/* * VDA HW acceleration * * copyright (c) 2011 Sebastien Zwickert * * 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 */ #ifndef AVCODEC_VDA_H #define AVCODEC_VDA_H #include <pthread.h> #include <stdint.h> // emmintrin.h is unable to compile with -std=c99 -Werror=missing-prototypes // http://openradar.appspot.com/8026390 #undef __GNUC_STDC_INLINE__ #define Picture QuickdrawPicture #include <VideoDecodeAcceleration/VDADecoder.h> #undef Picture /** * This structure is used to store a decoded frame information and data. */ typedef struct { /** * The PTS of the frame. * * - encoding: unused * - decoding: Set/Unset by libavcodec. */ int64_t pts; /** * The CoreVideo buffer that contains the decoded data. * * - encoding: unused * - decoding: Set/Unset by libavcodec. */ CVPixelBufferRef cv_buffer; /** * A pointer to the next frame. * * - encoding: unused * - decoding: Set/Unset by libavcodec. */ struct vda_frame *next_frame; } vda_frame; /** * This structure is used to provide the necessary configurations and data * to the VDA FFmpeg HWAccel implementation. * * The application must make it available as AVCodecContext.hwaccel_context. */ struct vda_context { /** * VDA decoder object. * * - encoding: unused * - decoding: Set/Unset by libavcodec. */ VDADecoder decoder; /** * VDA frames queue ordered by presentation timestamp. * * - encoding: unused * - decoding: Set/Unset by libavcodec. */ vda_frame *queue; /** * Mutex for locking queue operations. * * - encoding: unused * - decoding: Set/Unset by libavcodec. */ pthread_mutex_t queue_mutex; /** * The frame width. * * - encoding: unused * - decoding: Set/Unset by user. */ int width; /** * The frame height. * * - encoding: unused * - decoding: Set/Unset by user. */ int height; /** * The frame format. * * - encoding: unused * - decoding: Set/Unset by user. */ int format; /** * The pixel format for output image buffers. * * - encoding: unused * - decoding: Set/Unset by user. */ OSType cv_pix_fmt_type; /** * The current bitstream buffer. * * - encoding: unused * - decoding: Set/Unset by libavcodec. */ uint8_t *bitstream; /** * The current size of the bitstream. * * - encoding: unused * - decoding: Set/Unset by libavcodec. */ int bitstream_size; /** * The reference size used for fast reallocation. * * - encoding: unused * - decoding: Set/Unset by libavcodec. */ int ref_size; }; /** Create the video decoder. */ int ff_vda_create_decoder(struct vda_context *vda_ctx, uint8_t *extradata, int extradata_size); /** Destroy the video decoder. */ int ff_vda_destroy_decoder(struct vda_context *vda_ctx); /** Return the top frame of the queue. */ vda_frame *ff_vda_queue_pop(struct vda_context *vda_ctx); /** Release the given frame. */ void ff_vda_release_vda_frame(vda_frame *frame); #endif /* AVCODEC_VDA_H */