1 /* Electronic Arts Multimedia File Demuxer
2 * Copyright (c) 2004 The ffmpeg Project
3 * Copyright (c) 2006-2008 Peter Ross
5 * This file is part of Libav.
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * Electronic Arts Multimedia file demuxer (WVE/UV2/etc.)
25 * by Robin Kay (komadori at gekkou.co.uk)
28 #include "libavutil/intreadwrite.h"
32 #define SCHl_TAG MKTAG('S', 'C', 'H', 'l')
33 #define SEAD_TAG MKTAG('S', 'E', 'A', 'D') /* Sxxx header */
34 #define SNDC_TAG MKTAG('S', 'N', 'D', 'C') /* Sxxx data */
35 #define SEND_TAG MKTAG('S', 'E', 'N', 'D') /* Sxxx end */
36 #define SHEN_TAG MKTAG('S', 'H', 'E', 'N') /* SxEN header */
37 #define SDEN_TAG MKTAG('S', 'D', 'E', 'N') /* SxEN data */
38 #define SEEN_TAG MKTAG('S', 'E', 'E', 'N') /* SxEN end */
39 #define ISNh_TAG MKTAG('1', 'S', 'N', 'h') /* 1SNx header */
40 #define EACS_TAG MKTAG('E', 'A', 'C', 'S')
41 #define ISNd_TAG MKTAG('1', 'S', 'N', 'd') /* 1SNx data */
42 #define ISNe_TAG MKTAG('1', 'S', 'N', 'e') /* 1SNx end */
43 #define PT00_TAG MKTAG('P', 'T', 0x0, 0x0)
44 #define GSTR_TAG MKTAG('G', 'S', 'T', 'R')
45 #define SCDl_TAG MKTAG('S', 'C', 'D', 'l')
46 #define SCEl_TAG MKTAG('S', 'C', 'E', 'l')
47 #define kVGT_TAG MKTAG('k', 'V', 'G', 'T') /* TGV i-frame */
48 #define fVGT_TAG MKTAG('f', 'V', 'G', 'T') /* TGV p-frame */
49 #define mTCD_TAG MKTAG('m', 'T', 'C', 'D') /* MDEC */
50 #define MADk_TAG MKTAG('M', 'A', 'D', 'k') /* MAD i-frame */
51 #define MADm_TAG MKTAG('M', 'A', 'D', 'm') /* MAD p-frame */
52 #define MADe_TAG MKTAG('M', 'A', 'D', 'e') /* MAD lqp-frame */
53 #define MPCh_TAG MKTAG('M', 'P', 'C', 'h') /* MPEG2 */
54 #define TGQs_TAG MKTAG('T', 'G', 'Q', 's') /* TGQ i-frame (appears in .TGQ files) */
55 #define pQGT_TAG MKTAG('p', 'Q', 'G', 'T') /* TGQ i-frame (appears in .UV files) */
56 #define pIQT_TAG MKTAG('p', 'I', 'Q', 'T') /* TQI/UV2 i-frame (.UV2/.WVE) */
57 #define MVhd_TAG MKTAG('M', 'V', 'h', 'd')
58 #define MV0K_TAG MKTAG('M', 'V', '0', 'K')
59 #define MV0F_TAG MKTAG('M', 'V', '0', 'F')
60 #define MVIh_TAG MKTAG('M', 'V', 'I', 'h') /* CMV header */
61 #define MVIf_TAG MKTAG('M', 'V', 'I', 'f') /* CMV i-frame */
63 typedef struct EaDemuxContext {
66 enum CodecID video_codec;
69 int video_stream_index;
71 enum CodecID audio_codec;
72 int audio_stream_index;
80 static uint32_t read_arbitary(AVIOContext *pb) {
88 for (i = 0; i < size; i++) {
98 * Process PT/GSTR sound header
99 * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
101 static int process_audio_header_elements(AVFormatContext *s)
104 EaDemuxContext *ea = s->priv_data;
105 AVIOContext *pb = s->pb;
106 int compression_type = -1, revision = -1, revision2 = -1;
109 ea->sample_rate = -1;
110 ea->num_channels = 1;
112 while (!pb->eof_reached && inHeader) {
119 av_log (s, AV_LOG_DEBUG, "entered audio subheader\n");
121 while (!pb->eof_reached && inSubheader) {
123 subbyte = avio_r8(pb);
127 revision = read_arbitary(pb);
128 av_log (s, AV_LOG_DEBUG, "revision (element 0x80) set to 0x%08x\n", revision);
131 ea->num_channels = read_arbitary(pb);
132 av_log (s, AV_LOG_DEBUG, "num_channels (element 0x82) set to 0x%08x\n", ea->num_channels);
135 compression_type = read_arbitary(pb);
136 av_log (s, AV_LOG_DEBUG, "compression_type (element 0x83) set to 0x%08x\n", compression_type);
139 ea->sample_rate = read_arbitary(pb);
140 av_log (s, AV_LOG_DEBUG, "sample_rate (element 0x84) set to %i\n", ea->sample_rate);
143 ea->num_samples = read_arbitary(pb);
144 av_log (s, AV_LOG_DEBUG, "num_samples (element 0x85) set to 0x%08x\n", ea->num_samples);
147 av_log (s, AV_LOG_DEBUG, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb));
148 av_log (s, AV_LOG_DEBUG, "exited audio subheader\n");
152 revision2 = read_arbitary(pb);
153 av_log (s, AV_LOG_DEBUG, "revision2 (element 0xA0) set to 0x%08x\n", revision2);
156 av_log (s, AV_LOG_DEBUG, "end of header block reached (within audio subheader)\n");
161 av_log (s, AV_LOG_DEBUG, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb));
167 av_log (s, AV_LOG_DEBUG, "end of header block reached\n");
171 av_log (s, AV_LOG_DEBUG, "header element 0x%02x set to 0x%08x\n", byte, read_arbitary(pb));
176 switch (compression_type) {
177 case 0: ea->audio_codec = CODEC_ID_PCM_S16LE; break;
178 case 7: ea->audio_codec = CODEC_ID_ADPCM_EA; break;
181 case 1: ea->audio_codec = CODEC_ID_ADPCM_EA_R1; break;
182 case 2: ea->audio_codec = CODEC_ID_ADPCM_EA_R2; break;
183 case 3: ea->audio_codec = CODEC_ID_ADPCM_EA_R3; break;
186 av_log(s, AV_LOG_ERROR, "unsupported stream type; revision=%i\n", revision);
190 case 8: ea->audio_codec = CODEC_ID_PCM_S16LE_PLANAR; break;
191 case 10: ea->audio_codec = CODEC_ID_ADPCM_EA_R2; break;
192 case 16: ea->audio_codec = CODEC_ID_MP3; break;
195 ea->audio_codec = CODEC_ID_NONE;
196 av_log(s, AV_LOG_ERROR, "unsupported stream type; revision2=%i\n", revision2);
201 av_log(s, AV_LOG_ERROR, "unsupported stream type; compression_type=%i\n", compression_type);
205 if (ea->sample_rate == -1)
206 ea->sample_rate = revision==3 ? 48000 : 22050;
212 * Process EACS sound header
213 * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
215 static int process_audio_header_eacs(AVFormatContext *s)
217 EaDemuxContext *ea = s->priv_data;
218 AVIOContext *pb = s->pb;
219 int compression_type;
221 ea->sample_rate = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb);
222 ea->bytes = avio_r8(pb); /* 1=8-bit, 2=16-bit */
223 ea->num_channels = avio_r8(pb);
224 compression_type = avio_r8(pb);
227 switch (compression_type) {
230 case 1: ea->audio_codec = CODEC_ID_PCM_S8; break;
231 case 2: ea->audio_codec = CODEC_ID_PCM_S16LE; break;
234 case 1: ea->audio_codec = CODEC_ID_PCM_MULAW; ea->bytes = 1; break;
235 case 2: ea->audio_codec = CODEC_ID_ADPCM_IMA_EA_EACS; break;
237 av_log (s, AV_LOG_ERROR, "unsupported stream type; audio compression_type=%i\n", compression_type);
244 * Process SEAD sound header
245 * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
247 static int process_audio_header_sead(AVFormatContext *s)
249 EaDemuxContext *ea = s->priv_data;
250 AVIOContext *pb = s->pb;
252 ea->sample_rate = avio_rl32(pb);
253 ea->bytes = avio_rl32(pb); /* 1=8-bit, 2=16-bit */
254 ea->num_channels = avio_rl32(pb);
255 ea->audio_codec = CODEC_ID_ADPCM_IMA_EA_SEAD;
260 static int process_video_header_mdec(AVFormatContext *s)
262 EaDemuxContext *ea = s->priv_data;
263 AVIOContext *pb = s->pb;
265 ea->width = avio_rl16(pb);
266 ea->height = avio_rl16(pb);
267 ea->time_base = (AVRational){1,15};
268 ea->video_codec = CODEC_ID_MDEC;
272 static int process_video_header_vp6(AVFormatContext *s)
274 EaDemuxContext *ea = s->priv_data;
275 AVIOContext *pb = s->pb;
278 ea->time_base.den = avio_rl32(pb);
279 ea->time_base.num = avio_rl32(pb);
280 ea->video_codec = CODEC_ID_VP6;
285 static int process_video_header_cmv(AVFormatContext *s)
287 EaDemuxContext *ea = s->priv_data;
290 avio_skip(s->pb, 10);
291 fps = avio_rl16(s->pb);
293 ea->time_base = (AVRational){1, fps};
294 ea->video_codec = CODEC_ID_CMV;
300 * Process EA file header
301 * Returns 1 if the EA file is valid and successfully opened, 0 otherwise
303 static int process_ea_header(AVFormatContext *s) {
304 uint32_t blockid, size = 0;
305 EaDemuxContext *ea = s->priv_data;
306 AVIOContext *pb = s->pb;
309 for (i=0; i<5 && (!ea->audio_codec || !ea->video_codec); i++) {
310 unsigned int startpos = avio_tell(pb);
313 blockid = avio_rl32(pb);
314 size = avio_rl32(pb);
316 ea->big_endian = size > 0x000FFFFF;
318 size = av_bswap32(size);
322 if (avio_rl32(pb) != EACS_TAG) {
323 av_log (s, AV_LOG_ERROR, "unknown 1SNh headerid\n");
326 err = process_audio_header_eacs(s);
331 blockid = avio_rl32(pb);
332 if (blockid == GSTR_TAG) {
334 } else if ((blockid & 0xFFFF)!=PT00_TAG) {
335 av_log (s, AV_LOG_ERROR, "unknown SCHl headerid\n");
338 err = process_audio_header_elements(s);
342 err = process_audio_header_sead(s);
346 err = process_video_header_cmv(s);
350 ea->video_codec = CODEC_ID_TGV;
351 ea->time_base = (AVRational){1, 15};
355 err = process_video_header_mdec(s);
359 ea->video_codec = CODEC_ID_MPEG2VIDEO;
364 ea->video_codec = CODEC_ID_TGQ;
368 ea->video_codec = CODEC_ID_TQI;
372 ea->video_codec = CODEC_ID_MAD;
376 err = process_video_header_vp6(s);
381 av_log(s, AV_LOG_ERROR, "error parsing header: %i\n", err);
385 avio_seek(pb, startpos + size, SEEK_SET);
388 avio_seek(pb, 0, SEEK_SET);
394 static int ea_probe(AVProbeData *p)
396 switch (AV_RL32(&p->buf[0])) {
410 if (AV_RL32(&p->buf[4]) > 0xfffff && AV_RB32(&p->buf[4]) > 0xfffff)
412 return AVPROBE_SCORE_MAX;
415 static int ea_read_header(AVFormatContext *s)
417 EaDemuxContext *ea = s->priv_data;
420 if (!process_ea_header(s))
423 if (ea->video_codec) {
424 /* initialize the video decoder stream */
425 st = avformat_new_stream(s, NULL);
427 return AVERROR(ENOMEM);
428 ea->video_stream_index = st->index;
429 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
430 st->codec->codec_id = ea->video_codec;
431 st->codec->codec_tag = 0; /* no fourcc */
432 st->codec->width = ea->width;
433 st->codec->height = ea->height;
434 avpriv_set_pts_info(st, 33, ea->time_base.num, ea->time_base.den);
435 st->r_frame_rate = st->avg_frame_rate = (AVRational){ea->time_base.den,
439 if (ea->audio_codec) {
440 if (ea->num_channels <= 0) {
441 av_log(s, AV_LOG_WARNING, "Unsupported number of channels: %d\n", ea->num_channels);
445 if (ea->sample_rate <= 0) {
446 av_log(s, AV_LOG_ERROR, "Unsupported sample rate: %d\n", ea->sample_rate);
450 if (ea->bytes <= 0) {
451 av_log(s, AV_LOG_ERROR, "Invalid number of bytes per sample: %d\n", ea->bytes);
452 ea->audio_codec = CODEC_ID_NONE;
456 /* initialize the audio decoder stream */
457 st = avformat_new_stream(s, NULL);
459 return AVERROR(ENOMEM);
460 avpriv_set_pts_info(st, 33, 1, ea->sample_rate);
461 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
462 st->codec->codec_id = ea->audio_codec;
463 st->codec->codec_tag = 0; /* no tag */
464 st->codec->channels = ea->num_channels;
465 st->codec->sample_rate = ea->sample_rate;
466 st->codec->bits_per_coded_sample = ea->bytes * 8;
467 st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
468 st->codec->bits_per_coded_sample / 4;
469 st->codec->block_align = st->codec->channels*st->codec->bits_per_coded_sample;
470 ea->audio_stream_index = st->index;
477 static int ea_read_packet(AVFormatContext *s,
480 EaDemuxContext *ea = s->priv_data;
481 AVIOContext *pb = s->pb;
484 unsigned int chunk_type, chunk_size;
486 int av_uninit(num_samples);
488 while (!packet_read) {
489 chunk_type = avio_rl32(pb);
490 chunk_size = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb);
492 return AVERROR_INVALIDDATA;
495 switch (chunk_type) {
498 /* header chunk also contains data; skip over the header portion*/
500 return AVERROR_INVALIDDATA;
507 if (!ea->audio_codec) {
508 avio_skip(pb, chunk_size);
510 } else if (ea->audio_codec == CODEC_ID_PCM_S16LE_PLANAR ||
511 ea->audio_codec == CODEC_ID_MP3) {
512 num_samples = avio_rl32(pb);
516 ret = av_get_packet(pb, pkt, chunk_size);
519 pkt->stream_index = ea->audio_stream_index;
521 switch (ea->audio_codec) {
522 case CODEC_ID_ADPCM_EA:
523 case CODEC_ID_ADPCM_EA_R1:
524 case CODEC_ID_ADPCM_EA_R2:
525 case CODEC_ID_ADPCM_IMA_EA_EACS:
526 pkt->duration = AV_RL32(pkt->data);
528 case CODEC_ID_ADPCM_EA_R3:
529 pkt->duration = AV_RB32(pkt->data);
531 case CODEC_ID_ADPCM_IMA_EA_SEAD:
532 pkt->duration = ret * 2 / ea->num_channels;
534 case CODEC_ID_PCM_S16LE_PLANAR:
536 pkt->duration = num_samples;
539 pkt->duration = chunk_size / (ea->bytes * ea->num_channels);
560 key = AV_PKT_FLAG_KEY;
565 avio_seek(pb, -8, SEEK_CUR); // include chunk preamble
567 goto get_video_packet;
570 avio_skip(pb, 8); // skip ea dct header
572 goto get_video_packet;
577 key = AV_PKT_FLAG_KEY;
580 ret = av_get_packet(pb, pkt, chunk_size);
583 pkt->stream_index = ea->video_stream_index;
589 avio_skip(pb, chunk_size);
597 AVInputFormat ff_ea_demuxer = {
599 .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts Multimedia Format"),
600 .priv_data_size = sizeof(EaDemuxContext),
601 .read_probe = ea_probe,
602 .read_header = ea_read_header,
603 .read_packet = ea_read_packet,