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