summaryrefslogtreecommitdiff
path: root/ffmpeg1/libavformat/wc3movie.c
diff options
context:
space:
mode:
Diffstat (limited to 'ffmpeg1/libavformat/wc3movie.c')
-rw-r--r--ffmpeg1/libavformat/wc3movie.c304
1 files changed, 0 insertions, 304 deletions
diff --git a/ffmpeg1/libavformat/wc3movie.c b/ffmpeg1/libavformat/wc3movie.c
deleted file mode 100644
index 657380a..0000000
--- a/ffmpeg1/libavformat/wc3movie.c
+++ /dev/null
@@ -1,304 +0,0 @@
-/*
- * Wing Commander III Movie (.mve) File Demuxer
- * Copyright (c) 2003 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
- * Wing Commander III Movie file demuxer
- * by Mike Melanson (melanson@pcisys.net)
- * for more information on the WC3 .mve file format, visit:
- * http://www.pcisys.net/~melanson/codecs/
- */
-
-#include "libavutil/channel_layout.h"
-#include "libavutil/intreadwrite.h"
-#include "libavutil/dict.h"
-#include "avformat.h"
-#include "internal.h"
-
-#define FORM_TAG MKTAG('F', 'O', 'R', 'M')
-#define MOVE_TAG MKTAG('M', 'O', 'V', 'E')
-#define PC__TAG MKTAG('_', 'P', 'C', '_')
-#define SOND_TAG MKTAG('S', 'O', 'N', 'D')
-#define BNAM_TAG MKTAG('B', 'N', 'A', 'M')
-#define SIZE_TAG MKTAG('S', 'I', 'Z', 'E')
-#define PALT_TAG MKTAG('P', 'A', 'L', 'T')
-#define INDX_TAG MKTAG('I', 'N', 'D', 'X')
-#define BRCH_TAG MKTAG('B', 'R', 'C', 'H')
-#define SHOT_TAG MKTAG('S', 'H', 'O', 'T')
-#define VGA__TAG MKTAG('V', 'G', 'A', ' ')
-#define TEXT_TAG MKTAG('T', 'E', 'X', 'T')
-#define AUDI_TAG MKTAG('A', 'U', 'D', 'I')
-
-/* video resolution unless otherwise specified */
-#define WC3_DEFAULT_WIDTH 320
-#define WC3_DEFAULT_HEIGHT 165
-
-/* always use the same PCM audio parameters */
-#define WC3_SAMPLE_RATE 22050
-#define WC3_AUDIO_CHANNELS 1
-#define WC3_AUDIO_BITS 16
-
-/* nice, constant framerate */
-#define WC3_FRAME_FPS 15
-
-#define PALETTE_SIZE (256 * 3)
-
-typedef struct Wc3DemuxContext {
- int width;
- int height;
- int64_t pts;
- int video_stream_index;
- int audio_stream_index;
-
- AVPacket vpkt;
-
-} Wc3DemuxContext;
-
-static int wc3_probe(AVProbeData *p)
-{
- if (p->buf_size < 12)
- return 0;
-
- if ((AV_RL32(&p->buf[0]) != FORM_TAG) ||
- (AV_RL32(&p->buf[8]) != MOVE_TAG))
- return 0;
-
- return AVPROBE_SCORE_MAX;
-}
-
-static int wc3_read_header(AVFormatContext *s)
-{
- Wc3DemuxContext *wc3 = s->priv_data;
- AVIOContext *pb = s->pb;
- unsigned int fourcc_tag;
- unsigned int size;
- AVStream *st;
- int ret = 0;
- char *buffer;
-
- /* default context members */
- wc3->width = WC3_DEFAULT_WIDTH;
- wc3->height = WC3_DEFAULT_HEIGHT;
- wc3->pts = 0;
- wc3->video_stream_index = wc3->audio_stream_index = 0;
- av_init_packet(&wc3->vpkt);
- wc3->vpkt.data = NULL; wc3->vpkt.size = 0;
-
- /* skip the first 3 32-bit numbers */
- avio_skip(pb, 12);
-
- /* traverse through the chunks and load the header information before
- * the first BRCH tag */
- fourcc_tag = avio_rl32(pb);
- size = (avio_rb32(pb) + 1) & (~1);
-
- do {
- switch (fourcc_tag) {
-
- case SOND_TAG:
- case INDX_TAG:
- /* SOND unknown, INDX unnecessary; ignore both */
- avio_skip(pb, size);
- break;
-
- case PC__TAG:
- /* number of palettes, unneeded */
- avio_skip(pb, 12);
- break;
-
- case BNAM_TAG:
- /* load up the name */
- buffer = av_malloc(size+1);
- if (!buffer)
- return AVERROR(ENOMEM);
- if ((ret = avio_read(pb, buffer, size)) != size)
- return AVERROR(EIO);
- buffer[size] = 0;
- av_dict_set(&s->metadata, "title", buffer,
- AV_DICT_DONT_STRDUP_VAL);
- break;
-
- case SIZE_TAG:
- /* video resolution override */
- wc3->width = avio_rl32(pb);
- wc3->height = avio_rl32(pb);
- break;
-
- case PALT_TAG:
- /* one of several palettes */
- avio_seek(pb, -8, SEEK_CUR);
- av_append_packet(pb, &wc3->vpkt, 8 + PALETTE_SIZE);
- break;
-
- default:
- av_log(s, AV_LOG_ERROR, " unrecognized WC3 chunk: %c%c%c%c (0x%02X%02X%02X%02X)\n",
- (uint8_t)fourcc_tag, (uint8_t)(fourcc_tag >> 8), (uint8_t)(fourcc_tag >> 16), (uint8_t)(fourcc_tag >> 24),
- (uint8_t)fourcc_tag, (uint8_t)(fourcc_tag >> 8), (uint8_t)(fourcc_tag >> 16), (uint8_t)(fourcc_tag >> 24));
- return AVERROR_INVALIDDATA;
- }
-
- fourcc_tag = avio_rl32(pb);
- /* chunk sizes are 16-bit aligned */
- size = (avio_rb32(pb) + 1) & (~1);
- if (url_feof(pb))
- return AVERROR(EIO);
-
- } while (fourcc_tag != BRCH_TAG);
-
- /* initialize the decoder streams */
- st = avformat_new_stream(s, NULL);
- if (!st)
- return AVERROR(ENOMEM);
- avpriv_set_pts_info(st, 33, 1, WC3_FRAME_FPS);
- wc3->video_stream_index = st->index;
- st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- st->codec->codec_id = AV_CODEC_ID_XAN_WC3;
- st->codec->codec_tag = 0; /* no fourcc */
- st->codec->width = wc3->width;
- st->codec->height = wc3->height;
-
- st = avformat_new_stream(s, NULL);
- if (!st)
- return AVERROR(ENOMEM);
- avpriv_set_pts_info(st, 33, 1, WC3_FRAME_FPS);
- wc3->audio_stream_index = st->index;
- st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
- st->codec->codec_tag = 1;
- st->codec->channels = WC3_AUDIO_CHANNELS;
- st->codec->channel_layout = AV_CH_LAYOUT_MONO;
- st->codec->bits_per_coded_sample = WC3_AUDIO_BITS;
- st->codec->sample_rate = WC3_SAMPLE_RATE;
- st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
- st->codec->bits_per_coded_sample;
- st->codec->block_align = WC3_AUDIO_BITS * WC3_AUDIO_CHANNELS;
-
- return 0;
-}
-
-static int wc3_read_packet(AVFormatContext *s,
- AVPacket *pkt)
-{
- Wc3DemuxContext *wc3 = s->priv_data;
- AVIOContext *pb = s->pb;
- unsigned int fourcc_tag;
- unsigned int size;
- int packet_read = 0;
- int ret = 0;
- unsigned char text[1024];
-
- while (!packet_read) {
-
- fourcc_tag = avio_rl32(pb);
- /* chunk sizes are 16-bit aligned */
- size = (avio_rb32(pb) + 1) & (~1);
- if (url_feof(pb))
- return AVERROR(EIO);
-
- switch (fourcc_tag) {
-
- case BRCH_TAG:
- /* no-op */
- break;
-
- case SHOT_TAG:
- /* load up new palette */
- avio_seek(pb, -8, SEEK_CUR);
- av_append_packet(pb, &wc3->vpkt, 8 + 4);
- break;
-
- case VGA__TAG:
- /* send out video chunk */
- avio_seek(pb, -8, SEEK_CUR);
- ret= av_append_packet(pb, &wc3->vpkt, 8 + size);
- // ignore error if we have some data
- if (wc3->vpkt.size > 0)
- ret = 0;
- *pkt = wc3->vpkt;
- wc3->vpkt.data = NULL; wc3->vpkt.size = 0;
- pkt->stream_index = wc3->video_stream_index;
- pkt->pts = wc3->pts;
- packet_read = 1;
- break;
-
- case TEXT_TAG:
- /* subtitle chunk */
-#if 0
- avio_skip(pb, size);
-#else
- if ((unsigned)size > sizeof(text) || (ret = avio_read(pb, text, size)) != size)
- ret = AVERROR(EIO);
- else {
- int i = 0;
- av_log (s, AV_LOG_DEBUG, "Subtitle time!\n");
- av_log (s, AV_LOG_DEBUG, " inglish: %s\n", &text[i + 1]);
- i += text[i] + 1;
- av_log (s, AV_LOG_DEBUG, " doytsch: %s\n", &text[i + 1]);
- i += text[i] + 1;
- av_log (s, AV_LOG_DEBUG, " fronsay: %s\n", &text[i + 1]);
- }
-#endif
- break;
-
- case AUDI_TAG:
- /* send out audio chunk */
- ret= av_get_packet(pb, pkt, size);
- pkt->stream_index = wc3->audio_stream_index;
- pkt->pts = wc3->pts;
-
- /* time to advance pts */
- wc3->pts++;
-
- packet_read = 1;
- break;
-
- default:
- av_log (s, AV_LOG_ERROR, " unrecognized WC3 chunk: %c%c%c%c (0x%02X%02X%02X%02X)\n",
- (uint8_t)fourcc_tag, (uint8_t)(fourcc_tag >> 8), (uint8_t)(fourcc_tag >> 16), (uint8_t)(fourcc_tag >> 24),
- (uint8_t)fourcc_tag, (uint8_t)(fourcc_tag >> 8), (uint8_t)(fourcc_tag >> 16), (uint8_t)(fourcc_tag >> 24));
- ret = AVERROR_INVALIDDATA;
- packet_read = 1;
- break;
- }
- }
-
- return ret;
-}
-
-static int wc3_read_close(AVFormatContext *s)
-{
- Wc3DemuxContext *wc3 = s->priv_data;
-
- if (wc3->vpkt.size > 0)
- av_free_packet(&wc3->vpkt);
-
- return 0;
-}
-
-AVInputFormat ff_wc3_demuxer = {
- .name = "wc3movie",
- .long_name = NULL_IF_CONFIG_SMALL("Wing Commander III movie"),
- .priv_data_size = sizeof(Wc3DemuxContext),
- .read_probe = wc3_probe,
- .read_header = wc3_read_header,
- .read_packet = wc3_read_packet,
- .read_close = wc3_read_close,
-};
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 17:45:44 +0000