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 FFmpeg.
7 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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"
31 #define SCHl_TAG MKTAG('S', 'C', 'H', 'l')
32 #define SEAD_TAG MKTAG('S', 'E', 'A', 'D') /* Sxxx header */
33 #define SNDC_TAG MKTAG('S', 'N', 'D', 'C') /* Sxxx data */
34 #define SEND_TAG MKTAG('S', 'E', 'N', 'D') /* Sxxx end */
35 #define SHEN_TAG MKTAG('S', 'H', 'E', 'N') /* SxEN header */
36 #define SDEN_TAG MKTAG('S', 'D', 'E', 'N') /* SxEN data */
37 #define SEEN_TAG MKTAG('S', 'E', 'E', 'N') /* SxEN end */
38 #define ISNh_TAG MKTAG('1', 'S', 'N', 'h') /* 1SNx header */
39 #define EACS_TAG MKTAG('E', 'A', 'C', 'S')
40 #define ISNd_TAG MKTAG('1', 'S', 'N', 'd') /* 1SNx data */
41 #define ISNe_TAG MKTAG('1', 'S', 'N', 'e') /* 1SNx end */
42 #define PT00_TAG MKTAG('P', 'T', 0x0, 0x0)
43 #define GSTR_TAG MKTAG('G', 'S', 'T', 'R')
44 #define SCDl_TAG MKTAG('S', 'C', 'D', 'l')
45 #define SCEl_TAG MKTAG('S', 'C', 'E', 'l')
46 #define kVGT_TAG MKTAG('k', 'V', 'G', 'T') /* TGV i-frame */
47 #define fVGT_TAG MKTAG('f', 'V', 'G', 'T') /* TGV p-frame */
48 #define mTCD_TAG MKTAG('m', 'T', 'C', 'D') /* MDEC */
49 #define MADk_TAG MKTAG('M', 'A', 'D', 'k') /* MAD i-frame */
50 #define MADm_TAG MKTAG('M', 'A', 'D', 'm') /* MAD p-frame */
51 #define MADe_TAG MKTAG('M', 'A', 'D', 'e') /* MAD lqp-frame */
52 #define MPCh_TAG MKTAG('M', 'P', 'C', 'h') /* MPEG2 */
53 #define TGQs_TAG MKTAG('T', 'G', 'Q', 's') /* TGQ i-frame (appears in .TGQ files) */
54 #define pQGT_TAG MKTAG('p', 'Q', 'G', 'T') /* TGQ i-frame (appears in .UV files) */
55 #define pIQT_TAG MKTAG('p', 'I', 'Q', 'T') /* TQI/UV2 i-frame (.UV2/.WVE) */
56 #define MVhd_TAG MKTAG('M', 'V', 'h', 'd')
57 #define MV0K_TAG MKTAG('M', 'V', '0', 'K')
58 #define MV0F_TAG MKTAG('M', 'V', '0', 'F')
59 #define MVIh_TAG MKTAG('M', 'V', 'I', 'h') /* CMV header */
60 #define MVIf_TAG MKTAG('M', 'V', 'I', 'f') /* CMV i-frame */
62 typedef struct EaDemuxContext {
65 enum CodecID video_codec;
68 int video_stream_index;
70 enum CodecID audio_codec;
71 int audio_stream_index;
72 int audio_frame_counter;
80 static uint32_t read_arbitary(ByteIOContext *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 ByteIOContext *pb = s->pb;
106 int compression_type = -1, revision = -1, revision2 = -1;
109 ea->sample_rate = -1;
110 ea->num_channels = 1;
121 av_log (s, AV_LOG_DEBUG, "entered audio subheader\n");
123 while (inSubheader) {
125 subbyte = get_byte(pb);
129 revision = read_arbitary(pb);
130 av_log (s, AV_LOG_DEBUG, "revision (element 0x80) set to 0x%08x\n", revision);
133 ea->num_channels = read_arbitary(pb);
134 av_log (s, AV_LOG_DEBUG, "num_channels (element 0x82) set to 0x%08x\n", ea->num_channels);
137 compression_type = read_arbitary(pb);
138 av_log (s, AV_LOG_DEBUG, "compression_type (element 0x83) set to 0x%08x\n", compression_type);
141 ea->sample_rate = read_arbitary(pb);
142 av_log (s, AV_LOG_DEBUG, "sample_rate (element 0x84) set to %i\n", ea->sample_rate);
145 ea->num_samples = read_arbitary(pb);
146 av_log (s, AV_LOG_DEBUG, "num_samples (element 0x85) set to 0x%08x\n", ea->num_samples);
149 av_log (s, AV_LOG_DEBUG, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb));
150 av_log (s, AV_LOG_DEBUG, "exited audio subheader\n");
154 revision2 = read_arbitary(pb);
155 av_log (s, AV_LOG_DEBUG, "revision2 (element 0xA0) set to 0x%08x\n", revision2);
158 av_log (s, AV_LOG_DEBUG, "end of header block reached (within audio subheader)\n");
163 av_log (s, AV_LOG_DEBUG, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb));
169 av_log (s, AV_LOG_DEBUG, "end of header block reached\n");
173 av_log (s, AV_LOG_DEBUG, "header element 0x%02x set to 0x%08x\n", byte, read_arbitary(pb));
178 switch (compression_type) {
179 case 0: ea->audio_codec = CODEC_ID_PCM_S16LE; break;
180 case 7: ea->audio_codec = CODEC_ID_ADPCM_EA; break;
183 case 1: ea->audio_codec = CODEC_ID_ADPCM_EA_R1; break;
184 case 2: ea->audio_codec = CODEC_ID_ADPCM_EA_R2; break;
185 case 3: ea->audio_codec = CODEC_ID_ADPCM_EA_R3; break;
188 av_log(s, AV_LOG_ERROR, "unsupported stream type; revision=%i\n", revision);
192 case 8: ea->audio_codec = CODEC_ID_PCM_S16LE_PLANAR; break;
193 case 10: ea->audio_codec = CODEC_ID_ADPCM_EA_R2; break;
194 case 16: ea->audio_codec = CODEC_ID_MP3; break;
197 ea->audio_codec = CODEC_ID_NONE;
198 av_log(s, AV_LOG_ERROR, "unsupported stream type; revision2=%i\n", revision2);
203 av_log(s, AV_LOG_ERROR, "unsupported stream type; compression_type=%i\n", compression_type);
207 if (ea->sample_rate == -1)
208 ea->sample_rate = revision==3 ? 48000 : 22050;
214 * Process EACS sound header
215 * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
217 static int process_audio_header_eacs(AVFormatContext *s)
219 EaDemuxContext *ea = s->priv_data;
220 ByteIOContext *pb = s->pb;
221 int compression_type;
223 ea->sample_rate = ea->big_endian ? get_be32(pb) : get_le32(pb);
224 ea->bytes = get_byte(pb); /* 1=8-bit, 2=16-bit */
225 ea->num_channels = get_byte(pb);
226 compression_type = get_byte(pb);
229 switch (compression_type) {
232 case 1: ea->audio_codec = CODEC_ID_PCM_S8; break;
233 case 2: ea->audio_codec = CODEC_ID_PCM_S16LE; break;
236 case 1: ea->audio_codec = CODEC_ID_PCM_MULAW; ea->bytes = 1; break;
237 case 2: ea->audio_codec = CODEC_ID_ADPCM_IMA_EA_EACS; break;
239 av_log (s, AV_LOG_ERROR, "unsupported stream type; audio compression_type=%i\n", compression_type);
246 * Process SEAD sound header
247 * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
249 static int process_audio_header_sead(AVFormatContext *s)
251 EaDemuxContext *ea = s->priv_data;
252 ByteIOContext *pb = s->pb;
254 ea->sample_rate = get_le32(pb);
255 ea->bytes = get_le32(pb); /* 1=8-bit, 2=16-bit */
256 ea->num_channels = get_le32(pb);
257 ea->audio_codec = CODEC_ID_ADPCM_IMA_EA_SEAD;
262 static int process_video_header_mdec(AVFormatContext *s)
264 EaDemuxContext *ea = s->priv_data;
265 ByteIOContext *pb = s->pb;
267 ea->width = get_le16(pb);
268 ea->height = get_le16(pb);
269 ea->time_base = (AVRational){1,15};
270 ea->video_codec = CODEC_ID_MDEC;
274 static int process_video_header_vp6(AVFormatContext *s)
276 EaDemuxContext *ea = s->priv_data;
277 ByteIOContext *pb = s->pb;
280 ea->time_base.den = get_le32(pb);
281 ea->time_base.num = get_le32(pb);
282 ea->video_codec = CODEC_ID_VP6;
288 * Process EA file header
289 * Returns 1 if the EA file is valid and successfully opened, 0 otherwise
291 static int process_ea_header(AVFormatContext *s) {
292 uint32_t blockid, size = 0;
293 EaDemuxContext *ea = s->priv_data;
294 ByteIOContext *pb = s->pb;
297 for (i=0; i<5 && (!ea->audio_codec || !ea->video_codec); i++) {
298 unsigned int startpos = url_ftell(pb);
301 blockid = get_le32(pb);
304 ea->big_endian = size > 0x000FFFFF;
306 size = av_bswap32(size);
310 if (get_le32(pb) != EACS_TAG) {
311 av_log (s, AV_LOG_ERROR, "unknown 1SNh headerid\n");
314 err = process_audio_header_eacs(s);
319 blockid = get_le32(pb);
320 if (blockid == GSTR_TAG) {
322 } else if ((blockid & 0xFFFF)!=PT00_TAG) {
323 av_log (s, AV_LOG_ERROR, "unknown SCHl headerid\n");
326 err = process_audio_header_elements(s);
330 err = process_audio_header_sead(s);
334 ea->video_codec = CODEC_ID_CMV;
335 ea->time_base = (AVRational){0,0};
339 ea->video_codec = CODEC_ID_TGV;
340 ea->time_base = (AVRational){0,0};
344 err = process_video_header_mdec(s);
348 ea->video_codec = CODEC_ID_MPEG2VIDEO;
353 ea->video_codec = CODEC_ID_TGQ;
357 ea->video_codec = CODEC_ID_TQI;
361 ea->video_codec = CODEC_ID_MAD;
365 err = process_video_header_vp6(s);
370 av_log(s, AV_LOG_ERROR, "error parsing header: %i\n", err);
374 url_fseek(pb, startpos + size, SEEK_SET);
377 url_fseek(pb, 0, SEEK_SET);
383 static int ea_probe(AVProbeData *p)
385 switch (AV_RL32(&p->buf[0])) {
399 if (AV_RL32(&p->buf[4]) > 0xfffff && AV_RB32(&p->buf[4]) > 0xfffff)
401 return AVPROBE_SCORE_MAX;
404 static int ea_read_header(AVFormatContext *s,
405 AVFormatParameters *ap)
407 EaDemuxContext *ea = s->priv_data;
410 if (!process_ea_header(s))
413 if (ea->video_codec) {
414 /* initialize the video decoder stream */
415 st = av_new_stream(s, 0);
417 return AVERROR(ENOMEM);
418 ea->video_stream_index = st->index;
419 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
420 st->codec->codec_id = ea->video_codec;
421 st->codec->codec_tag = 0; /* no fourcc */
422 st->codec->time_base = ea->time_base;
423 st->codec->width = ea->width;
424 st->codec->height = ea->height;
427 if (ea->audio_codec) {
428 if (ea->num_channels <= 0) {
429 av_log(s, AV_LOG_WARNING, "Unsupported number of channels: %d\n", ea->num_channels);
433 if (ea->sample_rate <= 0) {
434 av_log(s, AV_LOG_ERROR, "Unsupported sample rate: %d\n", ea->sample_rate);
439 /* initialize the audio decoder stream */
440 st = av_new_stream(s, 0);
442 return AVERROR(ENOMEM);
443 av_set_pts_info(st, 33, 1, ea->sample_rate);
444 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
445 st->codec->codec_id = ea->audio_codec;
446 st->codec->codec_tag = 0; /* no tag */
447 st->codec->channels = ea->num_channels;
448 st->codec->sample_rate = ea->sample_rate;
449 st->codec->bits_per_coded_sample = ea->bytes * 8;
450 st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
451 st->codec->bits_per_coded_sample / 4;
452 st->codec->block_align = st->codec->channels*st->codec->bits_per_coded_sample;
453 ea->audio_stream_index = st->index;
454 ea->audio_frame_counter = 0;
460 static int ea_read_packet(AVFormatContext *s,
463 EaDemuxContext *ea = s->priv_data;
464 ByteIOContext *pb = s->pb;
467 unsigned int chunk_type, chunk_size;
469 int av_uninit(num_samples);
471 while (!packet_read) {
472 chunk_type = get_le32(pb);
473 chunk_size = (ea->big_endian ? get_be32(pb) : get_le32(pb)) - 8;
475 switch (chunk_type) {
478 /* header chunk also contains data; skip over the header portion*/
485 if (!ea->audio_codec) {
486 url_fskip(pb, chunk_size);
488 } else if (ea->audio_codec == CODEC_ID_PCM_S16LE_PLANAR ||
489 ea->audio_codec == CODEC_ID_MP3) {
490 num_samples = get_le32(pb);
494 ret = av_get_packet(pb, pkt, chunk_size);
497 pkt->stream_index = ea->audio_stream_index;
499 pkt->pts *= ea->audio_frame_counter;
500 pkt->pts /= ea->sample_rate;
502 switch (ea->audio_codec) {
503 case CODEC_ID_ADPCM_EA:
504 /* 2 samples/byte, 1 or 2 samples per frame depending
505 * on stereo; chunk also has 12-byte header */
506 ea->audio_frame_counter += ((chunk_size - 12) * 2) /
509 case CODEC_ID_PCM_S16LE_PLANAR:
511 ea->audio_frame_counter += num_samples;
514 ea->audio_frame_counter += chunk_size /
515 (ea->bytes * ea->num_channels);
536 key = AV_PKT_FLAG_KEY;
541 url_fseek(pb, -8, SEEK_CUR); // include chunk preamble
543 goto get_video_packet;
546 url_fseek(pb, 8, SEEK_CUR); // skip ea dct header
548 goto get_video_packet;
553 key = AV_PKT_FLAG_KEY;
556 ret = av_get_packet(pb, pkt, chunk_size);
559 pkt->stream_index = ea->video_stream_index;
565 url_fseek(pb, chunk_size, SEEK_CUR);
573 AVInputFormat ea_demuxer = {
575 NULL_IF_CONFIG_SMALL("Electronic Arts Multimedia Format"),
576 sizeof(EaDemuxContext),