summaryrefslogtreecommitdiff
path: root/contrib/ffmpeg/libavformat/electronicarts.c
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/ffmpeg/libavformat/electronicarts.c')
-rw-r--r--contrib/ffmpeg/libavformat/electronicarts.c291
1 files changed, 0 insertions, 291 deletions
diff --git a/contrib/ffmpeg/libavformat/electronicarts.c b/contrib/ffmpeg/libavformat/electronicarts.c
deleted file mode 100644
index 762d658ab..000000000
--- a/contrib/ffmpeg/libavformat/electronicarts.c
+++ /dev/null
@@ -1,291 +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 PT00_TAG MKTAG('P', 'T', 0x0, 0x0)
-#define SCDl_TAG MKTAG('S', 'C', 'D', 'l')
-#define pIQT_TAG MKTAG('p', 'I', 'Q', 'T')
-#define SCEl_TAG MKTAG('S', 'C', 'E', 'l')
-#define _TAG MKTAG('', '', '', '')
-
-#define EA_SAMPLE_RATE 22050
-#define EA_BITS_PER_SAMPLE 16
-#define EA_PREAMBLE_SIZE 8
-
-typedef struct EaDemuxContext {
- int width;
- int height;
- int video_stream_index;
- int track_count;
-
- int audio_stream_index;
- int audio_frame_counter;
-
- int64_t audio_pts;
- int64_t video_pts;
- int video_pts_inc;
- float fps;
-
- int num_channels;
- int num_samples;
- int compression_type;
-} 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 WVE file header
- * Returns 1 if the WVE file is valid and successfully opened, 0 otherwise
- */
-static int process_ea_header(AVFormatContext *s) {
- int inHeader;
- uint32_t blockid, size;
- EaDemuxContext *ea = (EaDemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
-
- if (get_buffer(pb, (void*)&blockid, 4) != 4) {
- return 0;
- }
- if (le2me_32(blockid) != SCHl_TAG) {
- return 0;
- }
-
- if (get_buffer(pb, (void*)&size, 4) != 4) {
- return 0;
- }
- size = le2me_32(size);
-
- if (get_buffer(pb, (void*)&blockid, 4) != 4) {
- return 0;
- }
- if (le2me_32(blockid) != PT00_TAG) {
- av_log (s, AV_LOG_ERROR, "PT header missing\n");
- return 0;
- }
-
- inHeader = 1;
- while (inHeader) {
- int inSubheader;
- uint8_t byte;
- byte = get_byte(pb) & 0xFF;
-
- 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) & 0xFF;
-
- switch (subbyte) {
- 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:
- ea->compression_type = read_arbitary(pb);
- av_log (s, AV_LOG_INFO, "compression_type (element 0x83) set to 0x%08x\n", ea->compression_type);
- 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;
- 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;
- }
- }
-
- if ((ea->num_channels != 2) || (ea->compression_type != 7)) {
- av_log (s, AV_LOG_ERROR, "unsupported stream type\n");
- return 0;
- }
-
- /* skip to the start of the data */
- url_fseek(pb, size, SEEK_SET);
-
- return 1;
-}
-
-
-static int ea_probe(AVProbeData *p)
-{
- if (p->buf_size < 4)
- return 0;
-
- if (AV_RL32(&p->buf[0]) != SCHl_TAG)
- return 0;
-
- return AVPROBE_SCORE_MAX;
-}
-
-static int ea_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
-{
- EaDemuxContext *ea = (EaDemuxContext *)s->priv_data;
- AVStream *st;
-
- if (!process_ea_header(s))
- return AVERROR_IO;
-
-#if 0
- /* initialize the video decoder stream */
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
- av_set_pts_info(st, 33, 1, 90000);
- ea->video_stream_index = st->index;
- st->codec->codec_type = CODEC_TYPE_VIDEO;
- st->codec->codec_id = CODEC_ID_EA_MJPEG;
- st->codec->codec_tag = 0; /* no fourcc */
-#endif
-
- /* initialize the audio decoder stream */
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
- av_set_pts_info(st, 33, 1, EA_SAMPLE_RATE);
- st->codec->codec_type = CODEC_TYPE_AUDIO;
- st->codec->codec_id = CODEC_ID_ADPCM_EA;
- 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_BITS_PER_SAMPLE;
- 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 char preamble[EA_PREAMBLE_SIZE];
- unsigned int chunk_type, chunk_size;
-
- while (!packet_read) {
-
- if (get_buffer(pb, preamble, EA_PREAMBLE_SIZE) != EA_PREAMBLE_SIZE)
- return AVERROR_IO;
- chunk_type = AV_RL32(&preamble[0]);
- chunk_size = AV_RL32(&preamble[4]) - EA_PREAMBLE_SIZE;
-
- switch (chunk_type) {
- /* audio data */
- case SCDl_TAG:
- ret = av_get_packet(pb, pkt, chunk_size);
- if (ret != chunk_size)
- ret = AVERROR_IO;
- else {
- pkt->stream_index = ea->audio_stream_index;
- pkt->pts = 90000;
- pkt->pts *= ea->audio_frame_counter;
- pkt->pts /= EA_SAMPLE_RATE;
-
- /* 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;
- }
-
- packet_read = 1;
- break;
-
- /* ending tag */
- case SCEl_TAG:
- ret = AVERROR_IO;
- packet_read = 1;
- break;
-
- default:
- url_fseek(pb, chunk_size, SEEK_CUR);
- break;
- }
-
- /* ending packet */
- if (chunk_type == SCEl_TAG) {
- }
- }
-
- return ret;
-}
-
-static int ea_read_close(AVFormatContext *s)
-{
-// EaDemuxContext *ea = (EaDemuxContext *)s->priv_data;
-
- return 0;
-}
-
-AVInputFormat ea_demuxer = {
- "ea",
- "Electronic Arts Multimedia Format",
- sizeof(EaDemuxContext),
- ea_probe,
- ea_read_header,
- ea_read_packet,
- ea_read_close,
-};
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-25 09:02:40 +0000