mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-09-12 02:14:56 +02:00
c59fec783d
When there is a non-zero decoding delay due to reordering, the first dts should be lower than the first pts (since the first packet fed to the decoder does not produce any output). Use the same scheme used in mpegvideo_enc (which comes from x264 originally) -- wait for first two timestamps and extrapolate linearly to the past to produce the first dts value.
139 lines
3.6 KiB
C
139 lines
3.6 KiB
C
/*
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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
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_NVENC_H
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#define AVCODEC_NVENC_H
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#include <cuda.h>
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#include <nvEncodeAPI.h>
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#include "libavutil/fifo.h"
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#include "libavutil/opt.h"
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#include "avcodec.h"
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typedef struct NVENCInputSurface {
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NV_ENC_INPUT_PTR in;
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NV_ENC_BUFFER_FORMAT format;
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int locked;
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} NVENCInputSurface;
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typedef struct NVENCOutputSurface {
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NV_ENC_OUTPUT_PTR out;
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NVENCInputSurface *in;
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int busy;
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} NVENCOutputSurface;
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typedef CUresult(CUDAAPI *PCUINIT)(unsigned int Flags);
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typedef CUresult(CUDAAPI *PCUDEVICEGETCOUNT)(int *count);
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typedef CUresult(CUDAAPI *PCUDEVICEGET)(CUdevice *device, int ordinal);
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typedef CUresult(CUDAAPI *PCUDEVICEGETNAME)(char *name, int len, CUdevice dev);
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typedef CUresult(CUDAAPI *PCUDEVICECOMPUTECAPABILITY)(int *major, int *minor, CUdevice dev);
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typedef CUresult(CUDAAPI *PCUCTXCREATE)(CUcontext *pctx, unsigned int flags, CUdevice dev);
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typedef CUresult(CUDAAPI *PCUCTXPOPCURRENT)(CUcontext *pctx);
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typedef CUresult(CUDAAPI *PCUCTXDESTROY)(CUcontext ctx);
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typedef NVENCSTATUS (NVENCAPI *PNVENCODEAPICREATEINSTANCE)(NV_ENCODE_API_FUNCTION_LIST *functionList);
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typedef struct NVENCLibraryContext
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{
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void *cuda;
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void *nvenc;
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PCUINIT cu_init;
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PCUDEVICEGETCOUNT cu_device_get_count;
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PCUDEVICEGET cu_device_get;
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PCUDEVICEGETNAME cu_device_get_name;
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PCUDEVICECOMPUTECAPABILITY cu_device_compute_capability;
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PCUCTXCREATE cu_ctx_create;
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PCUCTXPOPCURRENT cu_ctx_pop_current;
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PCUCTXDESTROY cu_ctx_destroy;
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NV_ENCODE_API_FUNCTION_LIST nvenc_funcs;
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} NVENCLibraryContext;
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enum {
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PRESET_DEFAULT,
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PRESET_HP,
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PRESET_HQ,
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PRESET_BD ,
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PRESET_LOW_LATENCY_DEFAULT ,
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PRESET_LOW_LATENCY_HQ ,
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PRESET_LOW_LATENCY_HP,
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PRESET_LOSSLESS_DEFAULT,
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PRESET_LOSSLESS_HP,
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};
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enum {
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NV_ENC_H264_PROFILE_BASELINE,
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NV_ENC_H264_PROFILE_MAIN,
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NV_ENC_H264_PROFILE_HIGH,
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NV_ENC_H264_PROFILE_HIGH_444,
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NV_ENC_H264_PROFILE_CONSTRAINED_HIGH,
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};
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enum {
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NVENC_LOWLATENCY = 1,
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NVENC_LOSSLESS,
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};
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enum {
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LIST_DEVICES = -2,
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ANY_DEVICE,
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};
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typedef struct NVENCContext {
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AVClass *class;
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NVENCLibraryContext nvel;
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NV_ENC_INITIALIZE_PARAMS params;
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NV_ENC_CONFIG config;
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CUcontext cu_context;
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int nb_surfaces;
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NVENCInputSurface *in;
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NVENCOutputSurface *out;
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AVFifoBuffer *timestamps;
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AVFifoBuffer *pending, *ready;
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/* timestamps of the first two frames, for computing the first dts
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* when b-frames are present */
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int64_t initial_pts[2];
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int first_packet_output;
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void *nvenc_ctx;
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int preset;
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int profile;
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int level;
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int tier;
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int rc;
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int device;
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int flags;
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} NVENCContext;
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int ff_nvenc_encode_init(AVCodecContext *avctx);
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int ff_nvenc_encode_close(AVCodecContext *avctx);
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int ff_nvenc_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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const AVFrame *frame, int *got_packet);
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#endif /* AVCODEC_NVENC_H */
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