[0aaa578] | 1 | // |
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| 2 | // moviemaker.cc |
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| 3 | // |
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[40d1db36] | 4 | // Class for writing movies from Aven for old FFmpeg |
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[0aaa578] | 5 | // |
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| 6 | // Copyright (C) 2004,2011,2012,2013,2014,2015,2016 Olly Betts |
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| 7 | // |
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| 8 | // This program is free software; you can redistribute it and/or modify |
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| 9 | // it under the terms of the GNU General Public License as published by |
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| 10 | // the Free Software Foundation; either version 2 of the License, or |
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| 11 | // (at your option) any later version. |
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| 12 | // |
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| 13 | // This program is distributed in the hope that it will be useful, |
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| 14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 16 | // GNU General Public License for more details. |
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| 17 | // |
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| 18 | // You should have received a copy of the GNU General Public License |
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| 19 | // along with this program; if not, write to the Free Software |
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| 20 | // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 21 | // |
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| 22 | |
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| 23 | /* Based on output-example.c: |
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| 24 | * |
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| 25 | * Libavformat API example: Output a media file in any supported |
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| 26 | * libavformat format. The default codecs are used. |
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| 27 | * |
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| 28 | * Copyright (c) 2003 Fabrice Bellard |
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| 29 | * |
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| 30 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
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| 31 | * of this software and associated documentation files (the "Software"), to deal |
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| 32 | * in the Software without restriction, including without limitation the rights |
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| 33 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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| 34 | * copies of the Software, and to permit persons to whom the Software is |
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| 35 | * furnished to do so, subject to the following conditions: |
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| 36 | * |
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| 37 | * The above copyright notice and this permission notice shall be included in |
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| 38 | * all copies or substantial portions of the Software. |
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| 39 | * |
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| 40 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 41 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 42 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 43 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 44 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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| 45 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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| 46 | * THE SOFTWARE. |
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| 47 | */ |
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| 48 | |
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| 49 | #ifdef HAVE_CONFIG_H |
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| 50 | #include <config.h> |
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| 51 | #endif |
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| 52 | |
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| 53 | #define __STDC_CONSTANT_MACROS |
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| 54 | |
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| 55 | #include <assert.h> |
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| 56 | #include <stdlib.h> |
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| 57 | #include <string.h> |
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| 58 | |
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| 59 | #include "moviemaker.h" |
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| 60 | |
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[40d1db36] | 61 | #ifdef WITH_FFMPEG |
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[0aaa578] | 62 | extern "C" { |
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| 63 | # include <libavutil/imgutils.h> |
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| 64 | # include <libavutil/mathematics.h> |
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| 65 | # include <libavformat/avformat.h> |
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| 66 | # include <libswscale/swscale.h> |
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| 67 | } |
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| 68 | # ifndef AV_PKT_FLAG_KEY |
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| 69 | # define AV_PKT_FLAG_KEY PKT_FLAG_KEY |
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| 70 | # endif |
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| 71 | # ifndef HAVE_AV_GUESS_FORMAT |
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| 72 | # define av_guess_format guess_format |
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| 73 | # endif |
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| 74 | # ifndef HAVE_AVIO_OPEN |
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| 75 | # define avio_open url_fopen |
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| 76 | # endif |
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| 77 | # ifndef HAVE_AVIO_CLOSE |
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| 78 | # define avio_close url_fclose |
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| 79 | # endif |
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| 80 | # ifndef HAVE_AV_FRAME_ALLOC |
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| 81 | static inline AVFrame * av_frame_alloc() { |
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| 82 | return avcodec_alloc_frame(); |
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| 83 | } |
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| 84 | # endif |
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| 85 | # ifndef HAVE_AV_FRAME_FREE |
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| 86 | # ifdef HAVE_AVCODEC_FREE_FRAME |
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| 87 | static inline void av_frame_free(AVFrame ** frame) { |
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| 88 | avcodec_free_frame(frame); |
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| 89 | } |
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| 90 | # else |
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| 91 | static inline void av_frame_free(AVFrame ** frame) { |
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| 92 | free((*frame)->data[0]); |
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| 93 | free(*frame); |
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| 94 | *frame = NULL; |
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| 95 | } |
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| 96 | # endif |
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| 97 | # endif |
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| 98 | # ifndef HAVE_AVCODEC_OPEN2 |
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| 99 | // We always pass NULL for OPTS below. |
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| 100 | # define avcodec_open2(CTX, CODEC, OPTS) avcodec_open(CTX, CODEC) |
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| 101 | # endif |
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| 102 | # ifndef HAVE_AVFORMAT_NEW_STREAM |
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| 103 | // We always pass NULL for CODEC below. |
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| 104 | # define avformat_new_stream(S, CODEC) av_new_stream(S, 0) |
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| 105 | # endif |
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| 106 | # if !HAVE_DECL_AVMEDIA_TYPE_VIDEO |
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| 107 | # define AVMEDIA_TYPE_VIDEO CODEC_TYPE_VIDEO |
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| 108 | # endif |
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| 109 | # if !HAVE_DECL_AV_CODEC_ID_NONE |
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| 110 | # define AV_CODEC_ID_NONE CODEC_ID_NONE |
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| 111 | # endif |
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| 112 | # if !HAVE_DECL_AV_PIX_FMT_RGB24 |
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| 113 | # define AV_PIX_FMT_RGB24 PIX_FMT_RGB24 |
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| 114 | # endif |
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| 115 | # if !HAVE_DECL_AV_PIX_FMT_YUV420P |
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| 116 | # define AV_PIX_FMT_YUV420P PIX_FMT_YUV420P |
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| 117 | # endif |
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| 118 | # ifndef AVIO_FLAG_WRITE |
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| 119 | # define AVIO_FLAG_WRITE URL_WRONLY |
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| 120 | # endif |
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| 121 | |
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| 122 | enum { |
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| 123 | MOVIE_NO_SUITABLE_FORMAT = 1, |
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| 124 | MOVIE_AUDIO_ONLY, |
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| 125 | MOVIE_FILENAME_TOO_LONG |
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| 126 | }; |
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| 127 | |
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| 128 | # ifndef HAVE_AVCODEC_ENCODE_VIDEO2 |
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| 129 | const int OUTBUF_SIZE = 200000; |
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| 130 | # endif |
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| 131 | #endif |
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| 132 | |
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| 133 | MovieMaker::MovieMaker() |
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[40d1db36] | 134 | #ifdef WITH_FFMPEG |
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[0aaa578] | 135 | : oc(0), video_st(0), frame(0), outbuf(0), pixels(0), sws_ctx(0), averrno(0) |
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| 136 | #endif |
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| 137 | { |
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[40d1db36] | 138 | #ifdef WITH_FFMPEG |
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[0aaa578] | 139 | static bool initialised_ffmpeg = false; |
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| 140 | if (initialised_ffmpeg) return; |
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| 141 | |
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| 142 | // FIXME: register only the codec(s) we want to use... |
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| 143 | avcodec_register_all(); |
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| 144 | av_register_all(); |
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| 145 | |
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| 146 | initialised_ffmpeg = true; |
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| 147 | #endif |
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| 148 | } |
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| 149 | |
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[40d1db36] | 150 | #ifdef WITH_FFMPEG |
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[0aaa578] | 151 | static int |
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| 152 | write_packet(void *opaque, uint8_t *buf, int buf_size) { |
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| 153 | FILE * fh = (FILE*)opaque; |
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| 154 | size_t res = fwrite(buf, 1, buf_size, fh); |
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| 155 | return res > 0 ? res : -1; |
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| 156 | } |
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[420cda9] | 157 | |
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| 158 | static int64_t |
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| 159 | seek_stream(void *opaque, int64_t offset, int whence) { |
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| 160 | FILE * fh = (FILE*)opaque; |
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| 161 | return fseek(fh, offset, whence); |
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| 162 | } |
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[0aaa578] | 163 | #endif |
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| 164 | |
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| 165 | #define MAX_EXTENSION_LEN 8 |
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| 166 | |
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| 167 | bool MovieMaker::Open(FILE* fh, const char * ext, int width, int height) |
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| 168 | { |
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[40d1db36] | 169 | #ifdef WITH_FFMPEG |
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[0aaa578] | 170 | fh_to_close = fh; |
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| 171 | |
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| 172 | AVOutputFormat * fmt = NULL; |
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| 173 | char dummy_filename[MAX_EXTENSION_LEN + 3] = "x."; |
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| 174 | if (strlen(ext) <= MAX_EXTENSION_LEN) { |
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| 175 | strcpy(dummy_filename + 2, ext); |
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| 176 | // Pass "x." + extension to av_guess_format() to avoid having to deal |
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| 177 | // with wide character filenames. |
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| 178 | fmt = av_guess_format(NULL, dummy_filename, NULL); |
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| 179 | } |
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| 180 | if (!fmt) { |
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| 181 | // We couldn't deduce the output format from file extension so default |
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| 182 | // to MPEG. |
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| 183 | fmt = av_guess_format("mpeg", NULL, NULL); |
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| 184 | if (!fmt) { |
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| 185 | averrno = MOVIE_NO_SUITABLE_FORMAT; |
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| 186 | return false; |
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| 187 | } |
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| 188 | strcpy(dummy_filename + 2, "mpg"); |
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| 189 | } |
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| 190 | if (fmt->video_codec == AV_CODEC_ID_NONE) { |
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| 191 | averrno = MOVIE_AUDIO_ONLY; |
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| 192 | return false; |
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| 193 | } |
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| 194 | |
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| 195 | /* Allocate the output media context. */ |
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| 196 | oc = avformat_alloc_context(); |
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| 197 | if (!oc) { |
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| 198 | averrno = AVERROR(ENOMEM); |
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| 199 | return false; |
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| 200 | } |
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| 201 | oc->oformat = fmt; |
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| 202 | strcpy(oc->filename, dummy_filename); |
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| 203 | |
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| 204 | /* find the video encoder */ |
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| 205 | AVCodec *codec = avcodec_find_encoder(fmt->video_codec); |
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| 206 | if (!codec) { |
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| 207 | // FIXME : Erm - internal ffmpeg library problem? |
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| 208 | averrno = AVERROR(ENOMEM); |
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| 209 | return false; |
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| 210 | } |
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| 211 | |
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| 212 | // Add the video stream. |
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| 213 | video_st = avformat_new_stream(oc, codec); |
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| 214 | if (!video_st) { |
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| 215 | averrno = AVERROR(ENOMEM); |
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| 216 | return false; |
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| 217 | } |
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| 218 | |
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| 219 | // Set sample parameters. |
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| 220 | AVCodecContext *c = video_st->codec; |
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| 221 | c->bit_rate = 400000; |
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| 222 | /* Resolution must be a multiple of two. */ |
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| 223 | c->width = width; |
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| 224 | c->height = height; |
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| 225 | /* timebase: This is the fundamental unit of time (in seconds) in terms |
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| 226 | * of which frame timestamps are represented. For fixed-fps content, |
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| 227 | * timebase should be 1/framerate and timestamp increments should be |
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| 228 | * identical to 1. */ |
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| 229 | #if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(55, 44, 0) |
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| 230 | // Old way, which now causes deprecation warnings. |
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| 231 | c->time_base.den = 25; // Frames per second. |
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| 232 | c->time_base.num = 1; |
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| 233 | #else |
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| 234 | video_st->time_base.den = 25; // Frames per second. |
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| 235 | video_st->time_base.num = 1; |
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| 236 | c->time_base = video_st->time_base; |
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| 237 | #endif |
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| 238 | c->gop_size = 12; /* emit one intra frame every twelve frames at most */ |
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| 239 | c->pix_fmt = AV_PIX_FMT_YUV420P; |
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| 240 | c->rc_buffer_size = c->bit_rate * 4; // Enough for 4 seconds |
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| 241 | c->rc_max_rate = c->bit_rate * 2; |
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| 242 | // B frames are backwards predicted - they can improve compression, |
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| 243 | // but may slow encoding and decoding. |
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| 244 | // if (c->codec_id == AV_CODEC_ID_MPEG2VIDEO) { |
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| 245 | // c->max_b_frames = 2; |
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| 246 | // } |
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| 247 | |
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| 248 | /* Some formats want stream headers to be separate. */ |
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| 249 | if (oc->oformat->flags & AVFMT_GLOBALHEADER) |
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| 250 | c->flags |= CODEC_FLAG_GLOBAL_HEADER; |
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| 251 | |
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| 252 | int retval; |
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| 253 | #ifndef HAVE_AVFORMAT_WRITE_HEADER |
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| 254 | // Set the output parameters (must be done even if no parameters). |
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| 255 | retval = av_set_parameters(oc, NULL); |
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| 256 | if (retval < 0) { |
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| 257 | averrno = retval; |
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| 258 | return false; |
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| 259 | } |
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| 260 | #endif |
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| 261 | |
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| 262 | retval = avcodec_open2(c, NULL, NULL); |
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| 263 | if (retval < 0) { |
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| 264 | averrno = retval; |
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| 265 | return false; |
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| 266 | } |
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| 267 | |
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| 268 | #ifndef HAVE_AVCODEC_ENCODE_VIDEO2 |
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| 269 | outbuf = NULL; |
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| 270 | if (!(oc->oformat->flags & AVFMT_RAWPICTURE)) { |
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| 271 | outbuf = (unsigned char *)av_malloc(OUTBUF_SIZE); |
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| 272 | if (!outbuf) { |
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| 273 | averrno = AVERROR(ENOMEM); |
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| 274 | return false; |
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| 275 | } |
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| 276 | } |
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| 277 | #endif |
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| 278 | |
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| 279 | /* Allocate the encoded raw picture. */ |
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| 280 | frame = av_frame_alloc(); |
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| 281 | if (!frame) { |
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| 282 | averrno = AVERROR(ENOMEM); |
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| 283 | return false; |
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| 284 | } |
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| 285 | retval = av_image_alloc(frame->data, frame->linesize, |
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| 286 | c->width, c->height, c->pix_fmt, 1); |
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| 287 | if (retval < 0) { |
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| 288 | averrno = retval; |
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| 289 | return false; |
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| 290 | } |
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| 291 | |
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| 292 | if (c->pix_fmt != AV_PIX_FMT_YUV420P) { |
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| 293 | // FIXME need to allocate another frame for this case if we stop |
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| 294 | // hardcoding AV_PIX_FMT_YUV420P. |
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| 295 | abort(); |
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| 296 | } |
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| 297 | |
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| 298 | frame->format = c->pix_fmt; |
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| 299 | frame->width = c->width; |
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| 300 | frame->height = c->height; |
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| 301 | |
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| 302 | pixels = (unsigned char *)av_malloc(width * height * 6); |
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| 303 | if (!pixels) { |
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| 304 | averrno = AVERROR(ENOMEM); |
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| 305 | return false; |
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| 306 | } |
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| 307 | |
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| 308 | // Show the format we've ended up with (for debug purposes). |
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| 309 | // av_dump_format(oc, 0, fnm, 1); |
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| 310 | |
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| 311 | av_free(sws_ctx); |
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| 312 | sws_ctx = sws_getContext(width, height, AV_PIX_FMT_RGB24, |
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| 313 | width, height, c->pix_fmt, SWS_BICUBIC, |
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| 314 | NULL, NULL, NULL); |
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| 315 | if (sws_ctx == NULL) { |
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| 316 | fprintf(stderr, "Cannot initialize the conversion context!\n"); |
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| 317 | averrno = AVERROR(ENOMEM); |
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| 318 | return false; |
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| 319 | } |
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| 320 | |
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| 321 | if (!(fmt->flags & AVFMT_NOFILE)) { |
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| 322 | const int buf_size = 8192; |
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| 323 | void * buf = av_malloc(buf_size); |
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| 324 | oc->pb = avio_alloc_context(static_cast<uint8_t*>(buf), buf_size, 1, |
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[420cda9] | 325 | fh, NULL, write_packet, seek_stream); |
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[0aaa578] | 326 | if (!oc->pb) { |
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| 327 | averrno = AVERROR(ENOMEM); |
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| 328 | return false; |
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| 329 | } |
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| 330 | } |
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| 331 | |
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| 332 | // Write the stream header, if any. |
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| 333 | #ifdef HAVE_AVFORMAT_WRITE_HEADER |
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| 334 | retval = avformat_write_header(oc, NULL); |
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| 335 | #else |
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| 336 | retval = av_write_header(oc); |
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| 337 | #endif |
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| 338 | if (retval < 0) { |
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| 339 | averrno = retval; |
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| 340 | return false; |
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| 341 | } |
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| 342 | |
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| 343 | averrno = 0; |
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| 344 | return true; |
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| 345 | #else |
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| 346 | (void)fh; |
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| 347 | (void)ext; |
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| 348 | (void)width; |
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| 349 | (void)height; |
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| 350 | return false; |
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| 351 | #endif |
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| 352 | } |
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| 353 | |
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| 354 | unsigned char * MovieMaker::GetBuffer() const { |
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[40d1db36] | 355 | #ifdef WITH_FFMPEG |
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[0aaa578] | 356 | return pixels + GetWidth() * GetHeight() * 3; |
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| 357 | #else |
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| 358 | return NULL; |
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| 359 | #endif |
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| 360 | } |
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| 361 | |
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| 362 | int MovieMaker::GetWidth() const { |
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[40d1db36] | 363 | #ifdef WITH_FFMPEG |
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[0aaa578] | 364 | assert(video_st); |
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| 365 | AVCodecContext *c = video_st->codec; |
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| 366 | return c->width; |
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| 367 | #else |
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| 368 | return 0; |
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| 369 | #endif |
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| 370 | } |
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| 371 | |
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| 372 | int MovieMaker::GetHeight() const { |
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[40d1db36] | 373 | #ifdef WITH_FFMPEG |
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[0aaa578] | 374 | assert(video_st); |
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| 375 | AVCodecContext *c = video_st->codec; |
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| 376 | return c->height; |
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| 377 | #else |
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| 378 | return 0; |
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| 379 | #endif |
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| 380 | } |
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| 381 | |
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| 382 | bool MovieMaker::AddFrame() |
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| 383 | { |
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[40d1db36] | 384 | #ifdef WITH_FFMPEG |
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[0aaa578] | 385 | AVCodecContext * c = video_st->codec; |
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| 386 | |
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| 387 | if (c->pix_fmt != AV_PIX_FMT_YUV420P) { |
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| 388 | // FIXME convert... |
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| 389 | abort(); |
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| 390 | } |
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| 391 | |
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| 392 | int len = 3 * c->width; |
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| 393 | { |
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| 394 | // Flip image vertically |
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| 395 | int h = c->height; |
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| 396 | unsigned char * src = pixels + h * len; |
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| 397 | unsigned char * dest = src - len; |
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| 398 | while (h--) { |
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| 399 | memcpy(dest, src, len); |
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| 400 | src += len; |
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| 401 | dest -= len; |
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| 402 | } |
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| 403 | } |
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| 404 | sws_scale(sws_ctx, &pixels, &len, 0, c->height, frame->data, frame->linesize); |
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| 405 | |
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| 406 | if (oc->oformat->flags & AVFMT_RAWPICTURE) { |
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| 407 | abort(); |
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| 408 | } |
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| 409 | |
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| 410 | // Encode this frame. |
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| 411 | #ifdef HAVE_AVCODEC_ENCODE_VIDEO2 |
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| 412 | AVPacket pkt; |
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| 413 | int got_packet; |
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| 414 | av_init_packet(&pkt); |
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| 415 | pkt.data = NULL; |
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| 416 | |
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| 417 | int ret = avcodec_encode_video2(c, &pkt, frame, &got_packet); |
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| 418 | if (ret < 0) { |
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| 419 | averrno = ret; |
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| 420 | return false; |
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| 421 | } |
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| 422 | if (got_packet && pkt.size) { |
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| 423 | // Write the compressed frame to the media file. |
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| 424 | if (pkt.pts != int64_t(AV_NOPTS_VALUE)) { |
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| 425 | pkt.pts = av_rescale_q(pkt.pts, |
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| 426 | c->time_base, video_st->time_base); |
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| 427 | } |
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| 428 | if (pkt.dts != int64_t(AV_NOPTS_VALUE)) { |
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| 429 | pkt.dts = av_rescale_q(pkt.dts, |
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| 430 | c->time_base, video_st->time_base); |
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| 431 | } |
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| 432 | pkt.stream_index = video_st->index; |
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| 433 | |
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| 434 | /* Write the compressed frame to the media file. */ |
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| 435 | ret = av_interleaved_write_frame(oc, &pkt); |
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| 436 | if (ret < 0) { |
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| 437 | averrno = ret; |
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| 438 | return false; |
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| 439 | } |
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| 440 | } |
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| 441 | #else |
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| 442 | out_size = avcodec_encode_video(c, outbuf, OUTBUF_SIZE, frame); |
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| 443 | // outsize == 0 means that this frame has been buffered, so there's nothing |
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| 444 | // to write yet. |
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| 445 | if (out_size) { |
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| 446 | // Write the compressed frame to the media file. |
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| 447 | AVPacket pkt; |
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| 448 | av_init_packet(&pkt); |
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| 449 | |
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| 450 | if (c->coded_frame->pts != (int64_t)AV_NOPTS_VALUE) |
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| 451 | pkt.pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st->time_base); |
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| 452 | if (c->coded_frame->key_frame) |
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| 453 | pkt.flags |= AV_PKT_FLAG_KEY; |
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| 454 | pkt.stream_index = video_st->index; |
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| 455 | pkt.data = outbuf; |
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| 456 | pkt.size = out_size; |
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| 457 | |
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| 458 | /* Write the compressed frame to the media file. */ |
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| 459 | int ret = av_interleaved_write_frame(oc, &pkt); |
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| 460 | if (ret < 0) { |
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| 461 | averrno = ret; |
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| 462 | return false; |
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| 463 | } |
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| 464 | } |
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| 465 | #endif |
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| 466 | #endif |
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| 467 | return true; |
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| 468 | } |
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| 469 | |
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| 470 | bool |
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| 471 | MovieMaker::Close() |
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| 472 | { |
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[40d1db36] | 473 | #ifdef WITH_FFMPEG |
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[0aaa578] | 474 | if (video_st && averrno == 0) { |
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| 475 | // No more frames to compress. The codec may have a few frames |
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| 476 | // buffered if we're using B frames, so write those too. |
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| 477 | AVCodecContext * c = video_st->codec; |
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| 478 | |
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| 479 | #ifdef HAVE_AVCODEC_ENCODE_VIDEO2 |
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| 480 | while (1) { |
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| 481 | AVPacket pkt; |
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| 482 | int got_packet; |
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| 483 | av_init_packet(&pkt); |
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| 484 | pkt.data = NULL; |
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| 485 | pkt.size = 0; |
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| 486 | |
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| 487 | int ret = avcodec_encode_video2(c, &pkt, NULL, &got_packet); |
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| 488 | if (ret < 0) { |
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| 489 | release(); |
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| 490 | averrno = ret; |
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| 491 | return false; |
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| 492 | } |
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| 493 | if (!got_packet) break; |
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| 494 | if (!pkt.size) continue; |
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| 495 | |
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| 496 | // Write the compressed frame to the media file. |
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| 497 | if (pkt.pts != int64_t(AV_NOPTS_VALUE)) { |
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| 498 | pkt.pts = av_rescale_q(pkt.pts, |
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| 499 | c->time_base, video_st->time_base); |
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| 500 | } |
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| 501 | if (pkt.dts != int64_t(AV_NOPTS_VALUE)) { |
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| 502 | pkt.dts = av_rescale_q(pkt.dts, |
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| 503 | c->time_base, video_st->time_base); |
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| 504 | } |
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| 505 | pkt.stream_index = video_st->index; |
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| 506 | |
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| 507 | /* Write the compressed frame to the media file. */ |
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| 508 | ret = av_interleaved_write_frame(oc, &pkt); |
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| 509 | if (ret < 0) { |
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| 510 | release(); |
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| 511 | averrno = ret; |
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| 512 | return false; |
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| 513 | } |
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| 514 | } |
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| 515 | #else |
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| 516 | while (out_size) { |
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| 517 | out_size = avcodec_encode_video(c, outbuf, OUTBUF_SIZE, NULL); |
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| 518 | if (out_size) { |
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| 519 | // Write the compressed frame to the media file. |
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| 520 | AVPacket pkt; |
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| 521 | av_init_packet(&pkt); |
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| 522 | |
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| 523 | if (c->coded_frame->pts != (int64_t)AV_NOPTS_VALUE) |
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| 524 | pkt.pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st->time_base); |
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| 525 | if (c->coded_frame->key_frame) |
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| 526 | pkt.flags |= AV_PKT_FLAG_KEY; |
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| 527 | pkt.stream_index = video_st->index; |
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| 528 | pkt.data = outbuf; |
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| 529 | pkt.size = out_size; |
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| 530 | |
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| 531 | /* write the compressed frame in the media file */ |
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| 532 | int ret = av_interleaved_write_frame(oc, &pkt); |
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| 533 | if (ret < 0) { |
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| 534 | release(); |
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| 535 | averrno = ret; |
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| 536 | return false; |
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| 537 | } |
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| 538 | } |
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| 539 | } |
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| 540 | #endif |
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| 541 | |
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| 542 | av_write_trailer(oc); |
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| 543 | } |
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| 544 | |
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| 545 | release(); |
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| 546 | #endif |
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| 547 | return true; |
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| 548 | } |
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| 549 | |
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[40d1db36] | 550 | #ifdef WITH_FFMPEG |
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[0aaa578] | 551 | void |
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| 552 | MovieMaker::release() |
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| 553 | { |
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| 554 | if (video_st) { |
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| 555 | // Close codec. |
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| 556 | avcodec_close(video_st->codec); |
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| 557 | video_st = NULL; |
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| 558 | } |
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| 559 | |
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| 560 | if (frame) { |
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| 561 | av_frame_free(&frame); |
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| 562 | } |
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| 563 | av_free(pixels); |
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| 564 | pixels = NULL; |
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| 565 | av_free(outbuf); |
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| 566 | outbuf = NULL; |
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| 567 | av_free(sws_ctx); |
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| 568 | sws_ctx = NULL; |
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| 569 | |
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| 570 | if (oc) { |
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| 571 | // Free the streams. |
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| 572 | for (size_t i = 0; i < oc->nb_streams; ++i) { |
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| 573 | av_freep(&oc->streams[i]->codec); |
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| 574 | av_freep(&oc->streams[i]); |
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| 575 | } |
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| 576 | |
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| 577 | if (!(oc->oformat->flags & AVFMT_NOFILE)) { |
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| 578 | // Release the AVIOContext. |
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| 579 | av_free(oc->pb); |
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| 580 | } |
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| 581 | |
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| 582 | // Free the stream. |
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| 583 | av_free(oc); |
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| 584 | oc = NULL; |
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| 585 | } |
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| 586 | if (fh_to_close) { |
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| 587 | fclose(fh_to_close); |
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| 588 | fh_to_close = NULL; |
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| 589 | } |
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| 590 | } |
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| 591 | #endif |
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| 592 | |
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| 593 | MovieMaker::~MovieMaker() |
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| 594 | { |
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[40d1db36] | 595 | #ifdef WITH_FFMPEG |
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[0aaa578] | 596 | release(); |
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| 597 | #endif |
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| 598 | } |
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| 599 | |
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| 600 | const char * |
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| 601 | MovieMaker::get_error_string() const |
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| 602 | { |
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[40d1db36] | 603 | #ifdef WITH_FFMPEG |
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[0aaa578] | 604 | switch (averrno) { |
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| 605 | case AVERROR(EIO): |
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| 606 | return "I/O error"; |
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| 607 | case AVERROR(EDOM): |
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| 608 | return "Number syntax expected in filename"; |
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| 609 | case AVERROR_INVALIDDATA: |
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| 610 | /* same as AVERROR_UNKNOWN: return "unknown error"; */ |
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| 611 | return "invalid data found"; |
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| 612 | case AVERROR(ENOMEM): |
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| 613 | return "not enough memory"; |
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| 614 | case AVERROR(EILSEQ): |
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| 615 | return "unknown format"; |
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| 616 | case AVERROR(ENOSYS): |
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| 617 | return "Operation not supported"; |
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| 618 | case AVERROR(ENOENT): |
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| 619 | return "No such file or directory"; |
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| 620 | case AVERROR_EOF: |
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| 621 | return "End of file"; |
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| 622 | case AVERROR_PATCHWELCOME: |
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| 623 | return "Not implemented in FFmpeg"; |
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| 624 | case 0: |
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| 625 | return "No error"; |
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| 626 | case MOVIE_NO_SUITABLE_FORMAT: |
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| 627 | return "Couldn't find a suitable output format"; |
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| 628 | case MOVIE_AUDIO_ONLY: |
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| 629 | return "Audio-only format specified"; |
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| 630 | case MOVIE_FILENAME_TOO_LONG: |
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| 631 | return "Filename too long"; |
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| 632 | } |
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| 633 | #endif |
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| 634 | return "Unknown error"; |
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| 635 | } |
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