X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Fwc3movie.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Fwc3movie.c;h=16e4412681dc1db577037086b8dd2a94d2f111ca;hb=299aecad571ca490ce017004a0d7e555d6df0520;hp=0000000000000000000000000000000000000000;hpb=42861dc634bef4059ca95e5292033315a0b9ce30;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/wc3movie.c b/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/wc3movie.c new file mode 100644 index 0000000..16e4412 --- /dev/null +++ b/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/wc3movie.c @@ -0,0 +1,411 @@ +/* + * 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; +}