+++ /dev/null
-/*
- * Wing Commander III Movie (.mve) File Demuxer
- * Copyright (c) 2003 The ffmpeg Project
- *
- * This library 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 of the License, or (at your option) any later version.
- *
- * This library 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/**
- * @file wc3movie.c
- * 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 "avformat.h"
-
-#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
-#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
- (((uint8_t*)(x))[2] << 16) | \
- (((uint8_t*)(x))[1] << 8) | \
- ((uint8_t*)(x))[0])
-#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
-#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
- (((uint8_t*)(x))[1] << 16) | \
- (((uint8_t*)(x))[2] << 8) | \
- ((uint8_t*)(x))[3])
-
-#define WC3_PREAMBLE_SIZE 8
-
-#define FOURCC_TAG( ch0, ch1, ch2, ch3 ) \
- ( (long)(unsigned char)(ch0) | \
- ( (long)(unsigned char)(ch1) << 8 ) | \
- ( (long)(unsigned char)(ch2) << 16 ) | \
- ( (long)(unsigned char)(ch3) << 24 ) )
-
-#define FORM_TAG FOURCC_TAG('F', 'O', 'R', 'M')
-#define MOVE_TAG FOURCC_TAG('M', 'O', 'V', 'E')
-#define _PC__TAG FOURCC_TAG('_', 'P', 'C', '_')
-#define SOND_TAG FOURCC_TAG('S', 'O', 'N', 'D')
-#define BNAM_TAG FOURCC_TAG('B', 'N', 'A', 'M')
-#define SIZE_TAG FOURCC_TAG('S', 'I', 'Z', 'E')
-#define PALT_TAG FOURCC_TAG('P', 'A', 'L', 'T')
-#define INDX_TAG FOURCC_TAG('I', 'N', 'D', 'X')
-#define BRCH_TAG FOURCC_TAG('B', 'R', 'C', 'H')
-#define SHOT_TAG FOURCC_TAG('S', 'H', 'O', 'T')
-#define VGA__TAG FOURCC_TAG('V', 'G', 'A', ' ')
-#define TEXT_TAG FOURCC_TAG('T', 'E', 'X', 'T')
-#define AUDI_TAG FOURCC_TAG('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_PTS_INC (90000 / 15)
-
-#define PALETTE_SIZE (256 * 3)
-#define PALETTE_COUNT 256
-
-typedef struct Wc3DemuxContext {
- int width;
- int height;
- unsigned char *palettes;
- int palette_count;
- int64_t pts;
- int video_stream_index;
- int audio_stream_index;
-
- AVPaletteControl palette_control;
-
-} Wc3DemuxContext;
-
-/* bizarre palette lookup table */
-static const unsigned char wc3_pal_lookup[] = {
- 0x00, 0x03, 0x05, 0x07, 0x09, 0x0B, 0x0D, 0x0E,
- 0x10, 0x12, 0x13, 0x15, 0x16, 0x18, 0x19, 0x1A,
- 0x1C, 0x1D, 0x1F, 0x20, 0x21, 0x23, 0x24, 0x25,
- 0x27, 0x28, 0x29, 0x2A, 0x2C, 0x2D, 0x2E, 0x2F,
- 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x38, 0x39,
- 0x3A, 0x3B, 0x3C, 0x3D, 0x3F, 0x40, 0x41, 0x42,
- 0x43, 0x44, 0x45, 0x46, 0x48, 0x49, 0x4A, 0x4B,
- 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53,
- 0x54, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C,
- 0x5D, 0x5E, 0x5F, 0x60, 0x61, 0x62, 0x63, 0x64,
- 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C,
- 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74,
- 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C,
- 0x7D, 0x7D, 0x7E, 0x7F, 0x80, 0x81, 0x82, 0x83,
- 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B,
- 0x8C, 0x8D, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92,
- 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x99,
- 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, 0xA0, 0xA1,
- 0xA2, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
- 0xA9, 0xAA, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF,
- 0xB0, 0xB1, 0xB2, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
- 0xB7, 0xB8, 0xB9, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD,
- 0xBE, 0xBF, 0xBF, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4,
- 0xC5, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB,
- 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD0, 0xD1,
- 0xD2, 0xD3, 0xD4, 0xD5, 0xD5, 0xD6, 0xD7, 0xD8,
- 0xD9, 0xDA, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
- 0xDF, 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE4, 0xE5,
- 0xE6, 0xE7, 0xE8, 0xE9, 0xE9, 0xEA, 0xEB, 0xEC,
- 0xED, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, 0xF1, 0xF2,
- 0xF3, 0xF4, 0xF5, 0xF6, 0xF6, 0xF7, 0xF8, 0xF9,
- 0xFA, 0xFA, 0xFB, 0xFC, 0xFD, 0xFD, 0xFD, 0xFD
-};
-
-
-static int wc3_probe(AVProbeData *p)
-{
- if (p->buf_size < 12)
- return 0;
-
- if ((LE_32(&p->buf[0]) != FORM_TAG) ||
- (LE_32(&p->buf[8]) != MOVE_TAG))
- return 0;
-
- return AVPROBE_SCORE_MAX;
-}
-
-static int wc3_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
-{
- Wc3DemuxContext *wc3 = (Wc3DemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
- unsigned int fourcc_tag;
- unsigned int size;
- AVStream *st;
- unsigned char preamble[WC3_PREAMBLE_SIZE];
- int ret = 0;
- int current_palette = 0;
- int bytes_to_read;
- int i;
- unsigned char rotate;
-
- /* default context members */
- wc3->width = WC3_DEFAULT_WIDTH;
- wc3->height = WC3_DEFAULT_HEIGHT;
- wc3->palettes = NULL;
- wc3->palette_count = 0;
- wc3->pts = 0;
- wc3->video_stream_index = wc3->audio_stream_index = 0;
-
- /* skip the first 3 32-bit numbers */
- url_fseek(pb, 12, SEEK_CUR);
-
- /* traverse through the chunks and load the header information before
- * the first BRCH tag */
- if ((ret = get_buffer(pb, preamble, WC3_PREAMBLE_SIZE)) !=
- WC3_PREAMBLE_SIZE)
- return -EIO;
- fourcc_tag = LE_32(&preamble[0]);
- size = (BE_32(&preamble[4]) + 1) & (~1);
-
- do {
- switch (fourcc_tag) {
-
- case SOND_TAG:
- case INDX_TAG:
- /* SOND unknown, INDX unnecessary; ignore both */
- url_fseek(pb, size, SEEK_CUR);
- break;
-
- case _PC__TAG:
- /* need the number of palettes */
- url_fseek(pb, 8, SEEK_CUR);
- if ((ret = get_buffer(pb, preamble, 4)) != 4)
- return -EIO;
- wc3->palette_count = LE_32(&preamble[0]);
- wc3->palettes = av_malloc(wc3->palette_count * PALETTE_SIZE);
- break;
-
- case BNAM_TAG:
- /* load up the name */
- if (size < 512)
- bytes_to_read = size;
- else
- bytes_to_read = 512;
- if ((ret = get_buffer(pb, s->title, bytes_to_read)) != bytes_to_read)
- return -EIO;
- break;
-
- case SIZE_TAG:
- /* video resolution override */
- if ((ret = get_buffer(pb, preamble, WC3_PREAMBLE_SIZE)) !=
- WC3_PREAMBLE_SIZE)
- return -EIO;
- wc3->width = LE_32(&preamble[0]);
- wc3->height = LE_32(&preamble[4]);
- break;
-
- case PALT_TAG:
- /* one of several palettes */
- if (current_palette >= wc3->palette_count)
- return AVERROR_INVALIDDATA;
- if ((ret = get_buffer(pb,
- &wc3->palettes[current_palette * PALETTE_SIZE],
- PALETTE_SIZE)) != PALETTE_SIZE)
- return -EIO;
-
- /* transform the current palette in place */
- for (i = current_palette * PALETTE_SIZE;
- i < (current_palette + 1) * PALETTE_SIZE; i++) {
- /* rotate each palette component left by 2 and use the result
- * as an index into the color component table */
- rotate = ((wc3->palettes[i] << 2) & 0xFF) |
- ((wc3->palettes[i] >> 6) & 0xFF);
- wc3->palettes[i] = wc3_pal_lookup[rotate];
- }
- current_palette++;
- break;
-
- default:
- printf (" unrecognized WC3 chunk: %c%c%c%c (0x%02X%02X%02X%02X)\n",
- preamble[0], preamble[1], preamble[2], preamble[3],
- preamble[0], preamble[1], preamble[2], preamble[3]);
- return AVERROR_INVALIDDATA;
- break;
- }
-
- if ((ret = get_buffer(pb, preamble, WC3_PREAMBLE_SIZE)) !=
- WC3_PREAMBLE_SIZE)
- return -EIO;
- fourcc_tag = LE_32(&preamble[0]);
- /* chunk sizes are 16-bit aligned */
- size = (BE_32(&preamble[4]) + 1) & (~1);
-
- } while (fourcc_tag != BRCH_TAG);
-
- /* initialize the decoder streams */
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
- wc3->video_stream_index = st->index;
- st->codec.codec_type = CODEC_TYPE_VIDEO;
- st->codec.codec_id = CODEC_ID_XAN_WC3;
- st->codec.codec_tag = 0; /* no fourcc */
- st->codec.width = wc3->width;
- st->codec.height = wc3->height;
-
- /* palette considerations */
- st->codec.extradata_size = sizeof(AVPaletteControl);
- st->codec.extradata = &wc3->palette_control;
-
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
- wc3->audio_stream_index = st->index;
- st->codec.codec_type = CODEC_TYPE_AUDIO;
- st->codec.codec_id = CODEC_ID_PCM_S16LE;
- st->codec.codec_tag = 1;
- st->codec.channels = WC3_AUDIO_CHANNELS;
- st->codec.bits_per_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_sample;
- st->codec.block_align = WC3_AUDIO_BITS * WC3_AUDIO_CHANNELS;
-
- /* set the pts reference (1 pts = 1/90000) */
- s->pts_num = 1;
- s->pts_den = 90000;
-
- return 0;
-}
-
-static int wc3_read_packet(AVFormatContext *s,
- AVPacket *pkt)
-{
- Wc3DemuxContext *wc3 = (Wc3DemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
- unsigned int fourcc_tag;
- unsigned int size;
- int packet_read = 0;
- int ret = 0;
- unsigned char preamble[WC3_PREAMBLE_SIZE];
- unsigned char text[1024];
- unsigned int palette_number;
-
- while (!packet_read) {
-
- /* get the next chunk preamble */
- if ((ret = get_buffer(pb, preamble, WC3_PREAMBLE_SIZE)) !=
- WC3_PREAMBLE_SIZE)
- ret = -EIO;
-
- fourcc_tag = LE_32(&preamble[0]);
- /* chunk sizes are 16-bit aligned */
- size = (BE_32(&preamble[4]) + 1) & (~1);
-
- switch (fourcc_tag) {
-
- case BRCH_TAG:
- /* no-op */
- break;
-
- case SHOT_TAG:
- /* load up new palette */
- if ((ret = get_buffer(pb, preamble, 4)) != 4)
- return -EIO;
- palette_number = LE_32(&preamble[0]);
- if (palette_number >= wc3->palette_count)
- return AVERROR_INVALIDDATA;
- memcpy(wc3->palette_control.palette,
- &wc3->palettes[palette_number * PALETTE_COUNT * 3],
- PALETTE_COUNT * 3);
- wc3->palette_control.palette_changed = 1;
- break;
-
- case VGA__TAG:
- /* send out video chunk */
- if (av_new_packet(pkt, size))
- ret = -EIO;
- pkt->stream_index = wc3->video_stream_index;
- pkt->pts = wc3->pts;
- ret = get_buffer(pb, pkt->data, size);
- if (ret != size)
- ret = -EIO;
- packet_read = 1;
- break;
-
- case TEXT_TAG:
- /* subtitle chunk */
-#if 0
- url_fseek(pb, size, SEEK_CUR);
-#else
- if ((ret = get_buffer(pb, text, size)) != size)
- ret = -EIO;
- else {
- int i = 0;
- printf ("Subtitle time!\n");
- printf (" inglish: %s\n", &text[i + 1]);
- i += text[i] + 1;
- printf (" doytsch: %s\n", &text[i + 1]);
- i += text[i] + 1;
- printf (" fronsay: %s\n", &text[i + 1]);
- }
-#endif
- break;
-
- case AUDI_TAG:
- /* send out audio chunk */
- if (av_new_packet(pkt, size))
- ret = -EIO;
- pkt->stream_index = wc3->audio_stream_index;
- pkt->pts = wc3->pts;
- ret = get_buffer(pb, pkt->data, size);
- if (ret != size)
- ret = -EIO;
-
- /* time to advance pts */
- wc3->pts += WC3_FRAME_PTS_INC;
-
- packet_read = 1;
- break;
-
- default:
- printf (" unrecognized WC3 chunk: %c%c%c%c (0x%02X%02X%02X%02X)\n",
- preamble[0], preamble[1], preamble[2], preamble[3],
- preamble[0], preamble[1], preamble[2], preamble[3]);
- ret = AVERROR_INVALIDDATA;
- packet_read = 1;
- break;
- }
- }
-
- return ret;
-}
-
-static int wc3_read_close(AVFormatContext *s)
-{
- Wc3DemuxContext *wc3 = (Wc3DemuxContext *)s->priv_data;
-
- av_free(wc3->palettes);
-
- return 0;
-}
-
-static AVInputFormat wc3_iformat = {
- "wc3movie",
- "Wing Commander III movie format",
- sizeof(Wc3DemuxContext),
- wc3_probe,
- wc3_read_header,
- wc3_read_packet,
- wc3_read_close,
-};
-
-int wc3_init(void)
-{
- av_register_input_format(&wc3_iformat);
- return 0;
-}
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