HW: %s | SW: %s\n",
av_get_pix_fmt_name(avctx->pix_fmt),
av_get_pix_fmt_name(surface_fmt),
av_get_pix_fmt_name(avctx->sw_pix_fmt));
avctx->pix_fmt = surface_fmt;
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 && ctx->deint_mode == cudaVideoDeinterlaceMode_Weave)
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_TRACE, "Re-initializing decoder\n");
ctx->internal_error = CHECK_CU(ctx->cvdl->cuvidDestroyDecoder(ctx->cudecoder));
if (ctx->internal_error < 0)
return 0;
ctx->cudecoder = NULL;
}
if (hwframe_ctx->pool && (
hwframe_ctx->width < avctx->width ||
hwframe_ctx->height < avctx->height ||
hwframe_ctx->format != AV_PIX_FMT_CUDA ||
hwframe_ctx->sw_format != avctx->sw_pix_fmt)) {
av_log(avctx, AV_LOG_ERROR, "AVHWFramesContext is already initialized with incompatible parameters\n");
ctx->internal_error = AVERROR(EINVAL);
return 0;
}
if (format->chroma_format != cudaVideoChromaFormat_420) {
av_log(avctx, AV_LOG_ERROR, "Chroma formats other than 420 are not supported\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;
switch (avctx->sw_pix_fmt) {
case AV_PIX_FMT_NV12:
cuinfo.OutputFormat = cudaVideoSurfaceFormat_NV12;
break;
case AV_PIX_FMT_P010:
case AV_PIX_FMT_P016:
cuinfo.OutputFormat = cudaVideoSurfaceFormat_P016;
break;
default:
av_log(avctx, AV_LOG_ERROR, "Output formats other than NV12, P010 or P016 are not supported\n");
ctx->internal_error = AVERROR(EINVAL);
return 0;
}
cuinfo.ulWidth = avctx->coded_width;
cuinfo.ulHeight = avctx->coded_height;
cuinfo.ulTargetWidth = cuinfo.ulWidth;
cuinfo.ulTargetHeight = cuinfo.ulHeight;
cuinfo.target_rect.left = 0;
cuinfo.target_rect.top = 0;
cuinfo.target_rect.right = cuinfo.ulWidth;
cuinfo.target_rect.bottom = cuinfo.ulHeight;
cuinfo.ulNumDecodeSurfaces = ctx->nb_surfaces;
cuinfo.ulNumOutputSurfaces = 1;
cuinfo.ulCreationFlags = cudaVideoCreate_PreferCUVID;
cuinfo.bitDepthMinus8 = format->bit_depth_luma_minus8;
if (format->progressive_sequence) {
ctx->deint_mode = cuinfo.DeinterlaceMode = cudaVideoDeinterlaceMode_Weave;
} else {
cuinfo.DeinterlaceMode = ctx->deint_mode;
}
if (ctx->deint_mode != cudaVideoDeinterlaceMode_Weave)
avctx->framerate = av_mul_q(avctx->framerate, (AVRational){2, 1});
ctx->internal_error = CHECK_CU(ctx->cvdl->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 = avctx->sw_pix_fmt;
hwframe_ctx->width = avctx->width;
hwframe_ctx->height = avctx->height;
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(ctx->cvdl->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;
CuvidParsedFrame parsed_frame = { { 0 } };
parsed_frame.dispinfo = *dispinfo;
ctx->internal_error = 0;
if (ctx->deint_mode == cudaVideoDeinterlaceMode_Weave) {
av_fifo_generic_write(ctx->frame_queue, &parsed_frame, sizeof(CuvidParsedFrame), NULL);
} else {
parsed_frame.is_deinterlacing = 1;
av_fifo_generic_write(ctx->frame_queue, &parsed_frame, sizeof(CuvidParsedFrame), NULL);
parsed_frame.second_field = 1;
av_fifo_generic_write(ctx->frame_queue, &parsed_frame, sizeof(CuvidParsedFrame), NULL);
}
return 1;
}
static int cuvid_decode_packet(AVCodecContext *avctx, const 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;
CUVIDSOURCEDATAPACKET cupkt;
AVPacket filter_packet = { 0 };
AVPacket filtered_packet = { 0 };
int ret = 0, eret = 0, is_flush = ctx->decoder_flushing;
av_log(avctx, AV_LOG_TRACE, "cuvid_decode_packet\n");
if (is_flush && avpkt && avpkt->size)
return AVERROR_EOF;
if ((av_fifo_size(ctx->frame_queue) / sizeof(CuvidParsedFrame)) + 2 > ctx->nb_surfaces && avpkt && avpkt->size)
return AVERROR(EAGAIN);
if (ctx->bsf && avpkt && 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(ctx->cudl->cuCtxPushCurrent(cuda_ctx));
if (ret < 0) {
av_packet_unref(&filtered_packet);
return ret;
}
memset(&cupkt, 0, sizeof(cupkt));
if (avpkt && avpkt->size) {
cupkt.payload_size = avpkt->size;
cupkt.payload = avpkt->data;
if (avpkt->pts != AV_NOPTS_VALUE) {
cupkt.flags = CUVID_PKT_TIMESTAMP;
if (avctx->pkt_timebase.num && avctx->pkt_timebase.den)
cupkt.timestamp = av_rescale_q(avpkt->pts, avctx->pkt_timebase, (AVRational){1, 10000000});
else
cupkt.timestamp = avpkt->pts;
}
} else {
cupkt.flags = CUVID_PKT_ENDOFSTREAM;
ctx->decoder_flushing = 1;
}
ret = CHECK_CU(ctx->cvdl->cuvidParseVideoData(ctx->cuparser, &cupkt));
av_packet_unref(&filtered_packet);
if (ret < 0)
goto error;
// cuvidParseVideoData doesn't return an error just because stuff failed...
if (ctx->internal_error) {
av_log(avctx, AV_LOG_ERROR, "cuvid decode callback error\n");
ret = ctx->internal_error;
goto error;
}
error:
eret = CHECK_CU(ctx->cudl->cuCtxPopCurrent(&dummy));
if (eret < 0)
return eret;
else if (ret < 0)
return ret;
else if (is_flush)
return AVERROR_EOF;
else
return 0;
}
static int cuvid_output_frame(AVCodecContext *avctx, AVFrame *frame)
{
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;
CUdeviceptr mapped_frame = 0;
int ret = 0, eret = 0;
av_log(avctx, AV_LOG_TRACE, "cuvid_output_frame\n");
if (ctx->decoder_flushing) {
ret = cuvid_decode_packet(avctx, NULL);
if (ret < 0 && ret != AVERROR_EOF)
return ret;
}
ret = CHECK_CU(ctx->cudl->cuCtxPushCurrent(cuda_ctx));
if (ret < 0)
return ret;
if (av_fifo_size(ctx->frame_queue)) {
CuvidParsedFrame parsed_frame;
CUVIDPROCPARAMS params;
unsigned int pitch = 0;
int offset = 0;
int i;
av_fifo_generic_read(ctx->frame_queue, &parsed_frame, sizeof(CuvidParsedFrame), NULL);
memset(&params, 0, sizeof(params));
params.progressive_frame = parsed_frame.dispinfo.progressive_frame;
params.second_field = parsed_frame.second_field;
params.top_field_first = parsed_frame.dispinfo.top_field_first;
ret = CHECK_CU(ctx->cvdl->cuvidMapVideoFrame(ctx->cudecoder, parsed_frame.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->height >> (i ? 1 : 0),
};
ret = CHECK_CU(ctx->cudl->cuMemcpy2D(&cpy));
if (ret < 0)
goto error;
offset += avctx->coded_height;
}
} else if (avctx->pix_fmt == AV_PIX_FMT_NV12 ||
avctx->pix_fmt == AV_PIX_FMT_P010 ||
avctx->pix_fmt == AV_PIX_FMT_P016) {
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;
if (avctx->pkt_timebase.num && avctx->pkt_timebase.den)
frame->pts = av_rescale_q(parsed_frame.dispinfo.timestamp, (AVRational){1, 10000000}, avctx->pkt_timebase);
else
frame->pts = parsed_frame.dispinfo.timestamp;
if (parsed_frame.second_field) {
if (ctx->prev_pts == INT64_MIN) {
ctx->prev_pts = frame->pts;
frame->pts += (avctx->pkt_timebase.den * avctx->framerate.den) / (avctx->pkt_timebase.num * avctx->framerate.num);
} else {
int pts_diff = (frame->pts - ctx->prev_pts) / 2;
ctx->prev_pts = frame->pts;
frame->pts += pts_diff;
}
}
/* CUVIDs opaque reordering breaks the internal pkt logic.
* So set pkt_pts and clear all the other pkt_ fields.
*/
#if FF_API_PKT_PTS
FF_DISABLE_DEPRECATION_WARNINGS
frame->pkt_pts = frame->pts;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
av_frame_set_pkt_pos(frame, -1);
av_frame_set_pkt_duration(frame, 0);
av_frame_set_pkt_size(frame, -1);
frame->interlaced_frame = !parsed_frame.is_deinterlacing && !parsed_frame.dispinfo.progressive_frame;
if (frame->interlaced_frame)
frame->top_field_first = parsed_frame.dispinfo.top_field_first;
} else if (ctx->decoder_flushing) {
ret = AVERROR_EOF;
} else {
ret = AVERROR(EAGAIN);
}
error:
if (mapped_frame)
eret = CHECK_CU(ctx->cvdl->cuvidUnmapVideoFrame(ctx->cudecoder, mapped_frame));
eret = CHECK_CU(ctx->cudl->cuCtxPopCurrent(&dummy));
if (eret < 0)
return eret;
else
return ret;
}
static int cuvid_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
{
CuvidContext *ctx = avctx->priv_data;
AVFrame *frame = data;
int ret = 0;
av_log(avctx, AV_LOG_TRACE, "cuvid_decode_frame\n");
if (ctx->deint_mode != cudaVideoDeinterlaceMode_Weave) {
av_log(avctx, AV_LOG_ERROR, "Deinterlacing is not supported via the old API\n");
return AVERROR(EINVAL);
}
if (!ctx->decoder_flushing) {
ret = cuvid_decode_packet(avctx, avpkt);
if (ret < 0)
return ret;
}
ret = cuvid_output_frame(avctx, frame);
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
*got_frame = 0;
} else if (ret < 0) {
return ret;
} else {
*got_frame = 1;
}
return 0;
}
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)
ctx->cvdl->cuvidDestroyVideoParser(ctx->cuparser);
if (ctx->cudecoder)
ctx->cvdl->cuvidDestroyDecoder(ctx->cudecoder);
ctx->cudl = NULL;
av_buffer_unref(&ctx->hwframe);
av_buffer_unref(&ctx->hwdevice);
cuvid_free_functions(&ctx->cvdl);
return 0;
}
static int cuvid_test_dummy_decoder(AVCodecContext *avctx,
const CUVIDPARSERPARAMS *cuparseinfo,
int probed_width,
int probed_height)
{
CuvidContext *ctx = avctx->priv_data;
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 = probed_width;
cuinfo.ulHeight = probed_height;
cuinfo.ulTargetWidth = cuinfo.ulWidth;
cuinfo.ulTargetHeight = cuinfo.ulHeight;
cuinfo.target_rect.left = 0;
cuinfo.target_rect.top = 0;
cuinfo.target_rect.right = cuinfo.ulWidth;
cuinfo.target_rect.bottom = cuinfo.ulHeight;
cuinfo.ulNumDecodeSurfaces = ctx->nb_surfaces;
cuinfo.ulNumOutputSurfaces = 1;
cuinfo.ulCreationFlags = cudaVideoCreate_PreferCUVID;
cuinfo.bitDepthMinus8 = 0;
cuinfo.DeinterlaceMode = cudaVideoDeinterlaceMode_Weave;
ret = CHECK_CU(ctx->cvdl->cuvidCreateDecoder(&cudec, &cuinfo));
if (ret < 0)
return ret;
ret = CHECK_CU(ctx->cvdl->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;
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 };
int probed_width = avctx->coded_width ? avctx->coded_width : 1280;
int probed_height = avctx->coded_height ? avctx->coded_height : 720;
// Accelerated transcoding scenarios with 'ffmpeg' require that the
// pix_fmt be set to AV_PIX_FMT_CUDA early. The sw_pix_fmt, and the
// pix_fmt for non-accelerated transcoding, do not need to be correct
// but need to be set to something. We arbitrarily pick NV12.
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;
}
avctx->pix_fmt = ret;
ret = cuvid_load_functions(&ctx->cvdl);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed loading nvcuvid.\n");
goto error;
}
ctx->frame_queue = av_fifo_alloc(ctx->nb_surfaces * sizeof(CuvidParsedFrame));
if (!ctx->frame_queue) {
ret = AVERROR(ENOMEM);
goto error;
}
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;
}
} else {
ret = av_hwdevice_ctx_create(&ctx->hwdevice, AV_HWDEVICE_TYPE_CUDA, ctx->cu_gpu, NULL, 0);
if (ret < 0)
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;
}
hwframe_ctx = (AVHWFramesContext*)ctx->hwframe->data;
}
device_ctx = hwframe_ctx->device_ctx;
device_hwctx = device_ctx->hwctx;
cuda_ctx = device_hwctx->cuda_ctx;
ctx->cudl = device_hwctx->internal->cuda_dl;
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_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 = ctx->nb_surfaces;
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(ctx->cudl->cuCtxPushCurrent(cuda_ctx));
if (ret < 0)
goto error;
ret = cuvid_test_dummy_decoder(avctx, &ctx->cuparseinfo,
probed_width,
probed_height);
if (ret < 0)
goto error;
ret = CHECK_CU(ctx->cvdl->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(ctx->cvdl->cuvidParseVideoData(ctx->cuparser, &seq_pkt));
if (ret < 0)
goto error;
}
ret = CHECK_CU(ctx->cudl->cuCtxPopCurrent(&dummy));
if (ret < 0)
goto error;
ctx->prev_pts = INT64_MIN;
if (!avctx->pkt_timebase.num || !avctx->pkt_timebase.den)
av_log(avctx, AV_LOG_WARNING, "Invalid pkt_timebase, passing timestamps as-is.\n");
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;
CUVIDSOURCEDATAPACKET seq_pkt = { 0 };
int ret;
ret = CHECK_CU(ctx->cudl->cuCtxPushCurrent(cuda_ctx));
if (ret < 0)
goto error;
av_fifo_freep(&ctx->frame_queue);
ctx->frame_queue = av_fifo_alloc(ctx->nb_surfaces * sizeof(CuvidParsedFrame));
if (!ctx->frame_queue) {
av_log(avctx, AV_LOG_ERROR, "Failed to recreate frame queue on flush\n");
return;
}
if (ctx->cudecoder) {
ctx->cvdl->cuvidDestroyDecoder(ctx->cudecoder);
ctx->cudecoder = NULL;
}
if (ctx->cuparser) {
ctx->cvdl->cuvidDestroyVideoParser(ctx->cuparser);
ctx->cuparser = NULL;
}
ret = CHECK_CU(ctx->cvdl->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(ctx->cvdl->cuvidParseVideoData(ctx->cuparser, &seq_pkt));
if (ret < 0)
goto error;
}
ret = CHECK_CU(ctx->cudl->cuCtxPopCurrent(&dummy));
if (ret < 0)
goto error;
ctx->prev_pts = INT64_MIN;
ctx->decoder_flushing = 0;
return;
error:
av_log(avctx, AV_LOG_ERROR, "CUDA reinit on flush failed\n");
}
#define OFFSET(x) offsetof(CuvidContext, x)
#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
static const AVOption options[] = {
{ "deint", "Set deinterlacing mode", OFFSET(deint_mode), AV_OPT_TYPE_INT, { .i64 = cudaVideoDeinterlaceMode_Weave }, cudaVideoDeinterlaceMode_Weave, cudaVideoDeinterlaceMode_Adaptive, VD, "deint" },
{ "weave", "Weave deinterlacing (do nothing)", 0, AV_OPT_TYPE_CONST, { .i64 = cudaVideoDeinterlaceMode_Weave }, 0, 0, VD, "deint" },
{ "bob", "Bob deinterlacing", 0, AV_OPT_TYPE_CONST, { .i64 = cudaVideoDeinterlaceMode_Bob }, 0, 0, VD, "deint" },
{ "adaptive", "Adaptive deinterlacing", 0, AV_OPT_TYPE_CONST, { .i64 = cudaVideoDeinterlaceMode_Adaptive }, 0, 0, VD, "deint" },
{ "gpu", "GPU to be used for decoding", OFFSET(cu_gpu), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, VD },
{ "surfaces", "Maximum surfaces to be used for decoding", OFFSET(nb_surfaces), AV_OPT_TYPE_INT, { .i64 = 25 }, 0, INT_MAX, VD },
{ NULL }
};
#define DEFINE_CUVID_CODEC(x, X) \
static const AVClass x##_cuvid_class = { \
.class_name = #x "_cuvid", \
.item_name = av_default_item_name, \
.option = options, \
.version = LIBAVUTIL_VERSION_INT, \
}; \
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), \
.priv_class = &x##_cuvid_class, \
.init = cuvid_decode_init, \
.close = cuvid_decode_end, \
.decode = cuvid_decode_frame, \
.send_packet = cuvid_decode_packet, \
.receive_frame = cuvid_output_frame, \
.flush = cuvid_flush, \
.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING, \
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_CUDA, \
AV_PIX_FMT_NV12, \
AV_PIX_FMT_P010, \
AV_PIX_FMT_P016, \
AV_PIX_FMT_NONE }, \
};
#if CONFIG_HEVC_CUVID_DECODER
DEFINE_CUVID_CODEC(hevc, HEVC)
#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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