[6a4cdcb6] | 1 | // |
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| 2 | // moviemaker.cc |
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| 3 | // |
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| 4 | // Class for writing movies from Aven. |
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| 5 | // |
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[64d06c0] | 6 | // Copyright (C) 2004,2011,2012,2013 Olly Betts |
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[6a4cdcb6] | 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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[ecbc6c18] | 20 | // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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[6a4cdcb6] | 21 | // |
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| 22 | |
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[cc9e7a06] | 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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[6a4cdcb6] | 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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[cc9e7a06] | 53 | #define __STDC_CONSTANT_MACROS |
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| 54 | |
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[1805274] | 55 | #include <assert.h> |
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[6a4cdcb6] | 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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[cc9e7a06] | 61 | #ifdef HAVE_LIBAVFORMAT_AVFORMAT_H |
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| 62 | extern "C" { |
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[008f2f3] | 63 | # include <libavutil/mathematics.h> |
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[64d06c0] | 64 | # include <libavformat/avformat.h> |
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[86d8ee5] | 65 | # include <libswscale/swscale.h> |
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[cc9e7a06] | 66 | } |
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[7831cef] | 67 | # ifndef AV_PKT_FLAG_KEY |
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| 68 | # define AV_PKT_FLAG_KEY PKT_FLAG_KEY |
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| 69 | # endif |
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| 70 | # ifndef HAVE_AV_GUESS_FORMAT |
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| 71 | # define av_guess_format guess_format |
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| 72 | # endif |
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| 73 | # ifndef HAVE_AVIO_OPEN |
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| 74 | # define avio_open url_fopen |
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| 75 | # endif |
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| 76 | # ifndef HAVE_AVIO_CLOSE |
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| 77 | # define avio_close url_fclose |
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| 78 | # endif |
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[cc69cf5] | 79 | # ifndef HAVE_AVCODEC_FREE_FRAME |
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| 80 | static inline void avcodec_free_frame(AVFrame * frame) { |
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| 81 | free(frame->data[0]); |
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| 82 | free(frame); |
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| 83 | } |
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| 84 | # endif |
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[86d8ee5] | 85 | # ifndef HAVE_AVCODEC_OPEN2 |
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| 86 | // We always pass NULL for OPTS below. |
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| 87 | # define avcodec_open2(CTX, CODEC, OPTS) avcodec_open(CTX, CODEC) |
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| 88 | # endif |
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| 89 | # ifndef HAVE_AVFORMAT_NEW_STREAM |
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| 90 | // We always pass NULL for CODEC below. |
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| 91 | # define avformat_new_stream(S, CODEC) av_new_stream(S, 0) |
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| 92 | # endif |
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[7831cef] | 93 | # if !HAVE_DECL_AVMEDIA_TYPE_VIDEO |
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| 94 | # define AVMEDIA_TYPE_VIDEO CODEC_TYPE_VIDEO |
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| 95 | # endif |
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[64d06c0] | 96 | # if !HAVE_DECL_AVCODEC_ID_NONE |
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| 97 | # define AVCODEC_ID_NONE CODEC_ID_NONE |
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| 98 | # endif |
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| 99 | # if !HAVE_DECL_AV_PIX_FMT_YUV420P |
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| 100 | # define AV_PIX_FMT_YUV420P PIX_FMT_YUV420P |
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| 101 | # endif |
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| 102 | # ifndef AVIO_FLAG_WRITE |
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| 103 | # define AVIO_FLAG_WRITE URL_WRONLY |
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| 104 | # endif |
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[6a4cdcb6] | 105 | #endif |
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| 106 | |
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[091069f] | 107 | enum { |
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| 108 | MOVIE_NO_SUITABLE_FORMAT = 1, |
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| 109 | MOVIE_AUDIO_ONLY, |
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| 110 | MOVIE_FILENAME_TOO_LONG, |
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| 111 | MOVIE_NOT_ENABLED |
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| 112 | }; |
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| 113 | |
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[1805274] | 114 | const int OUTBUF_SIZE = 200000; |
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[6a4cdcb6] | 115 | |
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[1805274] | 116 | MovieMaker::MovieMaker() |
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[64d06c0] | 117 | : oc(0), video_st(0), frame(0), outbuf(0), pixels(0), sws_ctx(0), averrno(0) |
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[6a4cdcb6] | 118 | { |
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[cc9e7a06] | 119 | #ifdef HAVE_LIBAVFORMAT_AVFORMAT_H |
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[6a4cdcb6] | 120 | static bool initialised_ffmpeg = false; |
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[1805274] | 121 | if (initialised_ffmpeg) return; |
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[6a4cdcb6] | 122 | |
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[1805274] | 123 | // FIXME: register only the codec(s) we want to use... |
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[64d06c0] | 124 | avcodec_register_all(); |
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[1805274] | 125 | av_register_all(); |
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[6a4cdcb6] | 126 | |
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[1805274] | 127 | initialised_ffmpeg = true; |
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| 128 | #endif |
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| 129 | } |
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| 130 | |
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| 131 | bool MovieMaker::Open(const char *fnm, int width, int height) |
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| 132 | { |
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[cc9e7a06] | 133 | #ifdef HAVE_LIBAVFORMAT_AVFORMAT_H |
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[7831cef] | 134 | AVOutputFormat * fmt = av_guess_format(NULL, fnm, NULL); |
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[1805274] | 135 | if (!fmt) { |
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| 136 | // We couldn't deduce the output format from file extension so default |
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| 137 | // to MPEG. |
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[7831cef] | 138 | fmt = av_guess_format("mpeg", NULL, NULL); |
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[1805274] | 139 | if (!fmt) { |
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[091069f] | 140 | averrno = MOVIE_NO_SUITABLE_FORMAT; |
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[1805274] | 141 | return false; |
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| 142 | } |
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| 143 | } |
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[64d06c0] | 144 | if (fmt->video_codec == AVCODEC_ID_NONE) { |
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[091069f] | 145 | averrno = MOVIE_AUDIO_ONLY; |
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[1805274] | 146 | return false; |
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[6a4cdcb6] | 147 | } |
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| 148 | |
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[64d06c0] | 149 | /* Allocate the output media context. */ |
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[6ed625e] | 150 | oc = avformat_alloc_context(); |
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[1805274] | 151 | if (!oc) { |
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[63621a7] | 152 | averrno = AVERROR(ENOMEM); |
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[1805274] | 153 | return false; |
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[6a4cdcb6] | 154 | } |
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[1805274] | 155 | oc->oformat = fmt; |
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| 156 | if (strlen(fnm) >= sizeof(oc->filename)) { |
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[091069f] | 157 | averrno = MOVIE_FILENAME_TOO_LONG; |
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[1805274] | 158 | return false; |
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| 159 | } |
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| 160 | strcpy(oc->filename, fnm); |
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[6a4cdcb6] | 161 | |
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[64d06c0] | 162 | /* find the video encoder */ |
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| 163 | AVCodec *codec = avcodec_find_encoder(fmt->video_codec); |
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| 164 | if (!codec) { |
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| 165 | // FIXME : Erm - internal ffmpeg library problem? |
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[63621a7] | 166 | averrno = AVERROR(ENOMEM); |
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[1805274] | 167 | return false; |
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[6a4cdcb6] | 168 | } |
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| 169 | |
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[64d06c0] | 170 | // Add the video stream. |
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| 171 | video_st = avformat_new_stream(oc, codec); |
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| 172 | if (!video_st) { |
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| 173 | averrno = AVERROR(ENOMEM); |
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| 174 | return false; |
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| 175 | } |
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[6a4cdcb6] | 176 | |
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| 177 | // Set sample parameters. |
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[64d06c0] | 178 | AVCodecContext *c = video_st->codec; |
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[6a4cdcb6] | 179 | c->bit_rate = 400000; |
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[64d06c0] | 180 | /* Resolution must be a multiple of two. */ |
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[1805274] | 181 | c->width = width; |
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| 182 | c->height = height; |
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[64d06c0] | 183 | /* timebase: This is the fundamental unit of time (in seconds) in terms |
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| 184 | * of which frame timestamps are represented. For fixed-fps content, |
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| 185 | * timebase should be 1/framerate and timestamp increments should be |
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| 186 | * identical to 1. */ |
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[cc9e7a06] | 187 | c->time_base.den = 25; // Frames per second. |
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[64d06c0] | 188 | c->time_base.num = 1; |
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| 189 | c->gop_size = 12; /* emit one intra frame every twelve frames at most */ |
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| 190 | c->pix_fmt = AV_PIX_FMT_YUV420P; |
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[1805274] | 191 | // B frames are backwards predicted - they can improve compression, |
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| 192 | // but may slow encoding and decoding. |
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[64d06c0] | 193 | // if (c->codec_id == AV_CODEC_ID_MPEG2VIDEO) { |
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| 194 | // c->max_b_frames = 2; |
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| 195 | // } |
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[6a4cdcb6] | 196 | |
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[64d06c0] | 197 | /* Some formats want stream headers to be separate. */ |
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[cc9e7a06] | 198 | if (oc->oformat->flags & AVFMT_GLOBALHEADER) |
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| 199 | c->flags |= CODEC_FLAG_GLOBAL_HEADER; |
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| 200 | |
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[7831cef] | 201 | int retval; |
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| 202 | #ifndef HAVE_AVFORMAT_WRITE_HEADER |
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[1805274] | 203 | // Set the output parameters (must be done even if no parameters). |
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[7831cef] | 204 | retval = av_set_parameters(oc, NULL); |
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[091069f] | 205 | if (retval < 0) { |
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| 206 | averrno = retval; |
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[1805274] | 207 | return false; |
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| 208 | } |
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[7831cef] | 209 | #endif |
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[1805274] | 210 | |
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[64d06c0] | 211 | retval = avcodec_open2(c, NULL, NULL); |
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[091069f] | 212 | if (retval < 0) { |
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| 213 | averrno = retval; |
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[1805274] | 214 | return false; |
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[6a4cdcb6] | 215 | } |
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[1805274] | 216 | |
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[64d06c0] | 217 | #ifndef HAVE_AVCODEC_ENCODE_VIDEO2 |
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| 218 | outbuf = NULL; |
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| 219 | if (!(oc->oformat->flags & AVFMT_RAWPICTURE)) { |
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[cc9e7a06] | 220 | outbuf = (unsigned char *)malloc(OUTBUF_SIZE); |
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| 221 | if (!outbuf) { |
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[63621a7] | 222 | averrno = AVERROR(ENOMEM); |
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[cc9e7a06] | 223 | return false; |
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| 224 | } |
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[6a4cdcb6] | 225 | } |
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[64d06c0] | 226 | #endif |
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[1805274] | 227 | |
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[64d06c0] | 228 | /* Allocate the encoded raw picture. */ |
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[6a4cdcb6] | 229 | frame = avcodec_alloc_frame(); |
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[cc9e7a06] | 230 | if (!frame) { |
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[63621a7] | 231 | averrno = AVERROR(ENOMEM); |
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[1805274] | 232 | return false; |
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[6a4cdcb6] | 233 | } |
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[64d06c0] | 234 | retval = avpicture_alloc((AVPicture *)frame, c->pix_fmt, c->width, c->height); |
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| 235 | if (retval < 0) { |
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| 236 | averrno = retval; |
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[1805274] | 237 | return false; |
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[6a4cdcb6] | 238 | } |
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[cc9e7a06] | 239 | |
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| 240 | if (c->pix_fmt != PIX_FMT_YUV420P) { |
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| 241 | // FIXME need to allocate another frame for this case if we stop |
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| 242 | // hardcoding PIX_FMT_YUV420P. |
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| 243 | abort(); |
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| 244 | } |
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[6a4cdcb6] | 245 | |
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| 246 | pixels = (unsigned char *)malloc(width * height * 6); |
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| 247 | if (!pixels) { |
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[63621a7] | 248 | averrno = AVERROR(ENOMEM); |
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[1805274] | 249 | return false; |
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[6a4cdcb6] | 250 | } |
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[1805274] | 251 | |
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[64d06c0] | 252 | // Show the format we've ended up with (for debug purposes). |
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| 253 | // av_dump_format(oc, 0, fnm, 1); |
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| 254 | |
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| 255 | av_free(sws_ctx); |
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| 256 | sws_ctx = sws_getContext(width, height, PIX_FMT_RGB24, |
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| 257 | width, height, c->pix_fmt, SWS_BICUBIC, |
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| 258 | NULL, NULL, NULL); |
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| 259 | if (sws_ctx == NULL) { |
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| 260 | fprintf(stderr, "Cannot initialize the conversion context!\n"); |
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| 261 | averrno = AVERROR(ENOMEM); |
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[1805274] | 262 | return false; |
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| 263 | } |
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| 264 | |
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[64d06c0] | 265 | if (!(fmt->flags & AVFMT_NOFILE)) { |
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| 266 | retval = avio_open(&oc->pb, fnm, AVIO_FLAG_WRITE); |
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| 267 | if (retval < 0) { |
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| 268 | averrno = retval; |
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| 269 | return false; |
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| 270 | } |
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| 271 | } |
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| 272 | |
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[1805274] | 273 | // Write the stream header, if any. |
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[7831cef] | 274 | #ifdef HAVE_AVFORMAT_WRITE_HEADER |
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| 275 | retval = avformat_write_header(oc, NULL); |
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| 276 | #else |
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[091069f] | 277 | retval = av_write_header(oc); |
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[7831cef] | 278 | #endif |
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[091069f] | 279 | if (retval < 0) { |
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| 280 | averrno = retval; |
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[1805274] | 281 | return false; |
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| 282 | } |
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[9e516d0d] | 283 | |
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[091069f] | 284 | averrno = 0; |
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[1805274] | 285 | return true; |
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[6a4cdcb6] | 286 | #else |
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[6e22f11] | 287 | (void)fnm; |
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| 288 | (void)width; |
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| 289 | (void)height; |
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[091069f] | 290 | averrno = MOVIE_NOT_ENABLED; |
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[6a4cdcb6] | 291 | return false; |
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| 292 | #endif |
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| 293 | } |
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| 294 | |
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| 295 | unsigned char * MovieMaker::GetBuffer() const { |
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[eac4514] | 296 | #ifdef HAVE_LIBAVFORMAT_AVFORMAT_H |
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[64d06c0] | 297 | AVCodecContext * c = video_st->codec; |
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[9e516d0d] | 298 | return pixels + c->height * c->width * 3; |
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[eac4514] | 299 | #else |
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| 300 | return NULL; |
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| 301 | #endif |
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[6a4cdcb6] | 302 | } |
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| 303 | |
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| 304 | int MovieMaker::GetWidth() const { |
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[64d06c0] | 305 | assert(video_st); |
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[cc9e7a06] | 306 | #ifdef HAVE_LIBAVFORMAT_AVFORMAT_H |
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[64d06c0] | 307 | AVCodecContext *c = video_st->codec; |
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[6a4cdcb6] | 308 | return c->width; |
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[1805274] | 309 | #else |
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| 310 | return 0; |
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| 311 | #endif |
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[6a4cdcb6] | 312 | } |
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| 313 | |
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| 314 | int MovieMaker::GetHeight() const { |
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[64d06c0] | 315 | assert(video_st); |
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[cc9e7a06] | 316 | #ifdef HAVE_LIBAVFORMAT_AVFORMAT_H |
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[64d06c0] | 317 | AVCodecContext *c = video_st->codec; |
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[6a4cdcb6] | 318 | return c->height; |
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[1805274] | 319 | #else |
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| 320 | return 0; |
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| 321 | #endif |
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[6a4cdcb6] | 322 | } |
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| 323 | |
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[98fd937] | 324 | bool MovieMaker::AddFrame() |
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[6a4cdcb6] | 325 | { |
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[cc9e7a06] | 326 | #ifdef HAVE_LIBAVFORMAT_AVFORMAT_H |
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[64d06c0] | 327 | AVCodecContext * c = video_st->codec; |
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[cc9e7a06] | 328 | |
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| 329 | if (c->pix_fmt != PIX_FMT_YUV420P) { |
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| 330 | // FIXME convert... |
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| 331 | abort(); |
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| 332 | } |
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[1805274] | 333 | |
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[9e516d0d] | 334 | int len = 3 * c->width; |
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[fed3713] | 335 | { |
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| 336 | // Flip image vertically |
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| 337 | int h = c->height; |
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| 338 | unsigned char * src = pixels + h * len; |
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| 339 | unsigned char * dest = src - len; |
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| 340 | while (h--) { |
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| 341 | memcpy(dest, src, len); |
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| 342 | src += len; |
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| 343 | dest -= len; |
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| 344 | } |
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[6a4cdcb6] | 345 | } |
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[9e516d0d] | 346 | sws_scale(sws_ctx, &pixels, &len, 0, c->height, frame->data, frame->linesize); |
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[6a4cdcb6] | 347 | |
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[cc9e7a06] | 348 | if (oc->oformat->flags & AVFMT_RAWPICTURE) { |
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| 349 | abort(); |
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| 350 | } |
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[6a4cdcb6] | 351 | |
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[1805274] | 352 | // Encode this frame. |
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[64d06c0] | 353 | #ifdef HAVE_AVCODEC_ENCODE_VIDEO2 |
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| 354 | AVPacket pkt = { 0 }; |
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| 355 | int got_packet; |
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| 356 | av_init_packet(&pkt); |
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| 357 | |
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| 358 | int ret = avcodec_encode_video2(c, &pkt, frame, &got_packet); |
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| 359 | if (ret < 0) { |
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[98fd937] | 360 | averrno = ret; |
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| 361 | return false; |
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[64d06c0] | 362 | } |
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| 363 | if (got_packet && pkt.size) { |
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| 364 | // Write the compressed frame to the media file. |
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| 365 | if (pkt.pts != AV_NOPTS_VALUE) { |
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| 366 | pkt.pts = av_rescale_q(pkt.pts, |
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| 367 | c->time_base, video_st->time_base); |
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| 368 | } |
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| 369 | if (pkt.dts != AV_NOPTS_VALUE) { |
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| 370 | pkt.dts = av_rescale_q(pkt.dts, |
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| 371 | c->time_base, video_st->time_base); |
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| 372 | } |
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| 373 | pkt.stream_index = video_st->index; |
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| 374 | |
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| 375 | /* Write the compressed frame to the media file. */ |
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[98fd937] | 376 | ret = av_interleaved_write_frame(oc, &pkt); |
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| 377 | if (ret < 0) { |
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| 378 | averrno = ret; |
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| 379 | return false; |
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[64d06c0] | 380 | } |
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| 381 | } |
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| 382 | #else |
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[6a4cdcb6] | 383 | out_size = avcodec_encode_video(c, outbuf, OUTBUF_SIZE, frame); |
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[1805274] | 384 | // outsize == 0 means that this frame has been buffered, so there's nothing |
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| 385 | // to write yet. |
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[cc9e7a06] | 386 | if (out_size) { |
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[1805274] | 387 | // Write the compressed frame to the media file. |
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[cc9e7a06] | 388 | AVPacket pkt; |
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| 389 | av_init_packet(&pkt); |
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| 390 | |
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[63621a7] | 391 | if (c->coded_frame->pts != (int64_t)AV_NOPTS_VALUE) |
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[64d06c0] | 392 | pkt.pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st->time_base); |
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[cc9e7a06] | 393 | if (c->coded_frame->key_frame) |
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| 394 | pkt.flags |= AV_PKT_FLAG_KEY; |
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[64d06c0] | 395 | pkt.stream_index = video_st->index; |
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[cc9e7a06] | 396 | pkt.data = outbuf; |
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| 397 | pkt.size = out_size; |
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| 398 | |
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[64d06c0] | 399 | /* Write the compressed frame to the media file. */ |
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[98fd937] | 400 | int ret = av_interleaved_write_frame(oc, &pkt); |
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| 401 | if (ret < 0) { |
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| 402 | averrno = ret; |
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| 403 | return false; |
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[1805274] | 404 | } |
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[6a4cdcb6] | 405 | } |
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| 406 | #endif |
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[64d06c0] | 407 | #endif |
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[98fd937] | 408 | return true; |
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[6a4cdcb6] | 409 | } |
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| 410 | |
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[98fd937] | 411 | bool |
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| 412 | MovieMaker::Close() |
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[6a4cdcb6] | 413 | { |
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[cc9e7a06] | 414 | #ifdef HAVE_LIBAVFORMAT_AVFORMAT_H |
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[64d06c0] | 415 | if (video_st && averrno == 0) { |
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[1805274] | 416 | // No more frames to compress. The codec may have a few frames |
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| 417 | // buffered if we're using B frames, so write those too. |
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[64d06c0] | 418 | AVCodecContext * c = video_st->codec; |
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[1805274] | 419 | |
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[64d06c0] | 420 | #ifdef HAVE_AVCODEC_ENCODE_VIDEO2 |
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| 421 | while (1) { |
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| 422 | AVPacket pkt = { 0 }; |
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| 423 | int got_packet; |
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| 424 | av_init_packet(&pkt); |
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| 425 | |
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| 426 | int ret = avcodec_encode_video2(c, &pkt, NULL, &got_packet); |
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| 427 | if (ret < 0) { |
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[98fd937] | 428 | release(); |
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| 429 | averrno = ret; |
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| 430 | return false; |
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[64d06c0] | 431 | } |
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| 432 | if (!got_packet) break; |
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| 433 | if (!pkt.size) continue; |
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| 434 | |
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| 435 | // Write the compressed frame to the media file. |
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| 436 | if (pkt.pts != AV_NOPTS_VALUE) { |
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| 437 | pkt.pts = av_rescale_q(pkt.pts, |
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| 438 | c->time_base, video_st->time_base); |
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| 439 | } |
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| 440 | if (pkt.dts != AV_NOPTS_VALUE) { |
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| 441 | pkt.dts = av_rescale_q(pkt.dts, |
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| 442 | c->time_base, video_st->time_base); |
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| 443 | } |
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| 444 | pkt.stream_index = video_st->index; |
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| 445 | |
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| 446 | /* Write the compressed frame to the media file. */ |
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[98fd937] | 447 | ret = av_interleaved_write_frame(oc, &pkt); |
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| 448 | if (ret < 0) { |
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| 449 | release(); |
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| 450 | averrno = ret; |
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| 451 | return false; |
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[64d06c0] | 452 | } |
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| 453 | } |
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| 454 | #else |
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[1805274] | 455 | while (out_size) { |
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| 456 | out_size = avcodec_encode_video(c, outbuf, OUTBUF_SIZE, NULL); |
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| 457 | if (out_size) { |
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[cc9e7a06] | 458 | // Write the compressed frame to the media file. |
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| 459 | AVPacket pkt; |
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| 460 | av_init_packet(&pkt); |
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| 461 | |
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[63621a7] | 462 | if (c->coded_frame->pts != (int64_t)AV_NOPTS_VALUE) |
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[64d06c0] | 463 | pkt.pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st->time_base); |
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[cc9e7a06] | 464 | if (c->coded_frame->key_frame) |
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| 465 | pkt.flags |= AV_PKT_FLAG_KEY; |
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[64d06c0] | 466 | pkt.stream_index = video_st->index; |
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[cc9e7a06] | 467 | pkt.data = outbuf; |
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| 468 | pkt.size = out_size; |
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| 469 | |
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| 470 | /* write the compressed frame in the media file */ |
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[98fd937] | 471 | int ret = av_interleaved_write_frame(oc, &pkt); |
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| 472 | if (ret < 0) { |
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| 473 | release(); |
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| 474 | averrno = ret; |
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| 475 | return false; |
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[1805274] | 476 | } |
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| 477 | } |
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[6a4cdcb6] | 478 | } |
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[64d06c0] | 479 | #endif |
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[6a4cdcb6] | 480 | |
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[cc9e7a06] | 481 | av_write_trailer(oc); |
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[091069f] | 482 | } |
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[cc9e7a06] | 483 | |
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[98fd937] | 484 | release(); |
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| 485 | #endif |
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| 486 | return true; |
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| 487 | } |
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| 488 | |
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| 489 | void |
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| 490 | MovieMaker::release() |
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| 491 | { |
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| 492 | #ifdef HAVE_LIBAVFORMAT_AVFORMAT_H |
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[64d06c0] | 493 | if (video_st) { |
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[1805274] | 494 | // Close codec. |
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[64d06c0] | 495 | avcodec_close(video_st->codec); |
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[98fd937] | 496 | video_st = NULL; |
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[6a4cdcb6] | 497 | } |
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| 498 | |
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[cc9e7a06] | 499 | if (frame) { |
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[cc69cf5] | 500 | avcodec_free_frame(frame); |
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[98fd937] | 501 | frame = NULL; |
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[cc9e7a06] | 502 | } |
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[6a4cdcb6] | 503 | free(pixels); |
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[98fd937] | 504 | pixels = NULL; |
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[64d06c0] | 505 | free(outbuf); |
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[98fd937] | 506 | outbuf = NULL; |
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[9e516d0d] | 507 | av_free(sws_ctx); |
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[98fd937] | 508 | sws_ctx = NULL; |
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[1805274] | 509 | |
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| 510 | if (oc) { |
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| 511 | // Free the streams. |
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[cc9e7a06] | 512 | for (size_t i = 0; i < oc->nb_streams; ++i) { |
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| 513 | av_freep(&oc->streams[i]->codec); |
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[1805274] | 514 | av_freep(&oc->streams[i]); |
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| 515 | } |
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| 516 | |
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[cc9e7a06] | 517 | if (!(oc->oformat->flags & AVFMT_NOFILE)) { |
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| 518 | // Close the output file. |
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[7831cef] | 519 | avio_close(oc->pb); |
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[cc9e7a06] | 520 | } |
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[1805274] | 521 | |
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| 522 | // Free the stream. |
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[6ed625e] | 523 | av_free(oc); |
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[98fd937] | 524 | oc = NULL; |
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[1805274] | 525 | } |
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[6a4cdcb6] | 526 | #endif |
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| 527 | } |
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[091069f] | 528 | |
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[98fd937] | 529 | MovieMaker::~MovieMaker() |
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| 530 | { |
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| 531 | release(); |
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| 532 | } |
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| 533 | |
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[091069f] | 534 | const char * |
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| 535 | MovieMaker::get_error_string() const |
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| 536 | { |
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[eac4514] | 537 | #ifdef HAVE_LIBAVFORMAT_AVFORMAT_H |
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[091069f] | 538 | switch (averrno) { |
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[63621a7] | 539 | case AVERROR(EIO): |
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[091069f] | 540 | return "I/O error"; |
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[63621a7] | 541 | case AVERROR(EDOM): |
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[091069f] | 542 | return "Number syntax expected in filename"; |
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| 543 | case AVERROR_INVALIDDATA: |
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| 544 | /* same as AVERROR_UNKNOWN: return "unknown error"; */ |
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| 545 | return "invalid data found"; |
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[63621a7] | 546 | case AVERROR(ENOMEM): |
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[091069f] | 547 | return "not enough memory"; |
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[63621a7] | 548 | case AVERROR(EILSEQ): |
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[091069f] | 549 | return "unknown format"; |
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[63621a7] | 550 | case AVERROR(ENOSYS): |
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[091069f] | 551 | return "Operation not supported"; |
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[63621a7] | 552 | case AVERROR(ENOENT): |
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[091069f] | 553 | return "No such file or directory"; |
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| 554 | case AVERROR_EOF: |
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| 555 | return "End of file"; |
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| 556 | case AVERROR_PATCHWELCOME: |
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| 557 | return "Not implemented in FFmpeg"; |
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| 558 | case 0: |
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| 559 | return "No error"; |
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| 560 | case MOVIE_NO_SUITABLE_FORMAT: |
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| 561 | return "Couldn't find a suitable output format"; |
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| 562 | case MOVIE_AUDIO_ONLY: |
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| 563 | return "Audio-only format specified"; |
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| 564 | case MOVIE_FILENAME_TOO_LONG: |
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| 565 | return "Filename too long"; |
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| 566 | case MOVIE_NOT_ENABLED: |
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| 567 | return "Movie export support not included"; |
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| 568 | } |
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| 569 | return "Unknown error"; |
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[eac4514] | 570 | #else |
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| 571 | return "Movie generation support code not present"; |
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| 572 | #endif |
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[091069f] | 573 | } |
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