* Sega FILM Format (CPK) 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
*/
/**
#include "avformat.h"
-#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 FOURCC_TAG( ch0, ch1, ch2, ch3 ) \
- ( (long)(unsigned char)(ch3) | \
- ( (long)(unsigned char)(ch2) << 8 ) | \
- ( (long)(unsigned char)(ch1) << 16 ) | \
- ( (long)(unsigned char)(ch0) << 24 ) )
-
-#define FILM_TAG FOURCC_TAG('F', 'I', 'L', 'M')
-#define FDSC_TAG FOURCC_TAG('F', 'D', 'S', 'C')
-#define STAB_TAG FOURCC_TAG('S', 'T', 'A', 'B')
-#define CVID_TAG FOURCC_TAG('c', 'v', 'i', 'd')
+#define FILM_TAG MKBETAG('F', 'I', 'L', 'M')
+#define FDSC_TAG MKBETAG('F', 'D', 'S', 'C')
+#define STAB_TAG MKBETAG('S', 'T', 'A', 'B')
+#define CVID_TAG MKBETAG('c', 'v', 'i', 'd')
typedef struct {
int stream;
- off_t sample_offset;
+ offset_t sample_offset;
unsigned int sample_size;
int64_t pts;
int keyframe;
unsigned int base_clock;
unsigned int version;
- int cvid_extra_bytes; /* the number of bytes thrown into the Cinepak
- * chunk header to throw off decoders */
/* buffer used for interleaving stereo PCM data */
unsigned char *stereo_buffer;
if (p->buf_size < 4)
return 0;
- if (BE_32(&p->buf[0]) != FILM_TAG)
+ if (AV_RB32(&p->buf[0]) != FILM_TAG)
return 0;
return AVPROBE_SCORE_MAX;
/* load the main FILM header */
if (get_buffer(pb, scratch, 16) != 16)
- return -EIO;
- data_offset = BE_32(&scratch[4]);
- film->version = BE_32(&scratch[8]);
+ return AVERROR_IO;
+ data_offset = AV_RB32(&scratch[4]);
+ film->version = AV_RB32(&scratch[8]);
/* load the FDSC chunk */
if (film->version == 0) {
/* special case for Lemmings .film files; 20-byte header */
if (get_buffer(pb, scratch, 20) != 20)
- return -EIO;
+ return AVERROR_IO;
/* make some assumptions about the audio parameters */
film->audio_type = CODEC_ID_PCM_S8;
film->audio_samplerate = 22050;
} else {
/* normal Saturn .cpk files; 32-byte header */
if (get_buffer(pb, scratch, 32) != 32)
- return -EIO;
- film->audio_samplerate = BE_16(&scratch[24]);;
+ return AVERROR_IO;
+ film->audio_samplerate = AV_RB16(&scratch[24]);;
film->audio_channels = scratch[21];
film->audio_bits = scratch[22];
if (film->audio_bits == 8)
film->audio_type = 0;
}
- if (BE_32(&scratch[0]) != FDSC_TAG)
+ if (AV_RB32(&scratch[0]) != FDSC_TAG)
return AVERROR_INVALIDDATA;
- film->cvid_extra_bytes = 0;
- if (BE_32(&scratch[8]) == CVID_TAG) {
+ if (AV_RB32(&scratch[8]) == CVID_TAG) {
film->video_type = CODEC_ID_CINEPAK;
- if (film->version)
- film->cvid_extra_bytes = 2;
- else
- film->cvid_extra_bytes = 6; /* Lemmings 3DO case */
} else
film->video_type = 0;
if (!st)
return AVERROR_NOMEM;
film->video_stream_index = st->index;
- st->codec.codec_type = CODEC_TYPE_VIDEO;
- st->codec.codec_id = film->video_type;
- st->codec.codec_tag = 0; /* no fourcc */
- st->codec.width = BE_32(&scratch[16]);
- st->codec.height = BE_32(&scratch[12]);
+ st->codec->codec_type = CODEC_TYPE_VIDEO;
+ st->codec->codec_id = film->video_type;
+ st->codec->codec_tag = 0; /* no fourcc */
+ st->codec->width = AV_RB32(&scratch[16]);
+ st->codec->height = AV_RB32(&scratch[12]);
}
if (film->audio_type) {
if (!st)
return AVERROR_NOMEM;
film->audio_stream_index = st->index;
- st->codec.codec_type = CODEC_TYPE_AUDIO;
- st->codec.codec_id = film->audio_type;
- st->codec.codec_tag = 1;
- st->codec.channels = film->audio_channels;
- st->codec.bits_per_sample = film->audio_bits;
- st->codec.sample_rate = film->audio_samplerate;
- st->codec.bit_rate = st->codec.channels * st->codec.sample_rate *
- st->codec.bits_per_sample;
- st->codec.block_align = st->codec.channels *
- st->codec.bits_per_sample / 8;
+ st->codec->codec_type = CODEC_TYPE_AUDIO;
+ st->codec->codec_id = film->audio_type;
+ st->codec->codec_tag = 1;
+ st->codec->channels = film->audio_channels;
+ st->codec->bits_per_sample = film->audio_bits;
+ st->codec->sample_rate = film->audio_samplerate;
+ st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
+ st->codec->bits_per_sample;
+ st->codec->block_align = st->codec->channels *
+ st->codec->bits_per_sample / 8;
}
/* load the sample table */
if (get_buffer(pb, scratch, 16) != 16)
- return -EIO;
- if (BE_32(&scratch[0]) != STAB_TAG)
+ return AVERROR_IO;
+ if (AV_RB32(&scratch[0]) != STAB_TAG)
return AVERROR_INVALIDDATA;
- film->base_clock = BE_32(&scratch[8]);
- film->sample_count = BE_32(&scratch[12]);
+ film->base_clock = AV_RB32(&scratch[8]);
+ film->sample_count = AV_RB32(&scratch[12]);
+ if(film->sample_count >= UINT_MAX / sizeof(film_sample_t))
+ return -1;
film->sample_table = av_malloc(film->sample_count * sizeof(film_sample_t));
-
+
+ for(i=0; i<s->nb_streams; i++)
+ av_set_pts_info(s->streams[i], 33, 1, film->base_clock);
+
audio_frame_counter = 0;
for (i = 0; i < film->sample_count; i++) {
/* load the next sample record and transfer it to an internal struct */
if (get_buffer(pb, scratch, 16) != 16) {
av_free(film->sample_table);
- return -EIO;
+ return AVERROR_IO;
}
- film->sample_table[i].sample_offset =
- data_offset + BE_32(&scratch[0]);
- film->sample_table[i].sample_size = BE_32(&scratch[4]);
- if (BE_32(&scratch[8]) == 0xFFFFFFFF) {
+ film->sample_table[i].sample_offset =
+ data_offset + AV_RB32(&scratch[0]);
+ film->sample_table[i].sample_size = AV_RB32(&scratch[4]);
+ if (AV_RB32(&scratch[8]) == 0xFFFFFFFF) {
film->sample_table[i].stream = film->audio_stream_index;
film->sample_table[i].pts = audio_frame_counter;
film->sample_table[i].pts *= film->base_clock;
(film->audio_channels * film->audio_bits / 8));
} else {
film->sample_table[i].stream = film->video_stream_index;
- film->sample_table[i].pts = BE_32(&scratch[8]) & 0x7FFFFFFF;
+ film->sample_table[i].pts = AV_RB32(&scratch[8]) & 0x7FFFFFFF;
film->sample_table[i].keyframe = (scratch[8] & 0x80) ? 0 : 1;
}
}
film->current_sample = 0;
- /* set the pts reference to match the tick rate of the file */
- s->pts_num = 1;
- s->pts_den = film->base_clock;
-
return 0;
}
int left, right;
if (film->current_sample >= film->sample_count)
- return -EIO;
+ return AVERROR_IO;
sample = &film->sample_table[film->current_sample];
url_fseek(pb, sample->sample_offset, SEEK_SET);
/* do a special song and dance when loading FILM Cinepak chunks */
- if ((sample->stream == film->video_stream_index) &&
+ if ((sample->stream == film->video_stream_index) &&
(film->video_type == CODEC_ID_CINEPAK)) {
- if (av_new_packet(pkt, sample->sample_size - film->cvid_extra_bytes))
+ pkt->pos= url_ftell(pb);
+ if (av_new_packet(pkt, sample->sample_size))
return AVERROR_NOMEM;
- ret = get_buffer(pb, pkt->data, 10);
- /* skip the non-spec CVID bytes */
- url_fseek(pb, film->cvid_extra_bytes, SEEK_CUR);
- ret += get_buffer(pb, pkt->data + 10,
- sample->sample_size - 10 - film->cvid_extra_bytes);
- if (ret != sample->sample_size - film->cvid_extra_bytes)
- ret = -EIO;
+ get_buffer(pb, pkt->data, sample->sample_size);
} else if ((sample->stream == film->audio_stream_index) &&
(film->audio_channels == 2)) {
/* stereo PCM needs to be interleaved */
film->stereo_buffer = av_malloc(film->stereo_buffer_size);
}
+ pkt->pos= url_ftell(pb);
ret = get_buffer(pb, film->stereo_buffer, sample->sample_size);
if (ret != sample->sample_size)
- ret = -EIO;
+ ret = AVERROR_IO;
left = 0;
right = sample->sample_size / 2;
}
}
} else {
- if (av_new_packet(pkt, sample->sample_size))
- return AVERROR_NOMEM;
- ret = get_buffer(pb, pkt->data, sample->sample_size);
+ ret= av_get_packet(pb, pkt, sample->sample_size);
if (ret != sample->sample_size)
- ret = -EIO;
+ ret = AVERROR_IO;
}
pkt->stream_index = sample->stream;
return 0;
}
-static AVInputFormat film_iformat = {
+AVInputFormat segafilm_demuxer = {
"film_cpk",
"Sega FILM/CPK format",
sizeof(FilmDemuxContext),
film_read_packet,
film_read_close,
};
-
-int film_init(void)
-{
- av_register_input_format(&film_iformat);
- return 0;
-}
projects / ffmpeg / blobdiff