Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6148 | serge | 1 | /* |
| 2 | * Flash Compatible Streaming Format muxer |
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| 3 | * Copyright (c) 2000 Fabrice Bellard |
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| 4 | * Copyright (c) 2003 Tinic Uro |
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| 5 | * |
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| 6 | * This file is part of FFmpeg. |
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| 7 | * |
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| 8 | * FFmpeg is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU Lesser General Public |
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| 10 | * License as published by the Free Software Foundation; either |
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| 11 | * version 2.1 of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * FFmpeg 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 GNU |
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| 16 | * Lesser 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 Lesser General Public |
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| 19 | * License along with FFmpeg; if not, write to the Free Software |
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| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 21 | */ |
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| 22 | |||
| 23 | #include "libavcodec/put_bits.h" |
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| 24 | #include "libavutil/avassert.h" |
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| 25 | #include "avformat.h" |
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| 26 | #include "swf.h" |
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| 27 | |||
| 28 | static void put_swf_tag(AVFormatContext *s, int tag) |
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| 29 | { |
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| 30 | SWFContext *swf = s->priv_data; |
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| 31 | AVIOContext *pb = s->pb; |
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| 32 | |||
| 33 | swf->tag_pos = avio_tell(pb); |
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| 34 | swf->tag = tag; |
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| 35 | /* reserve some room for the tag */ |
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| 36 | if (tag & TAG_LONG) { |
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| 37 | avio_wl16(pb, 0); |
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| 38 | avio_wl32(pb, 0); |
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| 39 | } else { |
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| 40 | avio_wl16(pb, 0); |
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| 41 | } |
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| 42 | } |
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| 43 | |||
| 44 | static void put_swf_end_tag(AVFormatContext *s) |
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| 45 | { |
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| 46 | SWFContext *swf = s->priv_data; |
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| 47 | AVIOContext *pb = s->pb; |
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| 48 | int64_t pos; |
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| 49 | int tag_len, tag; |
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| 50 | |||
| 51 | pos = avio_tell(pb); |
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| 52 | tag_len = pos - swf->tag_pos - 2; |
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| 53 | tag = swf->tag; |
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| 54 | avio_seek(pb, swf->tag_pos, SEEK_SET); |
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| 55 | if (tag & TAG_LONG) { |
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| 56 | tag &= ~TAG_LONG; |
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| 57 | avio_wl16(pb, (tag << 6) | 0x3f); |
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| 58 | avio_wl32(pb, tag_len - 4); |
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| 59 | } else { |
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| 60 | av_assert0(tag_len < 0x3f); |
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| 61 | avio_wl16(pb, (tag << 6) | tag_len); |
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| 62 | } |
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| 63 | avio_seek(pb, pos, SEEK_SET); |
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| 64 | } |
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| 65 | |||
| 66 | static inline void max_nbits(int *nbits_ptr, int val) |
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| 67 | { |
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| 68 | int n; |
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| 69 | |||
| 70 | if (val == 0) |
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| 71 | return; |
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| 72 | val = abs(val); |
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| 73 | n = 1; |
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| 74 | while (val != 0) { |
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| 75 | n++; |
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| 76 | val >>= 1; |
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| 77 | } |
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| 78 | if (n > *nbits_ptr) |
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| 79 | *nbits_ptr = n; |
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| 80 | } |
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| 81 | |||
| 82 | static void put_swf_rect(AVIOContext *pb, |
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| 83 | int xmin, int xmax, int ymin, int ymax) |
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| 84 | { |
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| 85 | PutBitContext p; |
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| 86 | uint8_t buf[256]; |
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| 87 | int nbits, mask; |
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| 88 | |||
| 89 | init_put_bits(&p, buf, sizeof(buf)); |
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| 90 | |||
| 91 | nbits = 0; |
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| 92 | max_nbits(&nbits, xmin); |
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| 93 | max_nbits(&nbits, xmax); |
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| 94 | max_nbits(&nbits, ymin); |
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| 95 | max_nbits(&nbits, ymax); |
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| 96 | mask = (1 << nbits) - 1; |
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| 97 | |||
| 98 | /* rectangle info */ |
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| 99 | put_bits(&p, 5, nbits); |
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| 100 | put_bits(&p, nbits, xmin & mask); |
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| 101 | put_bits(&p, nbits, xmax & mask); |
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| 102 | put_bits(&p, nbits, ymin & mask); |
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| 103 | put_bits(&p, nbits, ymax & mask); |
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| 104 | |||
| 105 | flush_put_bits(&p); |
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| 106 | avio_write(pb, buf, put_bits_ptr(&p) - p.buf); |
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| 107 | } |
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| 108 | |||
| 109 | static void put_swf_line_edge(PutBitContext *pb, int dx, int dy) |
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| 110 | { |
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| 111 | int nbits, mask; |
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| 112 | |||
| 113 | put_bits(pb, 1, 1); /* edge */ |
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| 114 | put_bits(pb, 1, 1); /* line select */ |
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| 115 | nbits = 2; |
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| 116 | max_nbits(&nbits, dx); |
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| 117 | max_nbits(&nbits, dy); |
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| 118 | |||
| 119 | mask = (1 << nbits) - 1; |
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| 120 | put_bits(pb, 4, nbits - 2); /* 16 bits precision */ |
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| 121 | if (dx == 0) { |
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| 122 | put_bits(pb, 1, 0); |
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| 123 | put_bits(pb, 1, 1); |
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| 124 | put_bits(pb, nbits, dy & mask); |
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| 125 | } else if (dy == 0) { |
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| 126 | put_bits(pb, 1, 0); |
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| 127 | put_bits(pb, 1, 0); |
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| 128 | put_bits(pb, nbits, dx & mask); |
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| 129 | } else { |
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| 130 | put_bits(pb, 1, 1); |
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| 131 | put_bits(pb, nbits, dx & mask); |
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| 132 | put_bits(pb, nbits, dy & mask); |
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| 133 | } |
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| 134 | } |
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| 135 | |||
| 136 | #define FRAC_BITS 16 |
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| 137 | |||
| 138 | static void put_swf_matrix(AVIOContext *pb, |
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| 139 | int a, int b, int c, int d, int tx, int ty) |
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| 140 | { |
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| 141 | PutBitContext p; |
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| 142 | uint8_t buf[256]; |
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| 143 | int nbits; |
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| 144 | |||
| 145 | init_put_bits(&p, buf, sizeof(buf)); |
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| 146 | |||
| 147 | put_bits(&p, 1, 1); /* a, d present */ |
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| 148 | nbits = 1; |
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| 149 | max_nbits(&nbits, a); |
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| 150 | max_nbits(&nbits, d); |
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| 151 | put_bits(&p, 5, nbits); /* nb bits */ |
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| 152 | put_bits(&p, nbits, a); |
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| 153 | put_bits(&p, nbits, d); |
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| 154 | |||
| 155 | put_bits(&p, 1, 1); /* b, c present */ |
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| 156 | nbits = 1; |
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| 157 | max_nbits(&nbits, c); |
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| 158 | max_nbits(&nbits, b); |
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| 159 | put_bits(&p, 5, nbits); /* nb bits */ |
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| 160 | put_bits(&p, nbits, c); |
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| 161 | put_bits(&p, nbits, b); |
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| 162 | |||
| 163 | nbits = 1; |
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| 164 | max_nbits(&nbits, tx); |
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| 165 | max_nbits(&nbits, ty); |
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| 166 | put_bits(&p, 5, nbits); /* nb bits */ |
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| 167 | put_bits(&p, nbits, tx); |
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| 168 | put_bits(&p, nbits, ty); |
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| 169 | |||
| 170 | flush_put_bits(&p); |
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| 171 | avio_write(pb, buf, put_bits_ptr(&p) - p.buf); |
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| 172 | } |
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| 173 | |||
| 174 | static int swf_write_header(AVFormatContext *s) |
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| 175 | { |
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| 176 | SWFContext *swf = s->priv_data; |
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| 177 | AVIOContext *pb = s->pb; |
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| 178 | PutBitContext p; |
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| 179 | uint8_t buf1[256]; |
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| 180 | int i, width, height, rate, rate_base; |
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| 181 | int version; |
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| 182 | |||
| 183 | swf->sound_samples = 0; |
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| 184 | swf->swf_frame_number = 0; |
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| 185 | swf->video_frame_number = 0; |
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| 186 | |||
| 187 | for(i=0;i |
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| 188 | AVCodecContext *enc = s->streams[i]->codec; |
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| 189 | if (enc->codec_type == AVMEDIA_TYPE_AUDIO) { |
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| 190 | if (swf->audio_enc) { |
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| 191 | av_log(s, AV_LOG_ERROR, "SWF muxer only supports 1 audio stream\n"); |
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| 192 | return AVERROR_INVALIDDATA; |
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| 193 | } |
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| 194 | if (enc->codec_id == AV_CODEC_ID_MP3) { |
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| 195 | if (!enc->frame_size) { |
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| 196 | av_log(s, AV_LOG_ERROR, "audio frame size not set\n"); |
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| 197 | return -1; |
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| 198 | } |
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| 199 | swf->audio_enc = enc; |
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| 200 | swf->audio_fifo= av_fifo_alloc(AUDIO_FIFO_SIZE); |
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| 201 | if (!swf->audio_fifo) |
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| 202 | return AVERROR(ENOMEM); |
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| 203 | } else { |
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| 204 | av_log(s, AV_LOG_ERROR, "SWF muxer only supports MP3\n"); |
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| 205 | return -1; |
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| 206 | } |
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| 207 | } else { |
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| 208 | if (swf->video_enc) { |
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| 209 | av_log(s, AV_LOG_ERROR, "SWF muxer only supports 1 video stream\n"); |
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| 210 | return AVERROR_INVALIDDATA; |
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| 211 | } |
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| 212 | if (enc->codec_id == AV_CODEC_ID_VP6F || |
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| 213 | enc->codec_id == AV_CODEC_ID_FLV1 || |
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| 214 | enc->codec_id == AV_CODEC_ID_MJPEG) { |
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| 215 | swf->video_enc = enc; |
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| 216 | } else { |
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| 217 | av_log(s, AV_LOG_ERROR, "SWF muxer only supports VP6, FLV1 and MJPEG\n"); |
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| 218 | return -1; |
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| 219 | } |
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| 220 | } |
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| 221 | } |
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| 222 | |||
| 223 | if (!swf->video_enc) { |
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| 224 | /* currently, cannot work correctly if audio only */ |
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| 225 | width = 320; |
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| 226 | height = 200; |
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| 227 | rate = 10; |
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| 228 | rate_base= 1; |
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| 229 | } else { |
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| 230 | width = swf->video_enc->width; |
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| 231 | height = swf->video_enc->height; |
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| 232 | rate = swf->video_enc->time_base.den; |
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| 233 | rate_base = swf->video_enc->time_base.num; |
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| 234 | } |
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| 235 | |||
| 236 | if (!swf->audio_enc) |
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| 237 | swf->samples_per_frame = (44100.0 * rate_base) / rate; |
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| 238 | else |
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| 239 | swf->samples_per_frame = (swf->audio_enc->sample_rate * rate_base) / rate; |
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| 240 | |||
| 241 | avio_write(pb, "FWS", 3); |
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| 242 | |||
| 243 | if (!strcmp("avm2", s->oformat->name)) |
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| 244 | version = 9; |
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| 245 | else if (swf->video_enc && swf->video_enc->codec_id == AV_CODEC_ID_VP6F) |
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| 246 | version = 8; /* version 8 and above support VP6 codec */ |
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| 247 | else if (swf->video_enc && swf->video_enc->codec_id == AV_CODEC_ID_FLV1) |
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| 248 | version = 6; /* version 6 and above support FLV1 codec */ |
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| 249 | else |
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| 250 | version = 4; /* version 4 for mpeg audio support */ |
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| 251 | avio_w8(pb, version); |
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| 252 | |||
| 253 | avio_wl32(pb, DUMMY_FILE_SIZE); /* dummy size |
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| 254 | (will be patched if not streamed) */ |
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| 255 | |||
| 256 | put_swf_rect(pb, 0, width * 20, 0, height * 20); |
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| 257 | avio_wl16(pb, (rate * 256) / rate_base); /* frame rate */ |
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| 258 | swf->duration_pos = avio_tell(pb); |
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| 259 | avio_wl16(pb, (uint16_t)(DUMMY_DURATION * (int64_t)rate / rate_base)); /* frame count */ |
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| 260 | |||
| 261 | /* avm2/swf v9 (also v8?) files require a file attribute tag */ |
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| 262 | if (version == 9) { |
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| 263 | put_swf_tag(s, TAG_FILEATTRIBUTES); |
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| 264 | avio_wl32(pb, 1<<3); /* set ActionScript v3/AVM2 flag */ |
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| 265 | put_swf_end_tag(s); |
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| 266 | } |
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| 267 | |||
| 268 | /* define a shape with the jpeg inside */ |
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| 269 | if (swf->video_enc && swf->video_enc->codec_id == AV_CODEC_ID_MJPEG) { |
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| 270 | put_swf_tag(s, TAG_DEFINESHAPE); |
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| 271 | |||
| 272 | avio_wl16(pb, SHAPE_ID); /* ID of shape */ |
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| 273 | /* bounding rectangle */ |
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| 274 | put_swf_rect(pb, 0, width, 0, height); |
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| 275 | /* style info */ |
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| 276 | avio_w8(pb, 1); /* one fill style */ |
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| 277 | avio_w8(pb, 0x41); /* clipped bitmap fill */ |
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| 278 | avio_wl16(pb, BITMAP_ID); /* bitmap ID */ |
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| 279 | /* position of the bitmap */ |
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| 280 | put_swf_matrix(pb, (int)(1.0 * (1 << FRAC_BITS)), 0, |
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| 281 | 0, (int)(1.0 * (1 << FRAC_BITS)), 0, 0); |
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| 282 | avio_w8(pb, 0); /* no line style */ |
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| 283 | |||
| 284 | /* shape drawing */ |
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| 285 | init_put_bits(&p, buf1, sizeof(buf1)); |
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| 286 | put_bits(&p, 4, 1); /* one fill bit */ |
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| 287 | put_bits(&p, 4, 0); /* zero line bit */ |
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| 288 | |||
| 289 | put_bits(&p, 1, 0); /* not an edge */ |
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| 290 | put_bits(&p, 5, FLAG_MOVETO | FLAG_SETFILL0); |
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| 291 | put_bits(&p, 5, 1); /* nbits */ |
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| 292 | put_bits(&p, 1, 0); /* X */ |
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| 293 | put_bits(&p, 1, 0); /* Y */ |
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| 294 | put_bits(&p, 1, 1); /* set fill style 1 */ |
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| 295 | |||
| 296 | /* draw the rectangle ! */ |
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| 297 | put_swf_line_edge(&p, width, 0); |
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| 298 | put_swf_line_edge(&p, 0, height); |
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| 299 | put_swf_line_edge(&p, -width, 0); |
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| 300 | put_swf_line_edge(&p, 0, -height); |
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| 301 | |||
| 302 | /* end of shape */ |
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| 303 | put_bits(&p, 1, 0); /* not an edge */ |
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| 304 | put_bits(&p, 5, 0); |
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| 305 | |||
| 306 | flush_put_bits(&p); |
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| 307 | avio_write(pb, buf1, put_bits_ptr(&p) - p.buf); |
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| 308 | |||
| 309 | put_swf_end_tag(s); |
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| 310 | } |
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| 311 | |||
| 312 | if (swf->audio_enc && swf->audio_enc->codec_id == AV_CODEC_ID_MP3) { |
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| 313 | int v = 0; |
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| 314 | |||
| 315 | /* start sound */ |
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| 316 | put_swf_tag(s, TAG_STREAMHEAD2); |
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| 317 | switch(swf->audio_enc->sample_rate) { |
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| 318 | case 11025: v |= 1 << 2; break; |
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| 319 | case 22050: v |= 2 << 2; break; |
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| 320 | case 44100: v |= 3 << 2; break; |
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| 321 | default: |
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| 322 | /* not supported */ |
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| 323 | av_log(s, AV_LOG_ERROR, "swf does not support that sample rate, choose from (44100, 22050, 11025).\n"); |
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| 324 | return -1; |
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| 325 | } |
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| 326 | v |= 0x02; /* 16 bit playback */ |
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| 327 | if (swf->audio_enc->channels == 2) |
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| 328 | v |= 0x01; /* stereo playback */ |
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| 329 | avio_w8(s->pb, v); |
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| 330 | v |= 0x20; /* mp3 compressed */ |
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| 331 | avio_w8(s->pb, v); |
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| 332 | avio_wl16(s->pb, swf->samples_per_frame); /* avg samples per frame */ |
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| 333 | avio_wl16(s->pb, 0); |
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| 334 | |||
| 335 | put_swf_end_tag(s); |
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| 336 | } |
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| 337 | |||
| 338 | avio_flush(s->pb); |
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| 339 | return 0; |
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| 340 | } |
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| 341 | |||
| 342 | static int swf_write_video(AVFormatContext *s, |
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| 343 | AVCodecContext *enc, const uint8_t *buf, int size) |
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| 344 | { |
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| 345 | SWFContext *swf = s->priv_data; |
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| 346 | AVIOContext *pb = s->pb; |
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| 347 | |||
| 348 | /* Flash Player limit */ |
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| 349 | if (swf->swf_frame_number == 16000) |
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| 350 | av_log(enc, AV_LOG_INFO, "warning: Flash Player limit of 16000 frames reached\n"); |
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| 351 | |||
| 352 | if (enc->codec_id == AV_CODEC_ID_VP6F || |
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| 353 | enc->codec_id == AV_CODEC_ID_FLV1) { |
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| 354 | if (swf->video_frame_number == 0) { |
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| 355 | /* create a new video object */ |
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| 356 | put_swf_tag(s, TAG_VIDEOSTREAM); |
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| 357 | avio_wl16(pb, VIDEO_ID); |
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| 358 | swf->vframes_pos = avio_tell(pb); |
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| 359 | avio_wl16(pb, 15000); /* hard flash player limit */ |
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| 360 | avio_wl16(pb, enc->width); |
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| 361 | avio_wl16(pb, enc->height); |
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| 362 | avio_w8(pb, 0); |
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| 363 | avio_w8(pb,ff_codec_get_tag(ff_swf_codec_tags, enc->codec_id)); |
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| 364 | put_swf_end_tag(s); |
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| 365 | |||
| 366 | /* place the video object for the first time */ |
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| 367 | put_swf_tag(s, TAG_PLACEOBJECT2); |
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| 368 | avio_w8(pb, 0x36); |
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| 369 | avio_wl16(pb, 1); |
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| 370 | avio_wl16(pb, VIDEO_ID); |
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| 371 | put_swf_matrix(pb, 1 << FRAC_BITS, 0, 0, 1 << FRAC_BITS, 0, 0); |
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| 372 | avio_wl16(pb, swf->video_frame_number); |
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| 373 | avio_write(pb, "video", 5); |
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| 374 | avio_w8(pb, 0x00); |
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| 375 | put_swf_end_tag(s); |
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| 376 | } else { |
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| 377 | /* mark the character for update */ |
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| 378 | put_swf_tag(s, TAG_PLACEOBJECT2); |
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| 379 | avio_w8(pb, 0x11); |
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| 380 | avio_wl16(pb, 1); |
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| 381 | avio_wl16(pb, swf->video_frame_number); |
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| 382 | put_swf_end_tag(s); |
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| 383 | } |
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| 384 | |||
| 385 | /* set video frame data */ |
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| 386 | put_swf_tag(s, TAG_VIDEOFRAME | TAG_LONG); |
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| 387 | avio_wl16(pb, VIDEO_ID); |
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| 388 | avio_wl16(pb, swf->video_frame_number++); |
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| 389 | avio_write(pb, buf, size); |
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| 390 | put_swf_end_tag(s); |
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| 391 | } else if (enc->codec_id == AV_CODEC_ID_MJPEG) { |
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| 392 | if (swf->swf_frame_number > 0) { |
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| 393 | /* remove the shape */ |
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| 394 | put_swf_tag(s, TAG_REMOVEOBJECT); |
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| 395 | avio_wl16(pb, SHAPE_ID); /* shape ID */ |
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| 396 | avio_wl16(pb, 1); /* depth */ |
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| 397 | put_swf_end_tag(s); |
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| 398 | |||
| 399 | /* free the bitmap */ |
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| 400 | put_swf_tag(s, TAG_FREECHARACTER); |
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| 401 | avio_wl16(pb, BITMAP_ID); |
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| 402 | put_swf_end_tag(s); |
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| 403 | } |
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| 404 | |||
| 405 | put_swf_tag(s, TAG_JPEG2 | TAG_LONG); |
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| 406 | |||
| 407 | avio_wl16(pb, BITMAP_ID); /* ID of the image */ |
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| 408 | |||
| 409 | /* a dummy jpeg header seems to be required */ |
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| 410 | avio_wb32(pb, 0xffd8ffd9); |
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| 411 | /* write the jpeg image */ |
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| 412 | avio_write(pb, buf, size); |
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| 413 | |||
| 414 | put_swf_end_tag(s); |
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| 415 | |||
| 416 | /* draw the shape */ |
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| 417 | |||
| 418 | put_swf_tag(s, TAG_PLACEOBJECT); |
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| 419 | avio_wl16(pb, SHAPE_ID); /* shape ID */ |
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| 420 | avio_wl16(pb, 1); /* depth */ |
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| 421 | put_swf_matrix(pb, 20 << FRAC_BITS, 0, 0, 20 << FRAC_BITS, 0, 0); |
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| 422 | put_swf_end_tag(s); |
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| 423 | } |
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| 424 | |||
| 425 | swf->swf_frame_number++; |
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| 426 | |||
| 427 | /* streaming sound always should be placed just before showframe tags */ |
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| 428 | if (swf->audio_enc && av_fifo_size(swf->audio_fifo)) { |
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| 429 | int frame_size = av_fifo_size(swf->audio_fifo); |
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| 430 | put_swf_tag(s, TAG_STREAMBLOCK | TAG_LONG); |
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| 431 | avio_wl16(pb, swf->sound_samples); |
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| 432 | avio_wl16(pb, 0); // seek samples |
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| 433 | av_fifo_generic_read(swf->audio_fifo, pb, frame_size, (void*)avio_write); |
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| 434 | put_swf_end_tag(s); |
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| 435 | |||
| 436 | /* update FIFO */ |
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| 437 | swf->sound_samples = 0; |
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| 438 | } |
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| 439 | |||
| 440 | /* output the frame */ |
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| 441 | put_swf_tag(s, TAG_SHOWFRAME); |
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| 442 | put_swf_end_tag(s); |
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| 443 | |||
| 444 | return 0; |
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| 445 | } |
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| 446 | |||
| 447 | static int swf_write_audio(AVFormatContext *s, |
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| 448 | AVCodecContext *enc, uint8_t *buf, int size) |
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| 449 | { |
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| 450 | SWFContext *swf = s->priv_data; |
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| 451 | |||
| 452 | /* Flash Player limit */ |
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| 453 | if (swf->swf_frame_number == 16000) |
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| 454 | av_log(enc, AV_LOG_INFO, "warning: Flash Player limit of 16000 frames reached\n"); |
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| 455 | |||
| 456 | if (av_fifo_size(swf->audio_fifo) + size > AUDIO_FIFO_SIZE) { |
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| 457 | av_log(s, AV_LOG_ERROR, "audio fifo too small to mux audio essence\n"); |
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| 458 | return -1; |
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| 459 | } |
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| 460 | |||
| 461 | av_fifo_generic_write(swf->audio_fifo, buf, size, NULL); |
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| 462 | swf->sound_samples += enc->frame_size; |
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| 463 | |||
| 464 | /* if audio only stream make sure we add swf frames */ |
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| 465 | if (!swf->video_enc) |
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| 466 | swf_write_video(s, enc, 0, 0); |
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| 467 | |||
| 468 | return 0; |
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| 469 | } |
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| 470 | |||
| 471 | static int swf_write_packet(AVFormatContext *s, AVPacket *pkt) |
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| 472 | { |
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| 473 | AVCodecContext *codec = s->streams[pkt->stream_index]->codec; |
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| 474 | if (codec->codec_type == AVMEDIA_TYPE_AUDIO) |
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| 475 | return swf_write_audio(s, codec, pkt->data, pkt->size); |
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| 476 | else |
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| 477 | return swf_write_video(s, codec, pkt->data, pkt->size); |
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| 478 | } |
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| 479 | |||
| 480 | static int swf_write_trailer(AVFormatContext *s) |
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| 481 | { |
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| 482 | SWFContext *swf = s->priv_data; |
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| 483 | AVIOContext *pb = s->pb; |
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| 484 | AVCodecContext *enc, *video_enc; |
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| 485 | int file_size, i; |
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| 486 | |||
| 487 | video_enc = NULL; |
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| 488 | for(i=0;i |
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| 489 | enc = s->streams[i]->codec; |
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| 490 | if (enc->codec_type == AVMEDIA_TYPE_VIDEO) |
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| 491 | video_enc = enc; |
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| 492 | else { |
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| 493 | av_fifo_free(swf->audio_fifo); |
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| 494 | swf->audio_fifo = NULL; |
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| 495 | } |
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| 496 | } |
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| 497 | |||
| 498 | put_swf_tag(s, TAG_END); |
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| 499 | put_swf_end_tag(s); |
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| 500 | |||
| 501 | /* patch file size and number of frames if not streamed */ |
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| 502 | if (s->pb->seekable && video_enc) { |
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| 503 | file_size = avio_tell(pb); |
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| 504 | avio_seek(pb, 4, SEEK_SET); |
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| 505 | avio_wl32(pb, file_size); |
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| 506 | avio_seek(pb, swf->duration_pos, SEEK_SET); |
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| 507 | avio_wl16(pb, swf->video_frame_number); |
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| 508 | if (swf->vframes_pos) { |
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| 509 | avio_seek(pb, swf->vframes_pos, SEEK_SET); |
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| 510 | avio_wl16(pb, swf->video_frame_number); |
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| 511 | } |
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| 512 | avio_seek(pb, file_size, SEEK_SET); |
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| 513 | } |
||
| 514 | return 0; |
||
| 515 | } |
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| 516 | |||
| 517 | #if CONFIG_SWF_MUXER |
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| 518 | AVOutputFormat ff_swf_muxer = { |
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| 519 | .name = "swf", |
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| 520 | .long_name = NULL_IF_CONFIG_SMALL("SWF (ShockWave Flash)"), |
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| 521 | .mime_type = "application/x-shockwave-flash", |
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| 522 | .extensions = "swf", |
||
| 523 | .priv_data_size = sizeof(SWFContext), |
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| 524 | .audio_codec = AV_CODEC_ID_MP3, |
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| 525 | .video_codec = AV_CODEC_ID_FLV1, |
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| 526 | .write_header = swf_write_header, |
||
| 527 | .write_packet = swf_write_packet, |
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| 528 | .write_trailer = swf_write_trailer, |
||
| 529 | .flags = AVFMT_TS_NONSTRICT, |
||
| 530 | }; |
||
| 531 | #endif |
||
| 532 | #if CONFIG_AVM2_MUXER |
||
| 533 | AVOutputFormat ff_avm2_muxer = { |
||
| 534 | .name = "avm2", |
||
| 535 | .long_name = NULL_IF_CONFIG_SMALL("SWF (ShockWave Flash) (AVM2)"), |
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| 536 | .mime_type = "application/x-shockwave-flash", |
||
| 537 | .priv_data_size = sizeof(SWFContext), |
||
| 538 | .audio_codec = AV_CODEC_ID_MP3, |
||
| 539 | .video_codec = AV_CODEC_ID_FLV1, |
||
| 540 | .write_header = swf_write_header, |
||
| 541 | .write_packet = swf_write_packet, |
||
| 542 | .write_trailer = swf_write_trailer, |
||
| 543 | .flags = AVFMT_TS_NONSTRICT, |
||
| 544 | }; |
||
| 545 | #endif |