mirror of https://github.com/FFmpeg/FFmpeg.git
Some parts of the code are based on a patch by Timo Rothenpieler <timo@rothenpieler.org>pull/272/head
Anton Khirnov
8 years ago
parent
704311b294
commit
b9129ec466
10 changed files with 687 additions and 2 deletions
@ -0,0 +1,425 @@ |
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/*
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* HW decode acceleration through CUVID |
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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 <cuda.h> |
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#include <cuviddec.h> |
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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.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 "cuvid.h" |
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#include "internal.h" |
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typedef struct CUVIDDecoder { |
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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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} CUVIDDecoder; |
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typedef struct CUVIDFramePool { |
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unsigned int dpb_size; |
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unsigned int nb_allocated; |
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} CUVIDFramePool; |
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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 cuvid_decoder_free(void *opaque, uint8_t *data) |
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{ |
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CUVIDDecoder *decoder = (CUVIDDecoder*)data; |
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if (decoder->decoder) |
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cuvidDestroyDecoder(decoder->decoder); |
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av_buffer_unref(&decoder->hw_device_ref); |
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av_freep(&decoder); |
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} |
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static int cuvid_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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CUVIDDecoder *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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cuvid_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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err = 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 = cuvidCreateDecoder(&decoder->decoder, params); |
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cuCtxPopCurrent(&dummy); |
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if (err != CUDA_SUCCESS) { |
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av_log(logctx, AV_LOG_ERROR, "Error creating a CUVID 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 *cuvid_decoder_frame_alloc(void *opaque, int size) |
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{ |
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CUVIDFramePool *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_cuvid_decode_uninit(AVCodecContext *avctx) |
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{ |
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CUVIDContext *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_cuvid_decode_init(AVCodecContext *avctx, unsigned int dpb_size) |
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{ |
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CUVIDContext *ctx = avctx->internal->hwaccel_priv_data; |
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CUVIDFramePool *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 && HAVE_CUVIDDECODECREATEINFO_BITDEPTHMINUS8 ? |
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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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#if HAVE_CUVIDDECODECREATEINFO_BITDEPTHMINUS8 |
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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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#else |
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params.OutputFormat = cudaVideoSurfaceFormat_NV12; |
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#endif |
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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 = cuvid_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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cuvid_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_cuvid_decode_uninit(avctx); |
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return ret; |
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} |
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static void cuvid_fdd_priv_free(void *priv) |
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{ |
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CUVIDFrame *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 cuvid_retrieve_data(void *logctx, AVFrame *frame) |
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{ |
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FrameDecodeData *fdd = (FrameDecodeData*)frame->opaque_ref->data; |
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CUVIDFrame *cf = (CUVIDFrame*)fdd->hwaccel_priv; |
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CUVIDDecoder *decoder = (CUVIDDecoder*)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; |
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unsigned int offset = 0; |
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int ret = 0; |
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err = cuCtxPushCurrent(decoder->cuda_ctx); |
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if (err != CUDA_SUCCESS) |
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return AVERROR_UNKNOWN; |
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err = cuvidMapVideoFrame(decoder->decoder, cf->idx, &devptr, &pitch, &vpp); |
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if (err != CUDA_SUCCESS) { |
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av_log(logctx, AV_LOG_ERROR, "Error mapping a picture with CUVID: %d\n", |
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err); |
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ret = AVERROR_UNKNOWN; |
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goto finish; |
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} |
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for (i = 0; frame->data[i]; i++) { |
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CUDA_MEMCPY2D cpy = { |
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.srcMemoryType = CU_MEMORYTYPE_DEVICE, |
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.dstMemoryType = CU_MEMORYTYPE_DEVICE, |
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.srcDevice = devptr, |
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.dstDevice = (CUdeviceptr)frame->data[i], |
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.srcPitch = pitch, |
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.dstPitch = frame->linesize[i], |
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.srcY = offset, |
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.WidthInBytes = FFMIN(pitch, frame->linesize[i]), |
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.Height = frame->height >> (i ? 1 : 0), |
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}; |
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err = cuMemcpy2D(&cpy); |
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if (err != CUDA_SUCCESS) { |
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av_log(logctx, AV_LOG_ERROR, "Error copying decoded frame: %d\n", |
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err); |
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ret = AVERROR_UNKNOWN; |
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goto copy_fail; |
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} |
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offset += cpy.Height; |
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} |
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copy_fail: |
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cuvidUnmapVideoFrame(decoder->decoder, devptr); |
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finish: |
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cuCtxPopCurrent(&dummy); |
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return ret; |
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} |
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int ff_cuvid_start_frame(AVCodecContext *avctx, AVFrame *frame) |
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{ |
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CUVIDContext *ctx = avctx->internal->hwaccel_priv_data; |
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FrameDecodeData *fdd = (FrameDecodeData*)frame->opaque_ref->data; |
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CUVIDFrame *cf = NULL; |
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int ret; |
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ctx->bitstream_len = 0; |
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ctx->nb_slices = 0; |
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if (fdd->hwaccel_priv) |
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return 0; |
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cf = av_mallocz(sizeof(*cf)); |
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if (!cf) |
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return AVERROR(ENOMEM); |
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cf->decoder_ref = av_buffer_ref(ctx->decoder_ref); |
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if (!cf->decoder_ref) |
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goto fail; |
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cf->idx_ref = av_buffer_pool_get(ctx->decoder_pool); |
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if (!cf->idx_ref) { |
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av_log(avctx, AV_LOG_ERROR, "No decoder surfaces left\n"); |
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ret = AVERROR(ENOMEM); |
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goto fail; |
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} |
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cf->idx = *(unsigned int*)cf->idx_ref->data; |
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fdd->hwaccel_priv = cf; |
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fdd->hwaccel_priv_free = cuvid_fdd_priv_free; |
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fdd->post_process = cuvid_retrieve_data; |
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return 0; |
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fail: |
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cuvid_fdd_priv_free(cf); |
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return ret; |
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} |
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int ff_cuvid_end_frame(AVCodecContext *avctx) |
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{ |
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CUVIDContext *ctx = avctx->internal->hwaccel_priv_data; |
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CUVIDDecoder *decoder = (CUVIDDecoder*)ctx->decoder_ref->data; |
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CUVIDPICPARAMS *pp = &ctx->pic_params; |
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CUresult err; |
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CUcontext dummy; |
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int ret = 0; |
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pp->nBitstreamDataLen = ctx->bitstream_len; |
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pp->pBitstreamData = ctx->bitstream; |
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pp->nNumSlices = ctx->nb_slices; |
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pp->pSliceDataOffsets = ctx->slice_offsets; |
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err = cuCtxPushCurrent(decoder->cuda_ctx); |
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if (err != CUDA_SUCCESS) |
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return AVERROR_UNKNOWN; |
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err = cuvidDecodePicture(decoder->decoder, &ctx->pic_params); |
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if (err != CUDA_SUCCESS) { |
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av_log(avctx, AV_LOG_ERROR, "Error decoding a picture with CUVID: %d\n", |
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err); |
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ret = AVERROR_UNKNOWN; |
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goto finish; |
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} |
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finish: |
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cuCtxPopCurrent(&dummy); |
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return ret; |
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} |
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@ -0,0 +1,61 @@ |
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/*
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* HW decode acceleration through CUVID |
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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 |
||||
* 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, |
||||
* 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. |
||||
* |
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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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#ifndef AVCODEC_CUVID_H |
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#define AVCODEC_CUVID_H |
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#include <cuviddec.h> |
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#include <stdint.h> |
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#include "libavutil/buffer.h" |
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#include "libavutil/frame.h" |
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#include "avcodec.h" |
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typedef struct CUVIDFrame { |
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unsigned int idx; |
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AVBufferRef *idx_ref; |
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AVBufferRef *decoder_ref; |
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} CUVIDFrame; |
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typedef struct CUVIDContext { |
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CUVIDPICPARAMS pic_params; |
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AVBufferPool *decoder_pool; |
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|
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AVBufferRef *decoder_ref; |
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|
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uint8_t *bitstream; |
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int bitstream_len; |
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unsigned int bitstream_allocated; |
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|
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unsigned *slice_offsets; |
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int nb_slices; |
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unsigned int slice_offsets_allocated; |
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} CUVIDContext; |
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int ff_cuvid_decode_init(AVCodecContext *avctx, unsigned int dpb_size); |
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int ff_cuvid_decode_uninit(AVCodecContext *avctx); |
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int ff_cuvid_start_frame(AVCodecContext *avctx, AVFrame *frame); |
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int ff_cuvid_end_frame(AVCodecContext *avctx); |
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|
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#endif /* AVCODEC_CUVID_H */ |
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@ -0,0 +1,177 @@ |
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/*
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* MPEG-4 Part 10 / AVC / H.264 HW decode acceleration through CUVID |
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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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* |
||||
* 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 |
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*/ |
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|
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#include <cuviddec.h> |
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#include <stdint.h> |
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#include <string.h> |
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|
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#include "avcodec.h" |
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#include "cuvid.h" |
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#include "decode.h" |
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#include "internal.h" |
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#include "h264dec.h" |
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|
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static void dpb_add(const H264Context *h, CUVIDH264DPBENTRY *dst, const H264Picture *src, |
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int frame_idx) |
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{ |
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FrameDecodeData *fdd = (FrameDecodeData*)src->f->opaque_ref->data; |
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const CUVIDFrame *cf = fdd->hwaccel_priv; |
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|
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dst->PicIdx = cf ? cf->idx : -1; |
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dst->FrameIdx = frame_idx; |
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dst->is_long_term = src->long_ref; |
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dst->not_existing = 0; |
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dst->used_for_reference = src->reference & 3; |
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dst->FieldOrderCnt[0] = src->field_poc[0]; |
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dst->FieldOrderCnt[1] = src->field_poc[1]; |
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} |
||||
|
||||
static int cuvid_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; |
||||
|
||||
CUVIDContext *ctx = avctx->internal->hwaccel_priv_data; |
||||
CUVIDPICPARAMS *pp = &ctx->pic_params; |
||||
CUVIDH264PICPARAMS *ppc = &pp->CodecSpecific.h264; |
||||
FrameDecodeData *fdd; |
||||
CUVIDFrame *cf; |
||||
|
||||
int i, dpb_size, ret; |
||||
|
||||
ret = ff_cuvid_start_frame(avctx, h->cur_pic_ptr->f); |
||||
if (ret < 0) |
||||
return ret; |
||||
|
||||
fdd = (FrameDecodeData*)h->cur_pic_ptr->f->opaque_ref->data; |
||||
cf = (CUVIDFrame*)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 cuvid_h264_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, |
||||
uint32_t size) |
||||
{ |
||||
CUVIDContext *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 cuvid_h264_decode_init(AVCodecContext *avctx) |
||||
{ |
||||
const H264Context *h = avctx->priv_data; |
||||
const SPS *sps = h->ps.sps; |
||||
return ff_cuvid_decode_init(avctx, sps->ref_frame_count + sps->num_reorder_frames); |
||||
} |
||||
|
||||
AVHWAccel ff_h264_cuvid_hwaccel = { |
||||
.name = "h264_cuvid", |
||||
.type = AVMEDIA_TYPE_VIDEO, |
||||
.id = AV_CODEC_ID_H264, |
||||
.pix_fmt = AV_PIX_FMT_CUDA, |
||||
.start_frame = cuvid_h264_start_frame, |
||||
.end_frame = ff_cuvid_end_frame, |
||||
.decode_slice = cuvid_h264_decode_slice, |
||||
.init = cuvid_h264_decode_init, |
||||
.uninit = ff_cuvid_decode_uninit, |
||||
.priv_data_size = sizeof(CUVIDContext), |
||||
}; |
||||
Loading…
Reference in new issue