| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #ifndef GUACENC_FFMPEG_COMPAT_H |
| #define GUACENC_FFMPEG_COMPAT_H |
| |
| #include "config.h" |
| #include "video.h" |
| |
| #include <libavcodec/avcodec.h> |
| |
| /* |
| * For a full list of FFmpeg API changes over the years, see: |
| * |
| * https://github.com/FFmpeg/FFmpeg/blob/master/doc/APIchanges |
| */ |
| |
| /* For libavcodec < 55.28.1: av_frame_*() was avcodec_*_frame(). */ |
| #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55,28,1) |
| #define av_frame_alloc avcodec_alloc_frame |
| #define av_frame_free avcodec_free_frame |
| #endif |
| |
| /* For libavcodec < 54.28.0: old avcodec_free_frame() did not exist. */ |
| #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(54,28,0) |
| #define avcodec_free_frame av_freep |
| #endif |
| |
| /* For libavcodec < 55.52.0: avcodec_free_context did not exist */ |
| #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55,52,0) |
| #define avcodec_free_context av_freep |
| #endif |
| |
| /* For libavcodec < 57.7.0: av_packet_unref() was av_free_packet() */ |
| #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(57,7,0) |
| #define av_packet_unref av_free_packet |
| #endif |
| |
| /* For libavcodec <= 56.41.100: Global header flag didn't have AV_ prefix. |
| * Guacenc defines its own flag here to avoid conflicts with libavcodec |
| * macros. |
| */ |
| #if LIBAVCODEC_VERSION_INT <= AV_VERSION_INT(56,41,100) |
| #define GUACENC_FLAG_GLOBAL_HEADER CODEC_FLAG_GLOBAL_HEADER |
| #else |
| #define GUACENC_FLAG_GLOBAL_HEADER AV_CODEC_FLAG_GLOBAL_HEADER |
| #endif |
| |
| /* For libavutil < 51.42.0: AV_PIX_FMT_* was PIX_FMT_* */ |
| #if LIBAVUTIL_VERSION_INT < AV_VERSION_INT(51,42,0) |
| #define AV_PIX_FMT_RGB32 PIX_FMT_RGB32 |
| #define AV_PIX_FMT_YUV420P PIX_FMT_YUV420P |
| #endif |
| |
| /** |
| * Writes the specied frame as a new frame of video. If pending frames of the |
| * video are being flushed, the given frame may be NULL (as required by |
| * avcodec_encode_video2()). If avcodec_encode_video2() does not exist, this |
| * function will transparently use avcodec_encode_video(). |
| * |
| * @param video |
| * The video to write the given frame to. |
| * |
| * @param frame |
| * The frame to write to the video, or NULL if previously-written frames |
| * are being flushed. |
| * |
| * @return |
| * A positive value if the frame was successfully written, zero if the |
| * frame has been saved for later writing / reordering, negative if an |
| * error occurs. |
| */ |
| int guacenc_avcodec_encode_video(guacenc_video* video, AVFrame* frame); |
| |
| /** |
| * Creates and sets up the AVCodecContext for the appropriate version of |
| * libavformat installed. The AVCodecContext will be built, but the AVStream |
| * will also be affected by having its time_base field set to the value passed |
| * into this function. |
| * |
| * @param stream |
| * The open AVStream. |
| * |
| * @param codec |
| * The codec used on the AVStream. |
| * |
| * @param bitrate |
| * The target bitrate for the encoded video |
| * |
| * @param width |
| * The target width for the encoded video. |
| * |
| * @param height |
| * The target height for the encoded video. |
| * |
| * @param gop_size |
| * The size of the Group of Pictures. |
| * |
| * @param qmax |
| * The max value of the quantizer. |
| * |
| * @param qmin |
| * The min value of the quantizer. |
| * |
| * @param pix_fmt |
| * The target pixel format for the encoded video. |
| * |
| * @param time_base |
| * The target time base for the encoded video. |
| * |
| * @return |
| * The pointer to the configured AVCodecContext. |
| * |
| */ |
| AVCodecContext* guacenc_build_avcodeccontext(AVStream* stream, AVCodec* codec, |
| int bitrate, int width, int height, int gop_size, int qmax, int qmin, |
| int pix_fmt, AVRational time_base); |
| |
| /** |
| * A wrapper for avcodec_open2(). Because libavformat ver 57.33.100 and greater |
| * use stream->codecpar rather than stream->codec to handle information to the |
| * codec, there needs to be an additional step in that version. So this |
| * wrapper handles that. Otherwise, it's the same as avcodec_open2(). |
| * |
| * @param avcodec_context |
| * The context to initialize. |
| * |
| * @param codec |
| * The codec to open this context for. If a non-NULL codec has been |
| * previously passed to avcodec_alloc_context3() or for this context, then |
| * this parameter MUST be either NULL or equal to the previously passed |
| * codec. |
| * |
| * @param options |
| * A dictionary filled with AVCodecContext and codec-private options. On |
| * return this object will be filled with options that were not found. |
| * |
| * @param stream |
| * The stream for the codec context. |
| * |
| * @return |
| * Zero on success, a negative value on error. |
| */ |
| int guacenc_open_avcodec(AVCodecContext *avcodec_context, |
| AVCodec *codec, AVDictionary **options, |
| AVStream* stream); |
| |
| #endif |
| |