3 * Copyright (c) 2008-2010 Peter Ross (pross@xvid.org)
4 * Copyright (c) 2009 Daniel Verkamp (daniel@drv.nu)
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 * Technical details here:
28 * http://wiki.multimedia.cx/index.php?title=Bink_Container
33 #include "libavutil/channel_layout.h"
34 #include "libavutil/intreadwrite.h"
39 BINK_AUD_16BITS = 0x4000, ///< prefer 16-bit output
40 BINK_AUD_STEREO = 0x2000,
41 BINK_AUD_USEDCT = 0x1000,
44 #define BINK_EXTRADATA_SIZE 1
45 #define BINK_MAX_AUDIO_TRACKS 256
46 #define BINK_MAX_WIDTH 7680
47 #define BINK_MAX_HEIGHT 4800
48 #define SMUSH_BLOCK_SIZE 512
50 typedef struct BinkDemuxContext {
53 uint32_t num_audio_tracks;
54 int current_track; ///< audio track to return in next packet
56 int64_t audio_pts[BINK_MAX_AUDIO_TRACKS];
58 uint32_t remain_packet_size;
62 static int probe(AVProbeData *p)
64 const uint8_t *b = p->buf;
65 int smush = AV_RN32(p->buf) == AV_RN32("SMUS");
68 if (((b[0] == 'B' && b[1] == 'I' && b[2] == 'K' &&
69 (b[3] == 'b' || b[3] == 'f' || b[3] == 'g' || b[3] == 'h' || b[3] == 'i')) ||
70 (b[0] == 'K' && b[1] == 'B' && b[2] == '2' && /* Bink 2 */
71 (b[3] == 'a' || b[3] == 'd' || b[3] == 'f' || b[3] == 'g'))) &&
72 AV_RL32(b+8) > 0 && // num_frames
73 AV_RL32(b+20) > 0 && AV_RL32(b+20) <= BINK_MAX_WIDTH &&
74 AV_RL32(b+24) > 0 && AV_RL32(b+24) <= BINK_MAX_HEIGHT &&
75 AV_RL32(b+28) > 0 && AV_RL32(b+32) > 0) // fps num,den
76 return AVPROBE_SCORE_MAX;
77 b += SMUSH_BLOCK_SIZE;
78 } while (smush && b < p->buf + p->buf_size - 32);
82 static int read_header(AVFormatContext *s)
84 BinkDemuxContext *bink = s->priv_data;
85 AVIOContext *pb = s->pb;
86 uint32_t fps_num, fps_den;
89 uint32_t pos, next_pos;
94 vst = avformat_new_stream(s, NULL);
96 return AVERROR(ENOMEM);
98 vst->codecpar->codec_tag = avio_rl32(pb);
99 if (vst->codecpar->codec_tag == AV_RL32("SMUS")) {
101 bink->smush_size += SMUSH_BLOCK_SIZE;
102 avio_skip(pb, SMUSH_BLOCK_SIZE - 4);
103 vst->codecpar->codec_tag = avio_rl32(pb);
104 } while (!avio_feof(pb) && (vst->codecpar->codec_tag & 0xFFFFFF) != AV_RL32("BIK"));
106 av_log(s, AV_LOG_ERROR, "invalid SMUSH header: BIK not found\n");
107 return AVERROR_INVALIDDATA;
111 bink->file_size = avio_rl32(pb) + 8;
112 vst->duration = avio_rl32(pb);
114 if (vst->duration > 1000000) {
115 av_log(s, AV_LOG_ERROR, "invalid header: more than 1000000 frames\n");
119 if (avio_rl32(pb) > bink->file_size) {
120 av_log(s, AV_LOG_ERROR,
121 "invalid header: largest frame size greater than file size\n");
127 vst->codecpar->width = avio_rl32(pb);
128 vst->codecpar->height = avio_rl32(pb);
130 fps_num = avio_rl32(pb);
131 fps_den = avio_rl32(pb);
132 if (fps_num == 0 || fps_den == 0) {
133 av_log(s, AV_LOG_ERROR,
134 "invalid header: invalid fps (%"PRIu32"/%"PRIu32")\n",
138 avpriv_set_pts_info(vst, 64, fps_den, fps_num);
139 vst->avg_frame_rate = av_inv_q(vst->time_base);
141 vst->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
142 vst->codecpar->codec_id = AV_CODEC_ID_BINKVIDEO;
144 if ((vst->codecpar->codec_tag & 0xFFFFFF) == MKTAG('K', 'B', '2', 0)) {
145 av_log(s, AV_LOG_WARNING, "Bink 2 video is not implemented\n");
146 vst->codecpar->codec_id = AV_CODEC_ID_NONE;
149 if (ff_get_extradata(s, vst->codecpar, pb, 4) < 0)
150 return AVERROR(ENOMEM);
152 bink->num_audio_tracks = avio_rl32(pb);
154 if (bink->num_audio_tracks > BINK_MAX_AUDIO_TRACKS) {
155 av_log(s, AV_LOG_ERROR,
156 "invalid header: more than "AV_STRINGIFY(BINK_MAX_AUDIO_TRACKS)" audio tracks (%"PRIu32")\n",
157 bink->num_audio_tracks);
161 if (bink->num_audio_tracks) {
162 avio_skip(pb, 4 * bink->num_audio_tracks);
164 for (i = 0; i < bink->num_audio_tracks; i++) {
165 ast = avformat_new_stream(s, NULL);
167 return AVERROR(ENOMEM);
168 ast->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
169 ast->codecpar->codec_tag = 0;
170 ast->codecpar->sample_rate = avio_rl16(pb);
171 avpriv_set_pts_info(ast, 64, 1, ast->codecpar->sample_rate);
172 flags = avio_rl16(pb);
173 ast->codecpar->codec_id = flags & BINK_AUD_USEDCT ?
174 AV_CODEC_ID_BINKAUDIO_DCT : AV_CODEC_ID_BINKAUDIO_RDFT;
175 if (flags & BINK_AUD_STEREO) {
176 ast->codecpar->channels = 2;
177 ast->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
179 ast->codecpar->channels = 1;
180 ast->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
182 if (ff_alloc_extradata(ast->codecpar, 4))
183 return AVERROR(ENOMEM);
184 AV_WL32(ast->codecpar->extradata, vst->codecpar->codec_tag);
187 for (i = 0; i < bink->num_audio_tracks; i++)
188 s->streams[i + 1]->id = avio_rl32(pb);
191 /* frame index table */
192 next_pos = avio_rl32(pb);
193 for (i = 0; i < vst->duration; i++) {
195 if (i == vst->duration - 1) {
196 next_pos = bink->file_size;
199 next_pos = avio_rl32(pb);
205 if (next_pos <= pos) {
206 av_log(s, AV_LOG_ERROR, "invalid frame index table\n");
209 if ((ret = av_add_index_entry(vst, pos, i, next_pos - pos, 0,
210 keyframe ? AVINDEX_KEYFRAME : 0)) < 0)
214 if (vst->index_entries)
215 avio_seek(pb, vst->index_entries[0].pos + bink->smush_size, SEEK_SET);
219 bink->current_track = -1;
223 static int read_packet(AVFormatContext *s, AVPacket *pkt)
225 BinkDemuxContext *bink = s->priv_data;
226 AVIOContext *pb = s->pb;
229 if (bink->current_track < 0) {
231 AVStream *st = s->streams[0]; // stream 0 is video stream with index
233 if (bink->video_pts >= st->duration)
236 index_entry = av_index_search_timestamp(st, bink->video_pts,
238 if (index_entry < 0) {
239 av_log(s, AV_LOG_ERROR,
240 "could not find index entry for frame %"PRId64"\n",
245 bink->remain_packet_size = st->index_entries[index_entry].size;
246 bink->current_track = 0;
249 while (bink->current_track < bink->num_audio_tracks) {
250 uint32_t audio_size = avio_rl32(pb);
251 if (audio_size > bink->remain_packet_size - 4) {
252 av_log(s, AV_LOG_ERROR,
253 "frame %"PRId64": audio size in header (%"PRIu32") > size of packet left (%"PRIu32")\n",
254 bink->video_pts, audio_size, bink->remain_packet_size);
257 bink->remain_packet_size -= 4 + audio_size;
258 bink->current_track++;
259 if (audio_size >= 4) {
260 /* get one audio packet per track */
261 if ((ret = av_get_packet(pb, pkt, audio_size)) < 0)
263 pkt->stream_index = bink->current_track;
264 pkt->pts = bink->audio_pts[bink->current_track - 1];
266 /* Each audio packet reports the number of decompressed samples
267 (in bytes). We use this value to calculate the audio PTS */
269 bink->audio_pts[bink->current_track -1] +=
270 AV_RL32(pkt->data) / (2 * s->streams[bink->current_track]->codecpar->channels);
273 avio_skip(pb, audio_size);
277 /* get video packet */
278 if ((ret = av_get_packet(pb, pkt, bink->remain_packet_size)) < 0)
280 pkt->stream_index = 0;
281 pkt->pts = bink->video_pts++;
282 pkt->flags |= AV_PKT_FLAG_KEY;
284 /* -1 instructs the next call to read_packet() to read the next frame */
285 bink->current_track = -1;
290 static int read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
292 BinkDemuxContext *bink = s->priv_data;
293 AVStream *vst = s->streams[0];
295 if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL))
298 /* seek to the first frame */
299 if (avio_seek(s->pb, vst->index_entries[0].pos + bink->smush_size, SEEK_SET) < 0)
303 memset(bink->audio_pts, 0, sizeof(bink->audio_pts));
304 bink->current_track = -1;
308 AVInputFormat ff_bink_demuxer = {
310 .long_name = NULL_IF_CONFIG_SMALL("Bink"),
311 .priv_data_size = sizeof(BinkDemuxContext),
313 .read_header = read_header,
314 .read_packet = read_packet,
315 .read_seek = read_seek,
316 .flags = AVFMT_SHOW_IDS,