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- /* Electronic Arts Multimedia File Demuxer
- * Copyright (c) 2004 The ffmpeg Project
- * Copyright (c) 2006-2008 Peter Ross
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- /**
- * @file
- * Electronic Arts Multimedia file demuxer (WVE/UV2/etc.)
- * by Robin Kay (komadori at gekkou.co.uk)
- */
- #include "libavutil/intreadwrite.h"
- #include "avformat.h"
- #define SCHl_TAG MKTAG('S', 'C', 'H', 'l')
- #define SEAD_TAG MKTAG('S', 'E', 'A', 'D') /* Sxxx header */
- #define SNDC_TAG MKTAG('S', 'N', 'D', 'C') /* Sxxx data */
- #define SEND_TAG MKTAG('S', 'E', 'N', 'D') /* Sxxx end */
- #define SHEN_TAG MKTAG('S', 'H', 'E', 'N') /* SxEN header */
- #define SDEN_TAG MKTAG('S', 'D', 'E', 'N') /* SxEN data */
- #define SEEN_TAG MKTAG('S', 'E', 'E', 'N') /* SxEN end */
- #define ISNh_TAG MKTAG('1', 'S', 'N', 'h') /* 1SNx header */
- #define EACS_TAG MKTAG('E', 'A', 'C', 'S')
- #define ISNd_TAG MKTAG('1', 'S', 'N', 'd') /* 1SNx data */
- #define ISNe_TAG MKTAG('1', 'S', 'N', 'e') /* 1SNx end */
- #define PT00_TAG MKTAG('P', 'T', 0x0, 0x0)
- #define GSTR_TAG MKTAG('G', 'S', 'T', 'R')
- #define SCDl_TAG MKTAG('S', 'C', 'D', 'l')
- #define SCEl_TAG MKTAG('S', 'C', 'E', 'l')
- #define kVGT_TAG MKTAG('k', 'V', 'G', 'T') /* TGV i-frame */
- #define fVGT_TAG MKTAG('f', 'V', 'G', 'T') /* TGV p-frame */
- #define mTCD_TAG MKTAG('m', 'T', 'C', 'D') /* MDEC */
- #define MADk_TAG MKTAG('M', 'A', 'D', 'k') /* MAD i-frame */
- #define MADm_TAG MKTAG('M', 'A', 'D', 'm') /* MAD p-frame */
- #define MADe_TAG MKTAG('M', 'A', 'D', 'e') /* MAD lqp-frame */
- #define MPCh_TAG MKTAG('M', 'P', 'C', 'h') /* MPEG2 */
- #define TGQs_TAG MKTAG('T', 'G', 'Q', 's') /* TGQ i-frame (appears in .TGQ files) */
- #define pQGT_TAG MKTAG('p', 'Q', 'G', 'T') /* TGQ i-frame (appears in .UV files) */
- #define pIQT_TAG MKTAG('p', 'I', 'Q', 'T') /* TQI/UV2 i-frame (.UV2/.WVE) */
- #define MVhd_TAG MKTAG('M', 'V', 'h', 'd')
- #define MV0K_TAG MKTAG('M', 'V', '0', 'K')
- #define MV0F_TAG MKTAG('M', 'V', '0', 'F')
- #define MVIh_TAG MKTAG('M', 'V', 'I', 'h') /* CMV header */
- #define MVIf_TAG MKTAG('M', 'V', 'I', 'f') /* CMV i-frame */
- typedef struct EaDemuxContext {
- int big_endian;
- enum CodecID video_codec;
- AVRational time_base;
- int width, height;
- int video_stream_index;
- enum CodecID audio_codec;
- int audio_stream_index;
- int audio_frame_counter;
- int bytes;
- int sample_rate;
- int num_channels;
- int num_samples;
- } EaDemuxContext;
- static uint32_t read_arbitary(AVIOContext *pb) {
- uint8_t size, byte;
- int i;
- uint32_t word;
- size = avio_r8(pb);
- word = 0;
- for (i = 0; i < size; i++) {
- byte = avio_r8(pb);
- word <<= 8;
- word |= byte;
- }
- return word;
- }
- /*
- * Process PT/GSTR sound header
- * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
- */
- static int process_audio_header_elements(AVFormatContext *s)
- {
- int inHeader = 1;
- EaDemuxContext *ea = s->priv_data;
- AVIOContext *pb = s->pb;
- int compression_type = -1, revision = -1, revision2 = -1;
- ea->bytes = 2;
- ea->sample_rate = -1;
- ea->num_channels = 1;
- while (!url_feof(pb) && inHeader) {
- int inSubheader;
- uint8_t byte;
- byte = avio_r8(pb);
- switch (byte) {
- case 0xFD:
- av_log (s, AV_LOG_DEBUG, "entered audio subheader\n");
- inSubheader = 1;
- while (!url_feof(pb) && inSubheader) {
- uint8_t subbyte;
- subbyte = avio_r8(pb);
- switch (subbyte) {
- case 0x80:
- revision = read_arbitary(pb);
- av_log (s, AV_LOG_DEBUG, "revision (element 0x80) set to 0x%08x\n", revision);
- break;
- case 0x82:
- ea->num_channels = read_arbitary(pb);
- av_log (s, AV_LOG_DEBUG, "num_channels (element 0x82) set to 0x%08x\n", ea->num_channels);
- break;
- case 0x83:
- compression_type = read_arbitary(pb);
- av_log (s, AV_LOG_DEBUG, "compression_type (element 0x83) set to 0x%08x\n", compression_type);
- break;
- case 0x84:
- ea->sample_rate = read_arbitary(pb);
- av_log (s, AV_LOG_DEBUG, "sample_rate (element 0x84) set to %i\n", ea->sample_rate);
- break;
- case 0x85:
- ea->num_samples = read_arbitary(pb);
- av_log (s, AV_LOG_DEBUG, "num_samples (element 0x85) set to 0x%08x\n", ea->num_samples);
- break;
- case 0x8A:
- av_log (s, AV_LOG_DEBUG, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb));
- av_log (s, AV_LOG_DEBUG, "exited audio subheader\n");
- inSubheader = 0;
- break;
- case 0xA0:
- revision2 = read_arbitary(pb);
- av_log (s, AV_LOG_DEBUG, "revision2 (element 0xA0) set to 0x%08x\n", revision2);
- break;
- case 0xFF:
- av_log (s, AV_LOG_DEBUG, "end of header block reached (within audio subheader)\n");
- inSubheader = 0;
- inHeader = 0;
- break;
- default:
- av_log (s, AV_LOG_DEBUG, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb));
- break;
- }
- }
- break;
- case 0xFF:
- av_log (s, AV_LOG_DEBUG, "end of header block reached\n");
- inHeader = 0;
- break;
- default:
- av_log (s, AV_LOG_DEBUG, "header element 0x%02x set to 0x%08x\n", byte, read_arbitary(pb));
- break;
- }
- }
- switch (compression_type) {
- case 0: ea->audio_codec = CODEC_ID_PCM_S16LE; break;
- case 7: ea->audio_codec = CODEC_ID_ADPCM_EA; break;
- case -1:
- switch (revision) {
- case 1: ea->audio_codec = CODEC_ID_ADPCM_EA_R1; break;
- case 2: ea->audio_codec = CODEC_ID_ADPCM_EA_R2; break;
- case 3: ea->audio_codec = CODEC_ID_ADPCM_EA_R3; break;
- case -1: break;
- default:
- av_log(s, AV_LOG_ERROR, "unsupported stream type; revision=%i\n", revision);
- return 0;
- }
- switch (revision2) {
- case 8: ea->audio_codec = CODEC_ID_PCM_S16LE_PLANAR; break;
- case 10: ea->audio_codec = CODEC_ID_ADPCM_EA_R2; break;
- case 16: ea->audio_codec = CODEC_ID_MP3; break;
- case -1: break;
- default:
- ea->audio_codec = CODEC_ID_NONE;
- av_log(s, AV_LOG_ERROR, "unsupported stream type; revision2=%i\n", revision2);
- return 0;
- }
- break;
- default:
- av_log(s, AV_LOG_ERROR, "unsupported stream type; compression_type=%i\n", compression_type);
- return 0;
- }
- if (ea->sample_rate == -1)
- ea->sample_rate = revision==3 ? 48000 : 22050;
- return 1;
- }
- /*
- * Process EACS sound header
- * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
- */
- static int process_audio_header_eacs(AVFormatContext *s)
- {
- EaDemuxContext *ea = s->priv_data;
- AVIOContext *pb = s->pb;
- int compression_type;
- ea->sample_rate = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb);
- ea->bytes = avio_r8(pb); /* 1=8-bit, 2=16-bit */
- ea->num_channels = avio_r8(pb);
- compression_type = avio_r8(pb);
- avio_skip(pb, 13);
- switch (compression_type) {
- case 0:
- switch (ea->bytes) {
- case 1: ea->audio_codec = CODEC_ID_PCM_S8; break;
- case 2: ea->audio_codec = CODEC_ID_PCM_S16LE; break;
- }
- break;
- case 1: ea->audio_codec = CODEC_ID_PCM_MULAW; ea->bytes = 1; break;
- case 2: ea->audio_codec = CODEC_ID_ADPCM_IMA_EA_EACS; break;
- default:
- av_log (s, AV_LOG_ERROR, "unsupported stream type; audio compression_type=%i\n", compression_type);
- }
- return 1;
- }
- /*
- * Process SEAD sound header
- * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
- */
- static int process_audio_header_sead(AVFormatContext *s)
- {
- EaDemuxContext *ea = s->priv_data;
- AVIOContext *pb = s->pb;
- ea->sample_rate = avio_rl32(pb);
- ea->bytes = avio_rl32(pb); /* 1=8-bit, 2=16-bit */
- ea->num_channels = avio_rl32(pb);
- ea->audio_codec = CODEC_ID_ADPCM_IMA_EA_SEAD;
- return 1;
- }
- static int process_video_header_mdec(AVFormatContext *s)
- {
- EaDemuxContext *ea = s->priv_data;
- AVIOContext *pb = s->pb;
- avio_skip(pb, 4);
- ea->width = avio_rl16(pb);
- ea->height = avio_rl16(pb);
- ea->time_base = (AVRational){1,15};
- ea->video_codec = CODEC_ID_MDEC;
- return 1;
- }
- static int process_video_header_vp6(AVFormatContext *s)
- {
- EaDemuxContext *ea = s->priv_data;
- AVIOContext *pb = s->pb;
- avio_skip(pb, 16);
- ea->time_base.den = avio_rl32(pb);
- ea->time_base.num = avio_rl32(pb);
- ea->video_codec = CODEC_ID_VP6;
- return 1;
- }
- /*
- * Process EA file header
- * Returns 1 if the EA file is valid and successfully opened, 0 otherwise
- */
- static int process_ea_header(AVFormatContext *s) {
- uint32_t blockid, size = 0;
- EaDemuxContext *ea = s->priv_data;
- AVIOContext *pb = s->pb;
- int i;
- for (i=0; i<5 && (!ea->audio_codec || !ea->video_codec); i++) {
- unsigned int startpos = avio_tell(pb);
- int err = 0;
- blockid = avio_rl32(pb);
- size = avio_rl32(pb);
- if (i == 0)
- ea->big_endian = size > 0x000FFFFF;
- if (ea->big_endian)
- size = av_bswap32(size);
- switch (blockid) {
- case ISNh_TAG:
- if (avio_rl32(pb) != EACS_TAG) {
- av_log (s, AV_LOG_ERROR, "unknown 1SNh headerid\n");
- return 0;
- }
- err = process_audio_header_eacs(s);
- break;
- case SCHl_TAG :
- case SHEN_TAG :
- blockid = avio_rl32(pb);
- if (blockid == GSTR_TAG) {
- avio_skip(pb, 4);
- } else if ((blockid & 0xFFFF)!=PT00_TAG) {
- av_log (s, AV_LOG_ERROR, "unknown SCHl headerid\n");
- return 0;
- }
- err = process_audio_header_elements(s);
- break;
- case SEAD_TAG:
- err = process_audio_header_sead(s);
- break;
- case MVIh_TAG :
- ea->video_codec = CODEC_ID_CMV;
- break;
- case kVGT_TAG:
- ea->video_codec = CODEC_ID_TGV;
- break;
- case mTCD_TAG :
- err = process_video_header_mdec(s);
- break;
- case MPCh_TAG:
- ea->video_codec = CODEC_ID_MPEG2VIDEO;
- break;
- case pQGT_TAG:
- case TGQs_TAG:
- ea->video_codec = CODEC_ID_TGQ;
- break;
- case pIQT_TAG:
- ea->video_codec = CODEC_ID_TQI;
- break;
- case MADk_TAG :
- ea->video_codec = CODEC_ID_MAD;
- break;
- case MVhd_TAG :
- err = process_video_header_vp6(s);
- break;
- }
- if (err < 0) {
- av_log(s, AV_LOG_ERROR, "error parsing header: %i\n", err);
- return err;
- }
- avio_seek(pb, startpos + size, SEEK_SET);
- }
- avio_seek(pb, 0, SEEK_SET);
- return 1;
- }
- static int ea_probe(AVProbeData *p)
- {
- switch (AV_RL32(&p->buf[0])) {
- case ISNh_TAG:
- case SCHl_TAG:
- case SEAD_TAG:
- case SHEN_TAG:
- case kVGT_TAG:
- case MADk_TAG:
- case MPCh_TAG:
- case MVhd_TAG:
- case MVIh_TAG:
- break;
- default:
- return 0;
- }
- if (AV_RL32(&p->buf[4]) > 0xfffff && AV_RB32(&p->buf[4]) > 0xfffff)
- return 0;
- return AVPROBE_SCORE_MAX;
- }
- static int ea_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
- {
- EaDemuxContext *ea = s->priv_data;
- AVStream *st;
- if (!process_ea_header(s))
- return AVERROR(EIO);
- if (ea->video_codec) {
- /* initialize the video decoder stream */
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR(ENOMEM);
- ea->video_stream_index = st->index;
- st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- st->codec->codec_id = ea->video_codec;
- // parsing is necessary to make FFmpeg generate correct timestamps
- if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO)
- st->need_parsing = AVSTREAM_PARSE_HEADERS;
- st->codec->codec_tag = 0; /* no fourcc */
- if (ea->time_base.num)
- av_set_pts_info(st, 64, ea->time_base.num, ea->time_base.den);
- st->codec->width = ea->width;
- st->codec->height = ea->height;
- }
- if (ea->audio_codec) {
- if (ea->num_channels <= 0) {
- av_log(s, AV_LOG_WARNING, "Unsupported number of channels: %d\n", ea->num_channels);
- ea->audio_codec = 0;
- return 1;
- }
- if (ea->sample_rate <= 0) {
- av_log(s, AV_LOG_ERROR, "Unsupported sample rate: %d\n", ea->sample_rate);
- ea->audio_codec = 0;
- return 1;
- }
- /* initialize the audio decoder stream */
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR(ENOMEM);
- av_set_pts_info(st, 33, 1, ea->sample_rate);
- st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- st->codec->codec_id = ea->audio_codec;
- st->codec->codec_tag = 0; /* no tag */
- st->codec->channels = ea->num_channels;
- st->codec->sample_rate = ea->sample_rate;
- st->codec->bits_per_coded_sample = ea->bytes * 8;
- st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
- st->codec->bits_per_coded_sample / 4;
- st->codec->block_align = st->codec->channels*st->codec->bits_per_coded_sample;
- ea->audio_stream_index = st->index;
- ea->audio_frame_counter = 0;
- }
- return 1;
- }
- static int ea_read_packet(AVFormatContext *s,
- AVPacket *pkt)
- {
- EaDemuxContext *ea = s->priv_data;
- AVIOContext *pb = s->pb;
- int ret = 0;
- int packet_read = 0;
- unsigned int chunk_type, chunk_size;
- int key = 0;
- int av_uninit(num_samples);
- while (!packet_read) {
- chunk_type = avio_rl32(pb);
- chunk_size = (ea->big_endian ? avio_rb32(pb) : avio_rl32(pb)) - 8;
- switch (chunk_type) {
- /* audio data */
- case ISNh_TAG:
- /* header chunk also contains data; skip over the header portion*/
- avio_skip(pb, 32);
- chunk_size -= 32;
- case ISNd_TAG:
- case SCDl_TAG:
- case SNDC_TAG:
- case SDEN_TAG:
- if (!ea->audio_codec) {
- avio_skip(pb, chunk_size);
- break;
- } else if (ea->audio_codec == CODEC_ID_PCM_S16LE_PLANAR ||
- ea->audio_codec == CODEC_ID_MP3) {
- num_samples = avio_rl32(pb);
- avio_skip(pb, 8);
- chunk_size -= 12;
- }
- ret = av_get_packet(pb, pkt, chunk_size);
- if (ret < 0)
- return ret;
- pkt->stream_index = ea->audio_stream_index;
- pkt->pts = 90000;
- pkt->pts *= ea->audio_frame_counter;
- pkt->pts /= ea->sample_rate;
- switch (ea->audio_codec) {
- case CODEC_ID_ADPCM_EA:
- /* 2 samples/byte, 1 or 2 samples per frame depending
- * on stereo; chunk also has 12-byte header */
- ea->audio_frame_counter += ((chunk_size - 12) * 2) /
- ea->num_channels;
- break;
- case CODEC_ID_PCM_S16LE_PLANAR:
- case CODEC_ID_MP3:
- ea->audio_frame_counter += num_samples;
- break;
- default:
- ea->audio_frame_counter += chunk_size /
- (ea->bytes * ea->num_channels);
- }
- packet_read = 1;
- break;
- /* ending tag */
- case 0:
- case ISNe_TAG:
- case SCEl_TAG:
- case SEND_TAG:
- case SEEN_TAG:
- ret = AVERROR(EIO);
- packet_read = 1;
- break;
- case MVIh_TAG:
- case kVGT_TAG:
- case pQGT_TAG:
- case TGQs_TAG:
- case MADk_TAG:
- key = AV_PKT_FLAG_KEY;
- case MVIf_TAG:
- case fVGT_TAG:
- case MADm_TAG:
- case MADe_TAG:
- avio_seek(pb, -8, SEEK_CUR); // include chunk preamble
- chunk_size += 8;
- goto get_video_packet;
- case mTCD_TAG:
- avio_skip(pb, 8); // skip ea dct header
- chunk_size -= 8;
- goto get_video_packet;
- case MV0K_TAG:
- case MPCh_TAG:
- case pIQT_TAG:
- key = AV_PKT_FLAG_KEY;
- case MV0F_TAG:
- get_video_packet:
- ret = av_get_packet(pb, pkt, chunk_size);
- if (ret < 0)
- return ret;
- pkt->stream_index = ea->video_stream_index;
- pkt->flags |= key;
- packet_read = 1;
- break;
- default:
- avio_skip(pb, chunk_size);
- break;
- }
- }
- return ret;
- }
- AVInputFormat ff_ea_demuxer = {
- .name = "ea",
- .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts Multimedia Format"),
- .priv_data_size = sizeof(EaDemuxContext),
- .read_probe = ea_probe,
- .read_header = ea_read_header,
- .read_packet = ea_read_packet,
- };
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