yading@11: /* Electronic Arts Multimedia File Demuxer yading@11: * Copyright (c) 2004 The ffmpeg Project yading@11: * Copyright (c) 2006-2008 Peter Ross yading@11: * yading@11: * This file is part of FFmpeg. yading@11: * yading@11: * FFmpeg is free software; you can redistribute it and/or yading@11: * modify it under the terms of the GNU Lesser General Public yading@11: * License as published by the Free Software Foundation; either yading@11: * version 2.1 of the License, or (at your option) any later version. yading@11: * yading@11: * FFmpeg is distributed in the hope that it will be useful, yading@11: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@11: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@11: * Lesser General Public License for more details. yading@11: * yading@11: * You should have received a copy of the GNU Lesser General Public yading@11: * License along with FFmpeg; if not, write to the Free Software yading@11: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@11: */ yading@11: yading@11: /** yading@11: * @file yading@11: * Electronic Arts Multimedia file demuxer (WVE/UV2/etc.) yading@11: * by Robin Kay (komadori at gekkou.co.uk) yading@11: */ yading@11: yading@11: #include "libavutil/intreadwrite.h" yading@11: #include "avformat.h" yading@11: #include "internal.h" yading@11: yading@11: #define SCHl_TAG MKTAG('S', 'C', 'H', 'l') yading@11: #define SEAD_TAG MKTAG('S', 'E', 'A', 'D') /* Sxxx header */ yading@11: #define SNDC_TAG MKTAG('S', 'N', 'D', 'C') /* Sxxx data */ yading@11: #define SEND_TAG MKTAG('S', 'E', 'N', 'D') /* Sxxx end */ yading@11: #define SHEN_TAG MKTAG('S', 'H', 'E', 'N') /* SxEN header */ yading@11: #define SDEN_TAG MKTAG('S', 'D', 'E', 'N') /* SxEN data */ yading@11: #define SEEN_TAG MKTAG('S', 'E', 'E', 'N') /* SxEN end */ yading@11: #define ISNh_TAG MKTAG('1', 'S', 'N', 'h') /* 1SNx header */ yading@11: #define EACS_TAG MKTAG('E', 'A', 'C', 'S') yading@11: #define ISNd_TAG MKTAG('1', 'S', 'N', 'd') /* 1SNx data */ yading@11: #define ISNe_TAG MKTAG('1', 'S', 'N', 'e') /* 1SNx end */ yading@11: #define PT00_TAG MKTAG('P', 'T', 0x0, 0x0) yading@11: #define GSTR_TAG MKTAG('G', 'S', 'T', 'R') yading@11: #define SCDl_TAG MKTAG('S', 'C', 'D', 'l') yading@11: #define SCEl_TAG MKTAG('S', 'C', 'E', 'l') yading@11: #define kVGT_TAG MKTAG('k', 'V', 'G', 'T') /* TGV i-frame */ yading@11: #define fVGT_TAG MKTAG('f', 'V', 'G', 'T') /* TGV p-frame */ yading@11: #define mTCD_TAG MKTAG('m', 'T', 'C', 'D') /* MDEC */ yading@11: #define MADk_TAG MKTAG('M', 'A', 'D', 'k') /* MAD i-frame */ yading@11: #define MADm_TAG MKTAG('M', 'A', 'D', 'm') /* MAD p-frame */ yading@11: #define MADe_TAG MKTAG('M', 'A', 'D', 'e') /* MAD lqp-frame */ yading@11: #define MPCh_TAG MKTAG('M', 'P', 'C', 'h') /* MPEG2 */ yading@11: #define TGQs_TAG MKTAG('T', 'G', 'Q', 's') /* TGQ i-frame (appears in .TGQ files) */ yading@11: #define pQGT_TAG MKTAG('p', 'Q', 'G', 'T') /* TGQ i-frame (appears in .UV files) */ yading@11: #define pIQT_TAG MKTAG('p', 'I', 'Q', 'T') /* TQI/UV2 i-frame (.UV2/.WVE) */ yading@11: #define MVhd_TAG MKTAG('M', 'V', 'h', 'd') yading@11: #define MV0K_TAG MKTAG('M', 'V', '0', 'K') yading@11: #define MV0F_TAG MKTAG('M', 'V', '0', 'F') yading@11: #define MVIh_TAG MKTAG('M', 'V', 'I', 'h') /* CMV header */ yading@11: #define MVIf_TAG MKTAG('M', 'V', 'I', 'f') /* CMV i-frame */ yading@11: yading@11: typedef struct EaDemuxContext { yading@11: int big_endian; yading@11: yading@11: enum AVCodecID video_codec; yading@11: AVRational time_base; yading@11: int width, height; yading@11: int nb_frames; yading@11: int video_stream_index; yading@11: yading@11: enum AVCodecID audio_codec; yading@11: int audio_stream_index; yading@11: yading@11: int bytes; yading@11: int sample_rate; yading@11: int num_channels; yading@11: int num_samples; yading@11: } EaDemuxContext; yading@11: yading@11: static uint32_t read_arbitary(AVIOContext *pb) { yading@11: uint8_t size, byte; yading@11: int i; yading@11: uint32_t word; yading@11: yading@11: size = avio_r8(pb); yading@11: yading@11: word = 0; yading@11: for (i = 0; i < size; i++) { yading@11: byte = avio_r8(pb); yading@11: word <<= 8; yading@11: word |= byte; yading@11: } yading@11: yading@11: return word; yading@11: } yading@11: yading@11: /* yading@11: * Process PT/GSTR sound header yading@11: * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx yading@11: */ yading@11: static int process_audio_header_elements(AVFormatContext *s) yading@11: { yading@11: int inHeader = 1; yading@11: EaDemuxContext *ea = s->priv_data; yading@11: AVIOContext *pb = s->pb; yading@11: int compression_type = -1, revision = -1, revision2 = -1; yading@11: yading@11: ea->bytes = 2; yading@11: ea->sample_rate = -1; yading@11: ea->num_channels = 1; yading@11: yading@11: while (!url_feof(pb) && inHeader) { yading@11: int inSubheader; yading@11: uint8_t byte; yading@11: byte = avio_r8(pb); yading@11: yading@11: switch (byte) { yading@11: case 0xFD: yading@11: av_log (s, AV_LOG_DEBUG, "entered audio subheader\n"); yading@11: inSubheader = 1; yading@11: while (!url_feof(pb) && inSubheader) { yading@11: uint8_t subbyte; yading@11: subbyte = avio_r8(pb); yading@11: yading@11: switch (subbyte) { yading@11: case 0x80: yading@11: revision = read_arbitary(pb); yading@11: av_log (s, AV_LOG_DEBUG, "revision (element 0x80) set to 0x%08x\n", revision); yading@11: break; yading@11: case 0x82: yading@11: ea->num_channels = read_arbitary(pb); yading@11: av_log (s, AV_LOG_DEBUG, "num_channels (element 0x82) set to 0x%08x\n", ea->num_channels); yading@11: break; yading@11: case 0x83: yading@11: compression_type = read_arbitary(pb); yading@11: av_log (s, AV_LOG_DEBUG, "compression_type (element 0x83) set to 0x%08x\n", compression_type); yading@11: break; yading@11: case 0x84: yading@11: ea->sample_rate = read_arbitary(pb); yading@11: av_log (s, AV_LOG_DEBUG, "sample_rate (element 0x84) set to %i\n", ea->sample_rate); yading@11: break; yading@11: case 0x85: yading@11: ea->num_samples = read_arbitary(pb); yading@11: av_log (s, AV_LOG_DEBUG, "num_samples (element 0x85) set to 0x%08x\n", ea->num_samples); yading@11: break; yading@11: case 0x8A: yading@11: av_log (s, AV_LOG_DEBUG, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb)); yading@11: av_log (s, AV_LOG_DEBUG, "exited audio subheader\n"); yading@11: inSubheader = 0; yading@11: break; yading@11: case 0xA0: yading@11: revision2 = read_arbitary(pb); yading@11: av_log (s, AV_LOG_DEBUG, "revision2 (element 0xA0) set to 0x%08x\n", revision2); yading@11: break; yading@11: case 0xFF: yading@11: av_log (s, AV_LOG_DEBUG, "end of header block reached (within audio subheader)\n"); yading@11: inSubheader = 0; yading@11: inHeader = 0; yading@11: break; yading@11: default: yading@11: av_log (s, AV_LOG_DEBUG, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb)); yading@11: break; yading@11: } yading@11: } yading@11: break; yading@11: case 0xFF: yading@11: av_log (s, AV_LOG_DEBUG, "end of header block reached\n"); yading@11: inHeader = 0; yading@11: break; yading@11: default: yading@11: av_log (s, AV_LOG_DEBUG, "header element 0x%02x set to 0x%08x\n", byte, read_arbitary(pb)); yading@11: break; yading@11: } yading@11: } yading@11: yading@11: switch (compression_type) { yading@11: case 0: ea->audio_codec = AV_CODEC_ID_PCM_S16LE; break; yading@11: case 7: ea->audio_codec = AV_CODEC_ID_ADPCM_EA; break; yading@11: case -1: yading@11: switch (revision) { yading@11: case 1: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R1; break; yading@11: case 2: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R2; break; yading@11: case 3: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R3; break; yading@11: case -1: break; yading@11: default: yading@11: avpriv_request_sample(s, "stream type; revision=%i", revision); yading@11: return 0; yading@11: } yading@11: switch (revision2) { yading@11: case 8: ea->audio_codec = AV_CODEC_ID_PCM_S16LE_PLANAR; break; yading@11: case 10: yading@11: switch (revision) { yading@11: case -1: yading@11: case 2: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R1; break; yading@11: case 3: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R2; break; yading@11: default: yading@11: avpriv_request_sample(s, "stream type; revision=%i, revision2=%i", revision, revision2); yading@11: return 0; yading@11: } yading@11: break; yading@11: case 16: ea->audio_codec = AV_CODEC_ID_MP3; break; yading@11: case -1: break; yading@11: default: yading@11: ea->audio_codec = AV_CODEC_ID_NONE; yading@11: avpriv_request_sample(s, "stream type; revision2=%i", revision2); yading@11: return 0; yading@11: } yading@11: break; yading@11: default: yading@11: avpriv_request_sample(s, "stream type; compression_type=%i", compression_type); yading@11: return 0; yading@11: } yading@11: yading@11: if (ea->sample_rate == -1) yading@11: ea->sample_rate = revision==3 ? 48000 : 22050; yading@11: yading@11: return 1; yading@11: } yading@11: yading@11: /* yading@11: * Process EACS sound header yading@11: * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx yading@11: */ yading@11: static int process_audio_header_eacs(AVFormatContext *s) yading@11: { yading@11: EaDemuxContext *ea = s->priv_data; yading@11: AVIOContext *pb = s->pb; yading@11: int compression_type; yading@11: yading@11: ea->sample_rate = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb); yading@11: ea->bytes = avio_r8(pb); /* 1=8-bit, 2=16-bit */ yading@11: ea->num_channels = avio_r8(pb); yading@11: compression_type = avio_r8(pb); yading@11: avio_skip(pb, 13); yading@11: yading@11: switch (compression_type) { yading@11: case 0: yading@11: switch (ea->bytes) { yading@11: case 1: ea->audio_codec = AV_CODEC_ID_PCM_S8; break; yading@11: case 2: ea->audio_codec = AV_CODEC_ID_PCM_S16LE; break; yading@11: } yading@11: break; yading@11: case 1: ea->audio_codec = AV_CODEC_ID_PCM_MULAW; ea->bytes = 1; break; yading@11: case 2: ea->audio_codec = AV_CODEC_ID_ADPCM_IMA_EA_EACS; break; yading@11: default: yading@11: avpriv_request_sample(s, "stream type; audio compression_type=%i", compression_type); yading@11: } yading@11: yading@11: return 1; yading@11: } yading@11: yading@11: /* yading@11: * Process SEAD sound header yading@11: * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx yading@11: */ yading@11: static int process_audio_header_sead(AVFormatContext *s) yading@11: { yading@11: EaDemuxContext *ea = s->priv_data; yading@11: AVIOContext *pb = s->pb; yading@11: yading@11: ea->sample_rate = avio_rl32(pb); yading@11: ea->bytes = avio_rl32(pb); /* 1=8-bit, 2=16-bit */ yading@11: ea->num_channels = avio_rl32(pb); yading@11: ea->audio_codec = AV_CODEC_ID_ADPCM_IMA_EA_SEAD; yading@11: yading@11: return 1; yading@11: } yading@11: yading@11: static int process_video_header_mdec(AVFormatContext *s) yading@11: { yading@11: EaDemuxContext *ea = s->priv_data; yading@11: AVIOContext *pb = s->pb; yading@11: avio_skip(pb, 4); yading@11: ea->width = avio_rl16(pb); yading@11: ea->height = avio_rl16(pb); yading@11: ea->time_base = (AVRational){1,15}; yading@11: ea->video_codec = AV_CODEC_ID_MDEC; yading@11: return 1; yading@11: } yading@11: yading@11: static int process_video_header_vp6(AVFormatContext *s) yading@11: { yading@11: EaDemuxContext *ea = s->priv_data; yading@11: AVIOContext *pb = s->pb; yading@11: yading@11: avio_skip(pb, 8); yading@11: ea->nb_frames = avio_rl32(pb); yading@11: avio_skip(pb, 4); yading@11: ea->time_base.den = avio_rl32(pb); yading@11: ea->time_base.num = avio_rl32(pb); yading@11: if (ea->time_base.den <= 0 || ea->time_base.num <= 0) { yading@11: av_log(s, AV_LOG_ERROR, "Timebase is invalid\n"); yading@11: return AVERROR_INVALIDDATA; yading@11: } yading@11: ea->video_codec = AV_CODEC_ID_VP6; yading@11: yading@11: return 1; yading@11: } yading@11: yading@11: static int process_video_header_cmv(AVFormatContext *s) yading@11: { yading@11: EaDemuxContext *ea = s->priv_data; yading@11: int fps; yading@11: yading@11: avio_skip(s->pb, 10); yading@11: fps = avio_rl16(s->pb); yading@11: if (fps) yading@11: ea->time_base = (AVRational){1, fps}; yading@11: ea->video_codec = AV_CODEC_ID_CMV; yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: /* yading@11: * Process EA file header yading@11: * Returns 1 if the EA file is valid and successfully opened, 0 otherwise yading@11: */ yading@11: static int process_ea_header(AVFormatContext *s) { yading@11: uint32_t blockid, size = 0; yading@11: EaDemuxContext *ea = s->priv_data; yading@11: AVIOContext *pb = s->pb; yading@11: int i; yading@11: yading@11: for (i=0; i<5 && (!ea->audio_codec || !ea->video_codec); i++) { yading@11: unsigned int startpos = avio_tell(pb); yading@11: int err = 0; yading@11: yading@11: blockid = avio_rl32(pb); yading@11: size = avio_rl32(pb); yading@11: if (i == 0) yading@11: ea->big_endian = size > 0x000FFFFF; yading@11: if (ea->big_endian) yading@11: size = av_bswap32(size); yading@11: yading@11: switch (blockid) { yading@11: case ISNh_TAG: yading@11: if (avio_rl32(pb) != EACS_TAG) { yading@11: avpriv_request_sample(s, "unknown 1SNh headerid"); yading@11: return 0; yading@11: } yading@11: err = process_audio_header_eacs(s); yading@11: break; yading@11: yading@11: case SCHl_TAG : yading@11: case SHEN_TAG : yading@11: blockid = avio_rl32(pb); yading@11: if (blockid == GSTR_TAG) { yading@11: avio_skip(pb, 4); yading@11: } else if ((blockid & 0xFFFF)!=PT00_TAG) { yading@11: avpriv_request_sample(s, "unknown SCHl headerid"); yading@11: return 0; yading@11: } yading@11: err = process_audio_header_elements(s); yading@11: break; yading@11: yading@11: case SEAD_TAG: yading@11: err = process_audio_header_sead(s); yading@11: break; yading@11: yading@11: case MVIh_TAG : yading@11: err = process_video_header_cmv(s); yading@11: break; yading@11: yading@11: case kVGT_TAG: yading@11: ea->video_codec = AV_CODEC_ID_TGV; yading@11: break; yading@11: yading@11: case mTCD_TAG : yading@11: err = process_video_header_mdec(s); yading@11: break; yading@11: yading@11: case MPCh_TAG: yading@11: ea->video_codec = AV_CODEC_ID_MPEG2VIDEO; yading@11: break; yading@11: yading@11: case pQGT_TAG: yading@11: case TGQs_TAG: yading@11: ea->video_codec = AV_CODEC_ID_TGQ; yading@11: break; yading@11: yading@11: case pIQT_TAG: yading@11: ea->video_codec = AV_CODEC_ID_TQI; yading@11: break; yading@11: yading@11: case MADk_TAG : yading@11: ea->video_codec = AV_CODEC_ID_MAD; yading@11: break; yading@11: yading@11: case MVhd_TAG : yading@11: err = process_video_header_vp6(s); yading@11: break; yading@11: } yading@11: yading@11: if (err < 0) { yading@11: av_log(s, AV_LOG_ERROR, "error parsing header: %i\n", err); yading@11: return err; yading@11: } yading@11: yading@11: avio_seek(pb, startpos + size, SEEK_SET); yading@11: } yading@11: yading@11: avio_seek(pb, 0, SEEK_SET); yading@11: yading@11: return 1; yading@11: } yading@11: yading@11: yading@11: static int ea_probe(AVProbeData *p) yading@11: { yading@11: switch (AV_RL32(&p->buf[0])) { yading@11: case ISNh_TAG: yading@11: case SCHl_TAG: yading@11: case SEAD_TAG: yading@11: case SHEN_TAG: yading@11: case kVGT_TAG: yading@11: case MADk_TAG: yading@11: case MPCh_TAG: yading@11: case MVhd_TAG: yading@11: case MVIh_TAG: yading@11: break; yading@11: default: yading@11: return 0; yading@11: } yading@11: if (AV_RL32(&p->buf[4]) > 0xfffff && AV_RB32(&p->buf[4]) > 0xfffff) yading@11: return 0; yading@11: return AVPROBE_SCORE_MAX; yading@11: } yading@11: yading@11: static int ea_read_header(AVFormatContext *s) yading@11: { yading@11: EaDemuxContext *ea = s->priv_data; yading@11: AVStream *st; yading@11: yading@11: if (process_ea_header(s)<=0) yading@11: return AVERROR(EIO); yading@11: yading@11: if (ea->video_codec) { yading@11: /* initialize the video decoder stream */ yading@11: st = avformat_new_stream(s, NULL); yading@11: if (!st) yading@11: return AVERROR(ENOMEM); yading@11: ea->video_stream_index = st->index; yading@11: st->codec->codec_type = AVMEDIA_TYPE_VIDEO; yading@11: st->codec->codec_id = ea->video_codec; yading@11: // parsing is necessary to make FFmpeg generate correct timestamps yading@11: if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) yading@11: st->need_parsing = AVSTREAM_PARSE_HEADERS; yading@11: st->codec->codec_tag = 0; /* no fourcc */ yading@11: st->codec->width = ea->width; yading@11: st->codec->height = ea->height; yading@11: st->duration = st->nb_frames = ea->nb_frames; yading@11: if (ea->time_base.num) yading@11: avpriv_set_pts_info(st, 64, ea->time_base.num, ea->time_base.den); yading@11: st->r_frame_rate = yading@11: st->avg_frame_rate = av_inv_q(ea->time_base); yading@11: } yading@11: yading@11: if (ea->audio_codec) { yading@11: if (ea->num_channels <= 0) { yading@11: av_log(s, AV_LOG_WARNING, "Unsupported number of channels: %d\n", ea->num_channels); yading@11: ea->audio_codec = 0; yading@11: return 1; yading@11: } yading@11: if (ea->sample_rate <= 0) { yading@11: av_log(s, AV_LOG_ERROR, "Unsupported sample rate: %d\n", ea->sample_rate); yading@11: ea->audio_codec = 0; yading@11: return 1; yading@11: } yading@11: if (ea->bytes <= 0) { yading@11: av_log(s, AV_LOG_ERROR, "Invalid number of bytes per sample: %d\n", ea->bytes); yading@11: ea->audio_codec = AV_CODEC_ID_NONE; yading@11: return 1; yading@11: } yading@11: yading@11: /* initialize the audio decoder stream */ yading@11: st = avformat_new_stream(s, NULL); yading@11: if (!st) yading@11: return AVERROR(ENOMEM); yading@11: avpriv_set_pts_info(st, 33, 1, ea->sample_rate); yading@11: st->codec->codec_type = AVMEDIA_TYPE_AUDIO; yading@11: st->codec->codec_id = ea->audio_codec; yading@11: st->codec->codec_tag = 0; /* no tag */ yading@11: st->codec->channels = ea->num_channels; yading@11: st->codec->sample_rate = ea->sample_rate; yading@11: st->codec->bits_per_coded_sample = ea->bytes * 8; yading@11: st->codec->bit_rate = st->codec->channels * st->codec->sample_rate * yading@11: st->codec->bits_per_coded_sample / 4; yading@11: st->codec->block_align = st->codec->channels*st->codec->bits_per_coded_sample; yading@11: ea->audio_stream_index = st->index; yading@11: st->start_time = 0; yading@11: } yading@11: yading@11: return 1; yading@11: } yading@11: yading@11: static int ea_read_packet(AVFormatContext *s, yading@11: AVPacket *pkt) yading@11: { yading@11: EaDemuxContext *ea = s->priv_data; yading@11: AVIOContext *pb = s->pb; yading@11: int ret = 0; yading@11: int packet_read = 0; yading@11: int partial_packet = 0; yading@11: unsigned int chunk_type, chunk_size; yading@11: int key = 0; yading@11: int av_uninit(num_samples); yading@11: yading@11: while (!packet_read || partial_packet) { yading@11: chunk_type = avio_rl32(pb); yading@11: chunk_size = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb); yading@11: if (chunk_size <= 8) yading@11: return AVERROR_INVALIDDATA; yading@11: chunk_size -= 8; yading@11: yading@11: switch (chunk_type) { yading@11: /* audio data */ yading@11: case ISNh_TAG: yading@11: /* header chunk also contains data; skip over the header portion*/ yading@11: if (chunk_size < 32) yading@11: return AVERROR_INVALIDDATA; yading@11: avio_skip(pb, 32); yading@11: chunk_size -= 32; yading@11: case ISNd_TAG: yading@11: case SCDl_TAG: yading@11: case SNDC_TAG: yading@11: case SDEN_TAG: yading@11: if (!ea->audio_codec) { yading@11: avio_skip(pb, chunk_size); yading@11: break; yading@11: } else if (ea->audio_codec == AV_CODEC_ID_PCM_S16LE_PLANAR || yading@11: ea->audio_codec == AV_CODEC_ID_MP3) { yading@11: num_samples = avio_rl32(pb); yading@11: avio_skip(pb, 8); yading@11: chunk_size -= 12; yading@11: } yading@11: if (partial_packet) { yading@11: avpriv_request_sample(s, "video header followed by audio packet"); yading@11: av_free_packet(pkt); yading@11: partial_packet = 0; yading@11: } yading@11: ret = av_get_packet(pb, pkt, chunk_size); yading@11: if (ret < 0) yading@11: return ret; yading@11: pkt->stream_index = ea->audio_stream_index; yading@11: yading@11: switch (ea->audio_codec) { yading@11: case AV_CODEC_ID_ADPCM_EA: yading@11: case AV_CODEC_ID_ADPCM_EA_R1: yading@11: case AV_CODEC_ID_ADPCM_EA_R2: yading@11: case AV_CODEC_ID_ADPCM_IMA_EA_EACS: yading@11: if (pkt->size >= 4) yading@11: pkt->duration = AV_RL32(pkt->data); yading@11: break; yading@11: case AV_CODEC_ID_ADPCM_EA_R3: yading@11: if (pkt->size >= 4) yading@11: pkt->duration = AV_RB32(pkt->data); yading@11: break; yading@11: case AV_CODEC_ID_ADPCM_IMA_EA_SEAD: yading@11: pkt->duration = ret * 2 / ea->num_channels; yading@11: break; yading@11: case AV_CODEC_ID_PCM_S16LE_PLANAR: yading@11: case AV_CODEC_ID_MP3: yading@11: pkt->duration = num_samples; yading@11: break; yading@11: default: yading@11: pkt->duration = chunk_size / (ea->bytes * ea->num_channels); yading@11: } yading@11: yading@11: packet_read = 1; yading@11: break; yading@11: yading@11: /* ending tag */ yading@11: case 0: yading@11: case ISNe_TAG: yading@11: case SCEl_TAG: yading@11: case SEND_TAG: yading@11: case SEEN_TAG: yading@11: ret = AVERROR(EIO); yading@11: packet_read = 1; yading@11: break; yading@11: yading@11: case MVIh_TAG: yading@11: case kVGT_TAG: yading@11: case pQGT_TAG: yading@11: case TGQs_TAG: yading@11: case MADk_TAG: yading@11: key = AV_PKT_FLAG_KEY; yading@11: case MVIf_TAG: yading@11: case fVGT_TAG: yading@11: case MADm_TAG: yading@11: case MADe_TAG: yading@11: avio_seek(pb, -8, SEEK_CUR); // include chunk preamble yading@11: chunk_size += 8; yading@11: goto get_video_packet; yading@11: yading@11: case mTCD_TAG: yading@11: avio_skip(pb, 8); // skip ea dct header yading@11: chunk_size -= 8; yading@11: goto get_video_packet; yading@11: yading@11: case MV0K_TAG: yading@11: case MPCh_TAG: yading@11: case pIQT_TAG: yading@11: key = AV_PKT_FLAG_KEY; yading@11: case MV0F_TAG: yading@11: get_video_packet: yading@11: if (partial_packet) { yading@11: ret = av_append_packet(pb, pkt, chunk_size); yading@11: } else yading@11: ret = av_get_packet(pb, pkt, chunk_size); yading@11: if (ret < 0) { yading@11: packet_read = 1; yading@11: break; yading@11: } yading@11: partial_packet = chunk_type == MVIh_TAG; yading@11: pkt->stream_index = ea->video_stream_index; yading@11: pkt->flags |= key; yading@11: packet_read = 1; yading@11: break; yading@11: yading@11: default: yading@11: avio_skip(pb, chunk_size); yading@11: break; yading@11: } yading@11: } yading@11: yading@11: if (ret < 0 && partial_packet) yading@11: av_free_packet(pkt); yading@11: return ret; yading@11: } yading@11: yading@11: AVInputFormat ff_ea_demuxer = { yading@11: .name = "ea", yading@11: .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts Multimedia"), yading@11: .priv_data_size = sizeof(EaDemuxContext), yading@11: .read_probe = ea_probe, yading@11: .read_header = ea_read_header, yading@11: .read_packet = ea_read_packet, yading@11: };