* Sega FILM Format (CPK) Demuxer
* Copyright (c) 2003 The ffmpeg Project
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file segafilm.c
+ * @file
* Sega FILM (.cpk) file demuxer
* by Mike Melanson (melanson@pcisys.net)
* For more information regarding the Sega FILM file format, visit:
* http://www.pcisys.net/~melanson/codecs/
*/
+#include "libavutil/intreadwrite.h"
#include "avformat.h"
#define FILM_TAG MKBETAG('F', 'I', 'L', 'M')
typedef struct {
int stream;
- offset_t sample_offset;
+ int64_t sample_offset;
unsigned int sample_size;
int64_t pts;
int keyframe;
-} film_sample_t;
+} film_sample;
typedef struct FilmDemuxContext {
int video_stream_index;
enum CodecID video_type;
unsigned int sample_count;
- film_sample_t *sample_table;
+ film_sample *sample_table;
unsigned int current_sample;
unsigned int base_clock;
AVFormatParameters *ap)
{
FilmDemuxContext *film = s->priv_data;
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
AVStream *st;
unsigned char scratch[256];
int i;
film->stereo_buffer_size = 0;
/* load the main FILM header */
- if (get_buffer(pb, scratch, 16) != 16)
+ if (avio_read(pb, scratch, 16) != 16)
return AVERROR(EIO);
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)
+ if (avio_read(pb, scratch, 20) != 20)
return AVERROR(EIO);
/* make some assumptions about the audio parameters */
film->audio_type = CODEC_ID_PCM_S8;
film->audio_bits = 8;
} else {
/* normal Saturn .cpk files; 32-byte header */
- if (get_buffer(pb, scratch, 32) != 32)
+ if (avio_read(pb, scratch, 32) != 32)
return AVERROR(EIO);
film->audio_samplerate = AV_RB16(&scratch[24]);
film->audio_channels = scratch[21];
if (!st)
return AVERROR(ENOMEM);
film->video_stream_index = st->index;
- st->codec->codec_type = CODEC_TYPE_VIDEO;
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = film->video_type;
st->codec->codec_tag = 0; /* no fourcc */
st->codec->width = AV_RB32(&scratch[16]);
if (!st)
return AVERROR(ENOMEM);
film->audio_stream_index = st->index;
- st->codec->codec_type = CODEC_TYPE_AUDIO;
+ st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = film->audio_type;
st->codec->codec_tag = 1;
st->codec->channels = film->audio_channels;
}
/* load the sample table */
- if (get_buffer(pb, scratch, 16) != 16)
+ if (avio_read(pb, scratch, 16) != 16)
return AVERROR(EIO);
if (AV_RB32(&scratch[0]) != STAB_TAG)
return AVERROR_INVALIDDATA;
film->base_clock = AV_RB32(&scratch[8]);
film->sample_count = AV_RB32(&scratch[12]);
- if(film->sample_count >= UINT_MAX / sizeof(film_sample_t))
+ if(film->sample_count >= UINT_MAX / sizeof(film_sample))
return -1;
- film->sample_table = av_malloc(film->sample_count * sizeof(film_sample_t));
+ film->sample_table = av_malloc(film->sample_count * sizeof(film_sample));
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) {
+ if (avio_read(pb, scratch, 16) != 16) {
av_free(film->sample_table);
return AVERROR(EIO);
}
AVPacket *pkt)
{
FilmDemuxContext *film = s->priv_data;
- ByteIOContext *pb = s->pb;
- film_sample_t *sample;
+ AVIOContext *pb = s->pb;
+ film_sample *sample;
int ret = 0;
int i;
int left, right;
sample = &film->sample_table[film->current_sample];
/* position the stream (will probably be there anyway) */
- url_fseek(pb, sample->sample_offset, SEEK_SET);
+ avio_seek(pb, sample->sample_offset, SEEK_SET);
/* do a special song and dance when loading FILM Cinepak chunks */
if ((sample->stream == film->video_stream_index) &&
(film->video_type == CODEC_ID_CINEPAK)) {
- pkt->pos= url_ftell(pb);
+ pkt->pos= avio_tell(pb);
if (av_new_packet(pkt, sample->sample_size))
return AVERROR(ENOMEM);
- get_buffer(pb, pkt->data, sample->sample_size);
+ avio_read(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);
+ pkt->pos= avio_tell(pb);
+ ret = avio_read(pb, film->stereo_buffer, sample->sample_size);
if (ret != sample->sample_size)
ret = AVERROR(EIO);
return 0;
}
-AVInputFormat segafilm_demuxer = {
+AVInputFormat ff_segafilm_demuxer = {
"film_cpk",
NULL_IF_CONFIG_SMALL("Sega FILM/CPK format"),
sizeof(FilmDemuxContext),
projects / ffmpeg / blobdiff