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
23 * @file libavformat/electronicarts.c
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 MPCh_TAG MKTAG('M', 'P', 'C', 'h') /* MPEG2 */
51 #define TGQs_TAG MKTAG('T', 'G', 'Q', 's') /* TGQ i-frame (appears in .TGQ files) */
52 #define pQGT_TAG MKTAG('p', 'Q', 'G', 'T') /* TGQ i-frame (appears in .UV files) */
53 #define MVhd_TAG MKTAG('M', 'V', 'h', 'd')
54 #define MV0K_TAG MKTAG('M', 'V', '0', 'K')
55 #define MV0F_TAG MKTAG('M', 'V', '0', 'F')
56 #define MVIh_TAG MKTAG('M', 'V', 'I', 'h') /* CMV header */
57 #define MVIf_TAG MKTAG('M', 'V', 'I', 'f') /* CMV i-frame */
59 typedef struct EaDemuxContext {
62 enum CodecID video_codec;
65 int video_stream_index;
67 enum CodecID audio_codec;
68 int audio_stream_index;
69 int audio_frame_counter;
79 static uint32_t read_arbitary(ByteIOContext *pb) {
87 for (i = 0; i < size; i++) {
97 * Process PT/GSTR sound header
98 * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
100 static int process_audio_header_elements(AVFormatContext *s)
103 EaDemuxContext *ea = s->priv_data;
104 ByteIOContext *pb = s->pb;
105 int compression_type = -1, revision = -1, revision2 = -1;
108 ea->sample_rate = -1;
109 ea->num_channels = 1;
118 av_log (s, AV_LOG_INFO, "entered audio subheader\n");
120 while (inSubheader) {
122 subbyte = get_byte(pb);
126 revision = read_arbitary(pb);
127 av_log (s, AV_LOG_INFO, "revision (element 0x80) set to 0x%08x\n", revision);
130 ea->num_channels = read_arbitary(pb);
131 av_log (s, AV_LOG_INFO, "num_channels (element 0x82) set to 0x%08x\n", ea->num_channels);
134 compression_type = read_arbitary(pb);
135 av_log (s, AV_LOG_INFO, "compression_type (element 0x83) set to 0x%08x\n", compression_type);
138 ea->sample_rate = read_arbitary(pb);
139 av_log (s, AV_LOG_INFO, "sample_rate (element 0x84) set to %i\n", ea->sample_rate);
142 ea->num_samples = read_arbitary(pb);
143 av_log (s, AV_LOG_INFO, "num_samples (element 0x85) set to 0x%08x\n", ea->num_samples);
146 av_log (s, AV_LOG_INFO, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb));
147 av_log (s, AV_LOG_INFO, "exited audio subheader\n");
151 revision2 = read_arbitary(pb);
152 av_log (s, AV_LOG_INFO, "revision2 (element 0xA0) set to 0x%08x\n", revision2);
155 av_log (s, AV_LOG_INFO, "end of header block reached (within audio subheader)\n");
160 av_log (s, AV_LOG_INFO, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb));
166 av_log (s, AV_LOG_INFO, "end of header block reached\n");
170 av_log (s, AV_LOG_INFO, "header element 0x%02x set to 0x%08x\n", byte, read_arbitary(pb));
175 switch (compression_type) {
176 case 0: ea->audio_codec = CODEC_ID_PCM_S16LE; break;
177 case 7: ea->audio_codec = CODEC_ID_ADPCM_EA; break;
180 case 1: ea->audio_codec = CODEC_ID_ADPCM_EA_R1; break;
181 case 2: ea->audio_codec = CODEC_ID_ADPCM_EA_R2; break;
182 case 3: ea->audio_codec = CODEC_ID_ADPCM_EA_R3; break;
185 av_log(s, AV_LOG_ERROR, "unsupported stream type; revision=%i\n", revision);
189 case 8: ea->audio_codec = CODEC_ID_PCM_S16LE_PLANAR; break;
190 case 10: ea->audio_codec = CODEC_ID_ADPCM_EA_R2; break;
191 case 16: ea->audio_codec = CODEC_ID_MP3; break;
194 av_log(s, AV_LOG_ERROR, "unsupported stream type; revision2=%i\n", revision2);
199 av_log(s, AV_LOG_ERROR, "unsupported stream type; compression_type=%i\n", compression_type);
203 if (ea->sample_rate == -1)
204 ea->sample_rate = revision==3 ? 48000 : 22050;
210 * Process EACS sound header
211 * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
213 static int process_audio_header_eacs(AVFormatContext *s)
215 EaDemuxContext *ea = s->priv_data;
216 ByteIOContext *pb = s->pb;
217 int compression_type;
219 ea->sample_rate = ea->big_endian ? get_be32(pb) : get_le32(pb);
220 ea->bytes = get_byte(pb); /* 1=8-bit, 2=16-bit */
221 ea->num_channels = get_byte(pb);
222 compression_type = get_byte(pb);
225 switch (compression_type) {
228 case 1: ea->audio_codec = CODEC_ID_PCM_S8; break;
229 case 2: ea->audio_codec = CODEC_ID_PCM_S16LE; break;
232 case 1: ea->audio_codec = CODEC_ID_PCM_MULAW; ea->bytes = 1; break;
233 case 2: ea->audio_codec = CODEC_ID_ADPCM_IMA_EA_EACS; break;
235 av_log (s, AV_LOG_ERROR, "unsupported stream type; audio compression_type=%i\n", compression_type);
242 * Process SEAD sound header
243 * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
245 static int process_audio_header_sead(AVFormatContext *s)
247 EaDemuxContext *ea = s->priv_data;
248 ByteIOContext *pb = s->pb;
250 ea->sample_rate = get_le32(pb);
251 ea->bytes = get_le32(pb); /* 1=8-bit, 2=16-bit */
252 ea->num_channels = get_le32(pb);
253 ea->audio_codec = CODEC_ID_ADPCM_IMA_EA_SEAD;
258 static int process_video_header_mdec(AVFormatContext *s)
260 EaDemuxContext *ea = s->priv_data;
261 ByteIOContext *pb = s->pb;
263 ea->width = get_le16(pb);
264 ea->height = get_le16(pb);
265 ea->time_base = (AVRational){1,15};
266 ea->video_codec = CODEC_ID_MDEC;
270 static int process_video_header_vp6(AVFormatContext *s)
272 EaDemuxContext *ea = s->priv_data;
273 ByteIOContext *pb = s->pb;
276 ea->time_base.den = get_le32(pb);
277 ea->time_base.num = get_le32(pb);
278 ea->video_codec = CODEC_ID_VP6;
284 * Process EA file header
285 * Returns 1 if the EA file is valid and successfully opened, 0 otherwise
287 static int process_ea_header(AVFormatContext *s) {
288 uint32_t blockid, size = 0;
289 EaDemuxContext *ea = s->priv_data;
290 ByteIOContext *pb = s->pb;
293 for (i=0; i<5 && (!ea->audio_codec || !ea->video_codec); i++) {
294 unsigned int startpos = url_ftell(pb);
297 blockid = get_le32(pb);
300 ea->big_endian = size > 0x000FFFFF;
302 size = bswap_32(size);
306 if (get_le32(pb) != EACS_TAG) {
307 av_log (s, AV_LOG_ERROR, "unknown 1SNh headerid\n");
310 err = process_audio_header_eacs(s);
315 blockid = get_le32(pb);
316 if (blockid == GSTR_TAG) {
318 } else if ((blockid & 0xFFFF)!=PT00_TAG) {
319 av_log (s, AV_LOG_ERROR, "unknown SCHl headerid\n");
322 err = process_audio_header_elements(s);
326 err = process_audio_header_sead(s);
330 ea->video_codec = CODEC_ID_CMV;
331 ea->time_base = (AVRational){0,0};
335 ea->video_codec = CODEC_ID_TGV;
336 ea->time_base = (AVRational){0,0};
340 err = process_video_header_mdec(s);
344 ea->video_codec = CODEC_ID_MPEG2VIDEO;
349 ea->video_codec = CODEC_ID_TGQ;
353 err = process_video_header_vp6(s);
358 av_log(s, AV_LOG_ERROR, "error parsing header: %i\n", err);
362 url_fseek(pb, startpos + size, SEEK_SET);
365 url_fseek(pb, 0, SEEK_SET);
371 static int ea_probe(AVProbeData *p)
373 switch (AV_RL32(&p->buf[0])) {
383 return AVPROBE_SCORE_MAX;
388 static int ea_read_header(AVFormatContext *s,
389 AVFormatParameters *ap)
391 EaDemuxContext *ea = s->priv_data;
394 if (!process_ea_header(s))
397 if (ea->video_codec) {
398 /* initialize the video decoder stream */
399 st = av_new_stream(s, 0);
401 return AVERROR(ENOMEM);
402 ea->video_stream_index = st->index;
403 st->codec->codec_type = CODEC_TYPE_VIDEO;
404 st->codec->codec_id = ea->video_codec;
405 st->codec->codec_tag = 0; /* no fourcc */
406 st->codec->time_base = ea->time_base;
407 st->codec->width = ea->width;
408 st->codec->height = ea->height;
411 if (ea->audio_codec) {
412 /* initialize the audio decoder stream */
413 st = av_new_stream(s, 0);
415 return AVERROR(ENOMEM);
416 av_set_pts_info(st, 33, 1, ea->sample_rate);
417 st->codec->codec_type = CODEC_TYPE_AUDIO;
418 st->codec->codec_id = ea->audio_codec;
419 st->codec->codec_tag = 0; /* no tag */
420 st->codec->channels = ea->num_channels;
421 st->codec->sample_rate = ea->sample_rate;
422 st->codec->bits_per_coded_sample = ea->bytes * 8;
423 st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
424 st->codec->bits_per_coded_sample / 4;
425 st->codec->block_align = st->codec->channels*st->codec->bits_per_coded_sample;
426 ea->audio_stream_index = st->index;
427 ea->audio_frame_counter = 0;
433 static int ea_read_packet(AVFormatContext *s,
436 EaDemuxContext *ea = s->priv_data;
437 ByteIOContext *pb = s->pb;
440 unsigned int chunk_type, chunk_size;
444 while (!packet_read) {
445 chunk_type = get_le32(pb);
446 chunk_size = (ea->big_endian ? get_be32(pb) : get_le32(pb)) - 8;
448 switch (chunk_type) {
451 /* header chunk also contains data; skip over the header portion*/
458 if (!ea->audio_codec) {
459 url_fskip(pb, chunk_size);
461 } else if (ea->audio_codec == CODEC_ID_PCM_S16LE_PLANAR ||
462 ea->audio_codec == CODEC_ID_MP3) {
463 num_samples = get_le32(pb);
467 ret = av_get_packet(pb, pkt, chunk_size);
468 if (ret != chunk_size)
471 pkt->stream_index = ea->audio_stream_index;
473 pkt->pts *= ea->audio_frame_counter;
474 pkt->pts /= ea->sample_rate;
476 switch (ea->audio_codec) {
477 case CODEC_ID_ADPCM_EA:
478 /* 2 samples/byte, 1 or 2 samples per frame depending
479 * on stereo; chunk also has 12-byte header */
480 ea->audio_frame_counter += ((chunk_size - 12) * 2) /
483 case CODEC_ID_PCM_S16LE_PLANAR:
485 ea->audio_frame_counter += num_samples;
488 ea->audio_frame_counter += chunk_size /
489 (ea->bytes * ea->num_channels);
513 url_fseek(pb, -8, SEEK_CUR); // include chunk preamble
515 goto get_video_packet;
518 url_fseek(pb, 8, SEEK_CUR); // skip ea dct header
520 goto get_video_packet;
527 ret = av_get_packet(pb, pkt, chunk_size);
528 if (ret != chunk_size)
531 pkt->stream_index = ea->video_stream_index;
538 url_fseek(pb, chunk_size, SEEK_CUR);
546 AVInputFormat ea_demuxer = {
548 NULL_IF_CONFIG_SMALL("Electronic Arts Multimedia Format"),
549 sizeof(EaDemuxContext),