* 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
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];
+ char buffer[513];
int ret = 0;
int current_palette = 0;
int bytes_to_read;
* 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);
+ return AVERROR(EIO);
+ fourcc_tag = AV_RL32(&preamble[0]);
+ size = (AV_RB32(&preamble[4]) + 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]);
+ return AVERROR(EIO);
+ wc3->palette_count = AV_RL32(&preamble[0]);
if((unsigned)wc3->palette_count >= UINT_MAX / PALETTE_SIZE){
wc3->palette_count= 0;
return -1;
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;
+ if ((ret = get_buffer(pb, buffer, bytes_to_read)) != bytes_to_read)
+ return AVERROR(EIO);
+ buffer[bytes_to_read] = 0;
+ av_metadata_set(&s->metadata, "title", buffer);
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]);
+ return AVERROR(EIO);
+ wc3->width = AV_RL32(&preamble[0]);
+ wc3->height = AV_RL32(&preamble[4]);
break;
case PALT_TAG:
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;
if ((ret = get_buffer(pb, preamble, WC3_PREAMBLE_SIZE)) !=
WC3_PREAMBLE_SIZE)
- return AVERROR_IO;
- fourcc_tag = LE_32(&preamble[0]);
+ return AVERROR(EIO);
+ fourcc_tag = AV_RL32(&preamble[0]);
/* chunk sizes are 16-bit aligned */
- size = (BE_32(&preamble[4]) + 1) & (~1);
+ size = (AV_RB32(&preamble[4]) + 1) & (~1);
} 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 = 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->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_sample;
+ 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;
/* get the next chunk preamble */
if ((ret = get_buffer(pb, preamble, WC3_PREAMBLE_SIZE)) !=
WC3_PREAMBLE_SIZE)
- ret = AVERROR_IO;
+ return AVERROR(EIO);
- fourcc_tag = LE_32(&preamble[0]);
+ fourcc_tag = AV_RL32(&preamble[0]);
/* chunk sizes are 16-bit aligned */
- size = (BE_32(&preamble[4]) + 1) & (~1);
+ size = (AV_RB32(&preamble[4]) + 1) & (~1);
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]);
+ return AVERROR(EIO);
+ palette_number = AV_RL32(&preamble[0]);
if (palette_number >= wc3->palette_count)
return AVERROR_INVALIDDATA;
base_palette_index = palette_number * PALETTE_COUNT * 3;
pkt->stream_index = wc3->video_stream_index;
pkt->pts = wc3->pts;
if (ret != size)
- ret = AVERROR_IO;
+ ret = AVERROR(EIO);
packet_read = 1;
break;
url_fseek(pb, size, SEEK_CUR);
#else
if ((unsigned)size > sizeof(text) || (ret = get_buffer(pb, text, size)) != size)
- ret = AVERROR_IO;
+ ret = AVERROR(EIO);
else {
int i = 0;
av_log (s, AV_LOG_DEBUG, "Subtitle time!\n");
pkt->stream_index = wc3->audio_stream_index;
pkt->pts = wc3->pts;
if (ret != size)
- ret = AVERROR_IO;
+ ret = AVERROR(EIO);
/* time to advance pts */
- wc3->pts += WC3_FRAME_PTS_INC;
+ wc3->pts++;
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