/* * 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_PTHREAD_INTERNAL_H #define AVCODEC_PTHREAD_INTERNAL_H #include "avcodec.h" /* H.264 slice threading seems to be buggy with more than 16 threads, * limit the number of threads to 16 for automatic detection */ #define MAX_AUTO_THREADS … int ff_slice_thread_init(AVCodecContext *avctx); void ff_slice_thread_free(AVCodecContext *avctx); int ff_frame_thread_init(AVCodecContext *avctx); void ff_frame_thread_free(AVCodecContext *avctx, int thread_count); #define THREAD_SENTINEL … /** * Initialize/destroy a list of mutexes/conditions contained in a structure. * The positions of these mutexes/conditions in the structure are given by * their offsets. Because it is undefined behaviour to destroy * an uninitialized mutex/condition, ff_pthread_init() stores the number * of successfully initialized mutexes and conditions in the object itself * and ff_pthread_free() uses this number to destroy exactly the mutexes and * condition variables that have been successfully initialized. * * @param obj The object containing the mutexes/conditions. * @param[in] offsets An array of offsets. Its first member gives the offset * of the variable that contains the count of successfully * initialized mutexes/condition variables; said variable * must be an unsigned int. Two arrays of offsets, each * delimited by a THREAD_SENTINEL follow. The first * contains the offsets of all the mutexes, the second * contains the offsets of all the condition variables. */ int ff_pthread_init(void *obj, const unsigned offsets[]); void ff_pthread_free(void *obj, const unsigned offsets[]); /** * Macros to help creating the above lists. mutexes and conds need * to be parentheses-enclosed lists of offsets in the containing structure. */ #define OFFSET_ARRAY(...) … #define DEFINE_OFFSET_ARRAY(type, name, cnt_variable, mutexes, conds) … #endif // AVCODEC_PTHREAD_INTERNAL_H
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