/* * VDA HW acceleration * * copyright (c) 2011 Sebastien Zwickert * * This file is part of Libav. * * 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 */ #ifndef AVCODEC_VDA_H #define AVCODEC_VDA_H /** * @file * @ingroup lavc_codec_hwaccel_vda * Public libavcodec VDA header. */ #include "libavcodec/version.h" #if FF_API_VDA_ASYNC #include <pthread.h> #endif #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 /** * @defgroup lavc_codec_hwaccel_vda VDA * @ingroup lavc_codec_hwaccel * * @{ */ #if FF_API_VDA_ASYNC /** * This structure is used to store decoded frame information and data. * * @deprecated Use synchronous decoding mode. */ typedef struct vda_frame { /** * 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; #endif /** * This structure is used to provide the necessary configurations and data * to the VDA Libav 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; /** * The Core Video pixel buffer that contains the current image data. * * encoding: unused * decoding: Set by libavcodec. Unset by user. */ CVPixelBufferRef cv_buffer; /** * Use the hardware decoder in synchronous mode. * * encoding: unused * decoding: Set by user. */ int use_sync_decoding; #if FF_API_VDA_ASYNC /** * VDA frames queue ordered by presentation timestamp. * * @deprecated Use synchronous decoding mode. * * - encoding: unused * - decoding: Set/Unset by libavcodec. */ vda_frame *queue; /** * Mutex for locking queue operations. * * @deprecated Use synchronous decoding mode. * * - encoding: unused * - decoding: Set/Unset by libavcodec. */ pthread_mutex_t queue_mutex; #endif /** * 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. */ uint8_t *priv_bitstream; /** * The current size of the bitstream. */ int priv_bitstream_size; /** * The reference size used for fast reallocation. */ int priv_allocated_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); #if FF_API_VDA_ASYNC /** * Return the top frame of the queue. * * @deprecated Use synchronous decoding mode. */ vda_frame *ff_vda_queue_pop(struct vda_context *vda_ctx); /** * Release the given frame. * * @deprecated Use synchronous decoding mode. */ void ff_vda_release_vda_frame(vda_frame *frame); #endif /** * @} */ #endif /* AVCODEC_VDA_H */