* Wing Commander III Movie (.mve) File Demuxer
* Copyright (c) 2003 The ffmpeg Project
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file wc3movie.c
+ * @file libavformat/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 "libavutil/intreadwrite.h"
#include "avformat.h"
-#define WC3_PREAMBLE_SIZE 8
-
#define FORM_TAG MKTAG('F', 'O', 'R', 'M')
#define MOVE_TAG MKTAG('M', 'O', 'V', 'E')
-#define _PC__TAG MKTAG('_', 'P', 'C', '_')
+#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 WC3_AUDIO_BITS 16
/* nice, constant framerate */
-#define WC3_FRAME_PTS_INC (90000 / 15)
+#define WC3_FRAME_FPS 15
#define PALETTE_SIZE (256 * 3)
#define PALETTE_COUNT 256
} Wc3DemuxContext;
-/* bizarre palette lookup table */
+/**
+ * palette lookup table that does gamma correction
+ *
+ * can be calculated by this formula:
+ * for i between 0 and 251 inclusive:
+ * wc3_pal_lookup[i] = round(pow(i / 256.0, 0.8) * 256);
+ * values 252, 253, 254 and 255 are all 0xFD
+ * calculating this at runtime should not cause any
+ * rounding issues, the maximum difference between
+ * the table values and the calculated doubles is
+ * about 0.497527
+ */
static const unsigned char wc3_pal_lookup[] = {
- 0x00, 0x03, 0x05, 0x07, 0x09, 0x0B, 0x0D, 0x0E,
+ 0x00, 0x03, 0x05, 0x07, 0x09, 0x0B, 0x0D, 0x0E,
0x10, 0x12, 0x13, 0x15, 0x16, 0x18, 0x19, 0x1A,
- 0x1C, 0x1D, 0x1F, 0x20, 0x21, 0x23, 0x24, 0x25,
+ 0x1C, 0x1D, 0x1F, 0x20, 0x21, 0x23, 0x24, 0x25,
0x27, 0x28, 0x29, 0x2A, 0x2C, 0x2D, 0x2E, 0x2F,
- 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x38, 0x39,
+ 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x38, 0x39,
0x3A, 0x3B, 0x3C, 0x3D, 0x3F, 0x40, 0x41, 0x42,
- 0x43, 0x44, 0x45, 0x46, 0x48, 0x49, 0x4A, 0x4B,
+ 0x43, 0x44, 0x45, 0x46, 0x48, 0x49, 0x4A, 0x4B,
0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53,
- 0x54, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C,
+ 0x54, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C,
0x5D, 0x5E, 0x5F, 0x60, 0x61, 0x62, 0x63, 0x64,
- 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C,
+ 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C,
0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74,
- 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C,
+ 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C,
0x7D, 0x7D, 0x7E, 0x7F, 0x80, 0x81, 0x82, 0x83,
- 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B,
+ 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B,
0x8C, 0x8D, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92,
- 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x99,
+ 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x99,
0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, 0xA0, 0xA1,
- 0xA2, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
+ 0xA2, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
0xA9, 0xAA, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF,
- 0xB0, 0xB1, 0xB2, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
+ 0xB0, 0xB1, 0xB2, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
0xB7, 0xB8, 0xB9, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD,
- 0xBE, 0xBF, 0xBF, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4,
+ 0xBE, 0xBF, 0xBF, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4,
0xC5, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB,
- 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD0, 0xD1,
+ 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,
+ 0xE6, 0xE7, 0xE8, 0xE9, 0xE9, 0xEA, 0xEB, 0xEC,
0xED, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, 0xF1, 0xF2,
- 0xF3, 0xF4, 0xF5, 0xF6, 0xF6, 0xF7, 0xF8, 0xF9,
+ 0xF3, 0xF4, 0xF5, 0xF6, 0xF6, 0xF7, 0xF8, 0xF9,
0xFA, 0xFA, 0xFB, 0xFC, 0xFD, 0xFD, 0xFD, 0xFD
};
if (p->buf_size < 12)
return 0;
- if ((LE_32(&p->buf[0]) != FORM_TAG) ||
- (LE_32(&p->buf[8]) != MOVE_TAG))
+ 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,
AVFormatParameters *ap)
{
- Wc3DemuxContext *wc3 = (Wc3DemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
+ Wc3DemuxContext *wc3 = 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;
+ char *buffer;
int i;
unsigned char rotate;
/* 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 AVERROR_IO;
- fourcc_tag = LE_32(&preamble[0]);
- size = (BE_32(&preamble[4]) + 1) & (~1);
+ fourcc_tag = get_le32(pb);
+ size = (get_be32(pb) + 1) & (~1);
do {
switch (fourcc_tag) {
url_fseek(pb, size, SEEK_CUR);
break;
- case _PC__TAG:
+ case PC__TAG:
/* need the number of palettes */
url_fseek(pb, 8, SEEK_CUR);
- if ((ret = get_buffer(pb, preamble, 4)) != 4)
- return AVERROR_IO;
- wc3->palette_count = LE_32(&preamble[0]);
+ wc3->palette_count = get_le32(pb);
+ if((unsigned)wc3->palette_count >= UINT_MAX / PALETTE_SIZE){
+ wc3->palette_count= 0;
+ return -1;
+ }
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 AVERROR_IO;
+ buffer = av_malloc(size+1);
+ if (!buffer)
+ return AVERROR_NOMEM;
+ if ((ret = get_buffer(pb, buffer, size)) != size)
+ return AVERROR(EIO);
+ buffer[size] = 0;
+ av_metadata_set2(&s->metadata, "title", buffer,
+ AV_METADATA_DONT_STRDUP_VAL);
break;
case SIZE_TAG:
/* video resolution override */
- if ((ret = get_buffer(pb, preamble, WC3_PREAMBLE_SIZE)) !=
- WC3_PREAMBLE_SIZE)
- return AVERROR_IO;
- wc3->width = LE_32(&preamble[0]);
- wc3->height = LE_32(&preamble[4]);
+ wc3->width = get_le32(pb);
+ wc3->height = get_le32(pb);
break;
case PALT_TAG:
/* one of several palettes */
- if (current_palette >= wc3->palette_count)
+ if ((unsigned)current_palette >= wc3->palette_count)
return AVERROR_INVALIDDATA;
- if ((ret = get_buffer(pb,
- &wc3->palettes[current_palette * PALETTE_SIZE],
+ if ((ret = get_buffer(pb,
+ &wc3->palettes[current_palette * PALETTE_SIZE],
PALETTE_SIZE)) != PALETTE_SIZE)
- return AVERROR_IO;
+ return AVERROR(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) |
+ rotate = ((wc3->palettes[i] << 2) & 0xFF) |
((wc3->palettes[i] >> 6) & 0xFF);
wc3->palettes[i] = wc3_pal_lookup[rotate];
}
default:
av_log(s, AV_LOG_ERROR, " 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]);
+ (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;
break;
}
- if ((ret = get_buffer(pb, preamble, WC3_PREAMBLE_SIZE)) !=
- WC3_PREAMBLE_SIZE)
- return AVERROR_IO;
- fourcc_tag = LE_32(&preamble[0]);
+ fourcc_tag = get_le32(pb);
/* chunk sizes are 16-bit aligned */
- size = (BE_32(&preamble[4]) + 1) & (~1);
+ size = (get_be32(pb) + 1) & (~1);
+ if (url_feof(pb))
+ return AVERROR(EIO);
} while (fourcc_tag != BRCH_TAG);
/* initialize the decoder streams */
st = av_new_stream(s, 0);
if (!st)
- return AVERROR_NOMEM;
- av_set_pts_info(st, 33, 1, 90000);
+ return AVERROR(ENOMEM);
+ av_set_pts_info(st, 33, 1, WC3_FRAME_FPS);
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;
+ 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.palctrl = &wc3->palette_control;
+ st->codec->palctrl = &wc3->palette_control;
st = av_new_stream(s, 0);
if (!st)
- return AVERROR_NOMEM;
- av_set_pts_info(st, 33, 1, 90000);
+ return AVERROR(ENOMEM);
+ av_set_pts_info(st, 33, 1, WC3_FRAME_FPS);
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;
+ 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_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 = (Wc3DemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
+ Wc3DemuxContext *wc3 = 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;
int i;
while (!packet_read) {
- /* get the next chunk preamble */
- if ((ret = get_buffer(pb, preamble, WC3_PREAMBLE_SIZE)) !=
- WC3_PREAMBLE_SIZE)
- ret = AVERROR_IO;
-
- fourcc_tag = LE_32(&preamble[0]);
+ fourcc_tag = get_le32(pb);
/* chunk sizes are 16-bit aligned */
- size = (BE_32(&preamble[4]) + 1) & (~1);
+ size = (get_be32(pb) + 1) & (~1);
+ if (url_feof(pb))
+ return AVERROR(EIO);
switch (fourcc_tag) {
case SHOT_TAG:
/* load up new palette */
- if ((ret = get_buffer(pb, preamble, 4)) != 4)
- return AVERROR_IO;
- palette_number = LE_32(&preamble[0]);
+ palette_number = get_le32(pb);
if (palette_number >= wc3->palette_count)
return AVERROR_INVALIDDATA;
base_palette_index = palette_number * PALETTE_COUNT * 3;
case VGA__TAG:
/* send out video chunk */
- if (av_new_packet(pkt, size))
- ret = AVERROR_IO;
+ ret= av_get_packet(pb, pkt, size);
pkt->stream_index = wc3->video_stream_index;
pkt->pts = wc3->pts;
- ret = get_buffer(pb, pkt->data, size);
- if (ret != size)
- ret = AVERROR_IO;
packet_read = 1;
break;
#if 0
url_fseek(pb, size, SEEK_CUR);
#else
- if ((ret = get_buffer(pb, text, size)) != size)
- ret = AVERROR_IO;
+ if ((unsigned)size > sizeof(text) || (ret = get_buffer(pb, text, size)) != size)
+ ret = AVERROR(EIO);
else {
int i = 0;
av_log (s, AV_LOG_DEBUG, "Subtitle time!\n");
case AUDI_TAG:
/* send out audio chunk */
- if (av_new_packet(pkt, size))
- ret = AVERROR_IO;
+ ret= av_get_packet(pb, pkt, size);
pkt->stream_index = wc3->audio_stream_index;
pkt->pts = wc3->pts;
- ret = get_buffer(pb, pkt->data, size);
- if (ret != size)
- ret = AVERROR_IO;
/* time to advance pts */
- wc3->pts += WC3_FRAME_PTS_INC;
+ 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",
- preamble[0], preamble[1], preamble[2], preamble[3],
- preamble[0], preamble[1], preamble[2], preamble[3]);
+ 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;
static int wc3_read_close(AVFormatContext *s)
{
- Wc3DemuxContext *wc3 = (Wc3DemuxContext *)s->priv_data;
+ Wc3DemuxContext *wc3 = s->priv_data;
av_free(wc3->palettes);
return 0;
}
-static AVInputFormat wc3_iformat = {
+AVInputFormat wc3_demuxer = {
"wc3movie",
- "Wing Commander III movie format",
+ NULL_IF_CONFIG_SMALL("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;
-}
projects / ffmpeg / blobdiff