diff options
Diffstat (limited to 'contrib/ffmpeg/libavformat/electronicarts.c')
| -rw-r--r-- | contrib/ffmpeg/libavformat/electronicarts.c | 473 |
1 files changed, 0 insertions, 473 deletions
diff --git a/contrib/ffmpeg/libavformat/electronicarts.c b/contrib/ffmpeg/libavformat/electronicarts.c deleted file mode 100644 index 0201e8200..000000000 --- a/contrib/ffmpeg/libavformat/electronicarts.c +++ /dev/null @@ -1,473 +0,0 @@ -/* Electronic Arts Multimedia File Demuxer - * Copyright (c) 2004 The ffmpeg Project - * - * 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 electronicarts.c - * Electronic Arts Multimedia file demuxer (WVE/UV2/etc.) - * by Robin Kay (komadori at gekkou.co.uk) - */ - -#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 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 MADk_TAG MKTAG('M', 'A', 'D', 'k') /* MAD i-frame */ -#define MPCh_TAG MKTAG('M', 'P', 'C', 'h') /* MPEG2 */ -#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 */ - -typedef struct EaDemuxContext { - int big_endian; - - int video_codec; - AVRational time_base; - int video_stream_index; - - int audio_codec; - int audio_stream_index; - int audio_frame_counter; - - int64_t audio_pts; - - int bytes; - int sample_rate; - int num_channels; - int num_samples; -} EaDemuxContext; - -static uint32_t read_arbitary(ByteIOContext *pb) { - uint8_t size, byte; - int i; - uint32_t word; - - size = get_byte(pb); - - word = 0; - for (i = 0; i < size; i++) { - byte = get_byte(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; - ByteIOContext *pb = s->pb; - int compression_type = -1, revision = -1, revision2 = -1; - - ea->bytes = 2; - ea->sample_rate = -1; - ea->num_channels = 1; - - while (inHeader) { - int inSubheader; - uint8_t byte; - byte = get_byte(pb); - - switch (byte) { - case 0xFD: - av_log (s, AV_LOG_INFO, "entered audio subheader\n"); - inSubheader = 1; - while (inSubheader) { - uint8_t subbyte; - subbyte = get_byte(pb); - - switch (subbyte) { - case 0x80: - revision = read_arbitary(pb); - av_log (s, AV_LOG_INFO, "revision (element 0x80) set to 0x%08x\n", revision); - break; - case 0x82: - ea->num_channels = read_arbitary(pb); - av_log (s, AV_LOG_INFO, "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_INFO, "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_INFO, "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_INFO, "num_samples (element 0x85) set to 0x%08x\n", ea->num_samples); - break; - case 0x8A: - av_log (s, AV_LOG_INFO, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb)); - av_log (s, AV_LOG_INFO, "exited audio subheader\n"); - inSubheader = 0; - break; - case 0xA0: - revision2 = read_arbitary(pb); - av_log (s, AV_LOG_INFO, "revision2 (element 0xA0) set to 0x%08x\n", revision2); - break; - case 0xFF: - av_log (s, AV_LOG_INFO, "end of header block reached (within audio subheader)\n"); - inSubheader = 0; - inHeader = 0; - break; - default: - av_log (s, AV_LOG_INFO, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb)); - break; - } - } - break; - case 0xFF: - av_log (s, AV_LOG_INFO, "end of header block reached\n"); - inHeader = 0; - break; - default: - av_log (s, AV_LOG_INFO, "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; - default: - 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; - ByteIOContext *pb = s->pb; - int compression_type; - - ea->sample_rate = ea->big_endian ? get_be32(pb) : get_le32(pb); - ea->bytes = get_byte(pb); /* 1=8-bit, 2=16-bit */ - ea->num_channels = get_byte(pb); - compression_type = get_byte(pb); - url_fskip(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; - ByteIOContext *pb = s->pb; - - ea->sample_rate = get_le32(pb); - ea->bytes = get_le32(pb); /* 1=8-bit, 2=16-bit */ - ea->num_channels = get_le32(pb); - ea->audio_codec = CODEC_ID_ADPCM_IMA_EA_SEAD; - - return 1; -} - -static int process_video_header_vp6(AVFormatContext *s) -{ - EaDemuxContext *ea = s->priv_data; - ByteIOContext *pb = s->pb; - - url_fskip(pb, 16); - ea->time_base.den = get_le32(pb); - ea->time_base.num = get_le32(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; - ByteIOContext *pb = s->pb; - int i; - - for (i=0; i<5 && (!ea->audio_codec || !ea->video_codec); i++) { - unsigned int startpos = url_ftell(pb); - int err = 0; - - blockid = get_le32(pb); - size = get_le32(pb); - if (i == 0) - ea->big_endian = size > 0x000FFFFF; - if (ea->big_endian) - size = bswap_32(size); - - switch (blockid) { - case ISNh_TAG: - if (get_le32(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 : - blockid = get_le32(pb); - if (blockid == GSTR_TAG) { - url_fskip(pb, 4); - } else if (blockid != 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 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; - } - - url_fseek(pb, startpos + size, SEEK_SET); - } - - url_fseek(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 kVGT_TAG: - case MADk_TAG: - case MPCh_TAG: - case MVhd_TAG: - case MVIh_TAG: - return AVPROBE_SCORE_MAX; - } - return 0; -} - -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 = CODEC_TYPE_VIDEO; - st->codec->codec_id = ea->video_codec; - st->codec->codec_tag = 0; /* no fourcc */ - st->codec->time_base = ea->time_base; - } - - if (ea->audio_codec) { - /* 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 = CODEC_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_sample = ea->bytes * 8; - st->codec->bit_rate = st->codec->channels * st->codec->sample_rate * - st->codec->bits_per_sample / 4; - st->codec->block_align = st->codec->channels*st->codec->bits_per_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; - ByteIOContext *pb = s->pb; - int ret = 0; - int packet_read = 0; - unsigned int chunk_type, chunk_size; - int key = 0; - - while (!packet_read) { - chunk_type = get_le32(pb); - chunk_size = (ea->big_endian ? get_be32(pb) : get_le32(pb)) - 8; - - switch (chunk_type) { - /* audio data */ - case ISNh_TAG: - /* header chunk also contains data; skip over the header portion*/ - url_fskip(pb, 32); - chunk_size -= 32; - case ISNd_TAG: - case SCDl_TAG: - case SNDC_TAG: - if (!ea->audio_codec) { - url_fskip(pb, chunk_size); - break; - } else if (ea->audio_codec == CODEC_ID_PCM_S16LE_PLANAR) { - url_fskip(pb, 12); /* planar header */ - chunk_size -= 12; - } - ret = av_get_packet(pb, pkt, chunk_size); - if (ret != chunk_size) - ret = AVERROR(EIO); - else { - 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; - 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: - ret = AVERROR(EIO); - packet_read = 1; - break; - - case MV0K_TAG: - key = PKT_FLAG_KEY; - case MV0F_TAG: - ret = av_get_packet(pb, pkt, chunk_size); - if (ret != chunk_size) - ret = AVERROR_IO; - else { - pkt->stream_index = ea->video_stream_index; - pkt->flags |= key; - } - packet_read = 1; - break; - - default: - url_fseek(pb, chunk_size, SEEK_CUR); - break; - } - } - - return ret; -} - -AVInputFormat ea_demuxer = { - "ea", - "Electronic Arts Multimedia Format", - sizeof(EaDemuxContext), - ea_probe, - ea_read_header, - ea_read_packet, -}; |