1 files changed, 112 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/thread.h b/media/ffvpx/libavcodec/thread.h
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+++ b/media/ffvpx/libavcodec/thread.h
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+/*
+ * Copyright (c) 2008 Alexander Strange <astrange@ithinksw.com>
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * Multithreading support functions
+ * @author Alexander Strange <astrange@ithinksw.com>
+ */
+
+#ifndef AVCODEC_THREAD_H
+#define AVCODEC_THREAD_H
+
+#include "libavutil/buffer.h"
+
+#include "avcodec.h"
+
+/**
+ * Wait for decoding threads to finish and reset internal state.
+ * Called by avcodec_flush_buffers().
+ *
+ * @param avctx The context.
+ */
+void ff_thread_flush(AVCodecContext *avctx);
+
+/**
+ * Submit a new frame to a decoding thread.
+ * Returns the next available frame in picture. *got_picture_ptr
+ * will be 0 if none is available.
+ * The return value on success is the size of the consumed packet for
+ * compatibility with FFCodec.decode. This means the decoder
+ * has to consume the full packet.
+ *
+ * Parameters are the same as FFCodec.decode.
+ */
+int ff_thread_decode_frame(AVCodecContext *avctx, AVFrame *picture,
+                           int *got_picture_ptr, AVPacket *avpkt);
+
+/**
+ * If the codec defines update_thread_context(), call this
+ * when they are ready for the next thread to start decoding
+ * the next frame. After calling it, do not change any variables
+ * read by the update_thread_context() method, or call ff_thread_get_buffer().
+ *
+ * @param avctx The context.
+ */
+void ff_thread_finish_setup(AVCodecContext *avctx);
+
+#if FF_API_THREAD_SAFE_CALLBACKS
+/**
+ * Wrapper around get_format() for frame-multithreaded codecs.
+ * Call this function instead of avctx->get_format().
+ * Cannot be called after the codec has called ff_thread_finish_setup().
+ *
+ * @param avctx The current context.
+ * @param fmt The list of available formats.
+ */
+enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt);
+#else
+#define ff_thread_get_format ff_get_format
+#endif
+
+/**
+ * Wrapper around get_buffer() for frame-multithreaded codecs.
+ * Call this function instead of ff_get_buffer(f).
+ * Cannot be called after the codec has called ff_thread_finish_setup().
+ *
+ * @param avctx The current context.
+ * @param f The frame to write into.
+ */
+int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f, int flags);
+
+/**
+ * Wrapper around release_buffer() frame-for multithreaded codecs.
+ * Call this function instead of avctx->release_buffer(f).
+ * The AVFrame will be copied and the actual release_buffer() call
+ * will be performed later. The contents of data pointed to by the
+ * AVFrame should not be changed until ff_thread_get_buffer() is called
+ * on it.
+ *
+ * @param avctx The current context.
+ * @param f The picture being released.
+ */
+void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f);
+
+int ff_thread_init(AVCodecContext *s);
+int ff_slice_thread_execute_with_mainfunc(AVCodecContext *avctx,
+        int (*action_func2)(AVCodecContext *c, void *arg, int jobnr, int threadnr),
+        int (*main_func)(AVCodecContext *c), void *arg, int *ret, int job_count);
+void ff_thread_free(AVCodecContext *s);
+int ff_slice_thread_allocz_entries(AVCodecContext *avctx, int count);
+int ff_slice_thread_init_progress(AVCodecContext *avctx);
+void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n);
+void ff_thread_await_progress2(AVCodecContext *avctx,  int field, int thread, int shift);
+
+#endif /* AVCODEC_THREAD_H */