mirror of https://github.com/opencv/opencv.git
Vadim Pisarevsky
13 years ago
parent
82db65ae8f
commit
213a23e860
55 changed files with 3626 additions and 931 deletions
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#include "cap_ffmpeg_impl.hpp" |
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#include "cap_ffmpeg_impl_v2.hpp" |
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/*
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* VDA HW acceleration |
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* |
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* copyright (c) 2011 Sebastien Zwickert |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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_VDA_H |
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#define AVCODEC_VDA_H |
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#include <pthread.h> |
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#include <stdint.h> |
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// emmintrin.h is unable to compile with -std=c99 -Werror=missing-prototypes
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// http://openradar.appspot.com/8026390
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#undef __GNUC_STDC_INLINE__ |
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#define Picture QuickdrawPicture |
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#include <VideoDecodeAcceleration/VDADecoder.h> |
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#undef Picture |
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/**
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* This structure is used to store a decoded frame information and data. |
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*/ |
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typedef struct { |
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/**
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* The PTS of the frame. |
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* |
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* - encoding: unused |
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* - decoding: Set/Unset by libavcodec. |
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*/ |
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int64_t pts; |
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/**
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* The CoreVideo buffer that contains the decoded data. |
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* |
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* - encoding: unused |
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* - decoding: Set/Unset by libavcodec. |
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*/ |
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CVPixelBufferRef cv_buffer; |
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/**
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* A pointer to the next frame. |
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* |
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* - encoding: unused |
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* - decoding: Set/Unset by libavcodec. |
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*/ |
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struct vda_frame *next_frame; |
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} vda_frame; |
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/**
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* This structure is used to provide the necessary configurations and data |
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* to the VDA FFmpeg HWAccel implementation. |
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* |
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* The application must make it available as AVCodecContext.hwaccel_context. |
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*/ |
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struct vda_context { |
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/**
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* VDA decoder object. |
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* |
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* - encoding: unused |
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* - decoding: Set/Unset by libavcodec. |
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*/ |
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VDADecoder decoder; |
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/**
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* VDA frames queue ordered by presentation timestamp. |
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* |
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* - encoding: unused |
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* - decoding: Set/Unset by libavcodec. |
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*/ |
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vda_frame *queue; |
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/**
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* Mutex for locking queue operations. |
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* |
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* - encoding: unused |
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* - decoding: Set/Unset by libavcodec. |
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*/ |
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pthread_mutex_t queue_mutex; |
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/**
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* The frame width. |
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* |
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* - encoding: unused |
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* - decoding: Set/Unset by user. |
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*/ |
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int width; |
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/**
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* The frame height. |
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* |
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* - encoding: unused |
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* - decoding: Set/Unset by user. |
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*/ |
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int height; |
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/**
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* The frame format. |
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* |
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* - encoding: unused |
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* - decoding: Set/Unset by user. |
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*/ |
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int format; |
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/**
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* The pixel format for output image buffers. |
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* |
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* - encoding: unused |
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* - decoding: Set/Unset by user. |
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*/ |
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OSType cv_pix_fmt_type; |
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/**
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* The current bitstream buffer. |
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* |
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* - encoding: unused |
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* - decoding: Set/Unset by libavcodec. |
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*/ |
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uint8_t *bitstream; |
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/**
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* The current size of the bitstream. |
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* |
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* - encoding: unused |
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* - decoding: Set/Unset by libavcodec. |
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*/ |
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int bitstream_size; |
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/**
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* The reference size used for fast reallocation. |
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* |
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* - encoding: unused |
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* - decoding: Set/Unset by libavcodec. |
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*/ |
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int ref_size; |
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}; |
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/** Create the video decoder. */ |
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int ff_vda_create_decoder(struct vda_context *vda_ctx, |
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uint8_t *extradata, |
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int extradata_size); |
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/** Destroy the video decoder. */ |
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int ff_vda_destroy_decoder(struct vda_context *vda_ctx); |
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/** Return the top frame of the queue. */ |
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vda_frame *ff_vda_queue_pop(struct vda_context *vda_ctx); |
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/** Release the given frame. */ |
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void ff_vda_release_vda_frame(vda_frame *frame); |
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#endif /* AVCODEC_VDA_H */ |
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/*
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* Copyright (c) 2011 Mans Rullgard |
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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 |
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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 AVUTIL_INTFLOAT_H |
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#define AVUTIL_INTFLOAT_H |
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#include <stdint.h> |
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#include "attributes.h" |
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union av_intfloat32 { |
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uint32_t i; |
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float f; |
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}; |
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union av_intfloat64 { |
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uint64_t i; |
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double f; |
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}; |
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/**
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* Reinterpret a 32-bit integer as a float. |
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*/ |
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static av_always_inline float av_int2float(uint32_t i) |
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{ |
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union av_intfloat32 v = { .i = i }; |
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return v.f; |
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} |
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/**
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* Reinterpret a float as a 32-bit integer. |
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*/ |
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static av_always_inline uint32_t av_float2int(float f) |
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{ |
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union av_intfloat32 v = { .f = f }; |
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return v.i; |
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} |
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/**
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* Reinterpret a 64-bit integer as a double. |
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*/ |
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static av_always_inline double av_int2double(uint64_t i) |
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{ |
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union av_intfloat64 v = { .i = i }; |
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return v.f; |
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} |
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/**
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* Reinterpret a double as a 64-bit integer. |
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*/ |
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static av_always_inline uint64_t av_double2int(double f) |
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{ |
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union av_intfloat64 v = { .f = f }; |
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return v.i; |
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} |
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#endif /* AVUTIL_INTFLOAT_H */ |
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