* 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:
#include "libavutil/intreadwrite.h"
#include "avformat.h"
+#include "internal.h"
#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')
+#define RAW_TAG MKBETAG('r', 'a', 'w', ' ')
typedef struct {
int stream;
int video_stream_index;
int audio_stream_index;
- enum CodecID audio_type;
+ enum AVCodecID audio_type;
unsigned int audio_samplerate;
unsigned int audio_bits;
unsigned int audio_channels;
- enum CodecID video_type;
+ enum AVCodecID video_type;
unsigned int sample_count;
film_sample *sample_table;
unsigned int current_sample;
return AVPROBE_SCORE_MAX;
}
-static int film_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
+static int film_read_header(AVFormatContext *s)
{
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_type = AV_CODEC_ID_PCM_S8;
film->audio_samplerate = 22050;
film->audio_channels = 1;
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];
film->audio_bits = scratch[22];
- if (film->audio_bits == 8)
- film->audio_type = CODEC_ID_PCM_S8;
- else if (film->audio_bits == 16)
- film->audio_type = CODEC_ID_PCM_S16BE;
- else
- film->audio_type = CODEC_ID_NONE;
+ if (scratch[23] == 2)
+ film->audio_type = AV_CODEC_ID_ADPCM_ADX;
+ else if (film->audio_channels > 0) {
+ if (film->audio_bits == 8)
+ film->audio_type = AV_CODEC_ID_PCM_S8;
+ else if (film->audio_bits == 16)
+ film->audio_type = AV_CODEC_ID_PCM_S16BE;
+ else
+ film->audio_type = AV_CODEC_ID_NONE;
+ } else
+ film->audio_type = AV_CODEC_ID_NONE;
}
if (AV_RB32(&scratch[0]) != FDSC_TAG)
return AVERROR_INVALIDDATA;
if (AV_RB32(&scratch[8]) == CVID_TAG) {
- film->video_type = CODEC_ID_CINEPAK;
- } else
- film->video_type = CODEC_ID_NONE;
+ film->video_type = AV_CODEC_ID_CINEPAK;
+ } else if (AV_RB32(&scratch[8]) == RAW_TAG) {
+ film->video_type = AV_CODEC_ID_RAWVIDEO;
+ } else {
+ film->video_type = AV_CODEC_ID_NONE;
+ }
/* initialize the decoder streams */
if (film->video_type) {
- st = av_new_stream(s, 0);
+ st = avformat_new_stream(s, NULL);
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]);
st->codec->height = AV_RB32(&scratch[12]);
+
+ if (film->video_type == AV_CODEC_ID_RAWVIDEO) {
+ if (scratch[20] == 24) {
+ st->codec->pix_fmt = AV_PIX_FMT_RGB24;
+ } else {
+ av_log(s, AV_LOG_ERROR, "raw video is using unhandled %dbpp\n", scratch[20]);
+ return -1;
+ }
+ }
}
if (film->audio_type) {
- st = av_new_stream(s, 0);
+ st = avformat_new_stream(s, NULL);
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;
- st->codec->bits_per_coded_sample = film->audio_bits;
st->codec->sample_rate = film->audio_samplerate;
+
+ if (film->audio_type == AV_CODEC_ID_ADPCM_ADX) {
+ st->codec->bits_per_coded_sample = 18 * 8 / 32;
+ st->codec->block_align = st->codec->channels * 18;
+ st->need_parsing = AVSTREAM_PARSE_FULL;
+ } else {
+ st->codec->bits_per_coded_sample = film->audio_bits;
+ st->codec->block_align = st->codec->channels *
+ st->codec->bits_per_coded_sample / 8;
+ }
+
st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
st->codec->bits_per_coded_sample;
- st->codec->block_align = st->codec->channels *
- st->codec->bits_per_coded_sample / 8;
}
/* 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;
if(film->sample_count >= UINT_MAX / sizeof(film_sample))
return -1;
film->sample_table = av_malloc(film->sample_count * sizeof(film_sample));
+ if (!film->sample_table)
+ return AVERROR(ENOMEM);
- for(i=0; i<s->nb_streams; i++)
- av_set_pts_info(s->streams[i], 33, 1, film->base_clock);
+ for (i = 0; i < s->nb_streams; i++) {
+ st = s->streams[i];
+ if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
+ avpriv_set_pts_info(st, 33, 1, film->base_clock);
+ else
+ avpriv_set_pts_info(st, 64, 1, film->audio_samplerate);
+ }
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);
}
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->sample_table[i].pts /= film->audio_samplerate;
- audio_frame_counter += (film->sample_table[i].sample_size /
- (film->audio_channels * film->audio_bits / 8));
+ if (film->audio_type == AV_CODEC_ID_ADPCM_ADX)
+ audio_frame_counter += (film->sample_table[i].sample_size * 32 /
+ (18 * film->audio_channels));
+ else if (film->audio_type != AV_CODEC_ID_NONE)
+ audio_frame_counter += (film->sample_table[i].sample_size /
+ (film->audio_channels * film->audio_bits / 8));
} else {
film->sample_table[i].stream = film->video_stream_index;
film->sample_table[i].pts = AV_RB32(&scratch[8]) & 0x7FFFFFFF;
AVPacket *pkt)
{
FilmDemuxContext *film = s->priv_data;
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
film_sample *sample;
int ret = 0;
int i;
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);
+ (film->video_type == AV_CODEC_ID_CINEPAK)) {
+ 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)) {
+ (film->audio_channels == 2) &&
+ (film->audio_type != AV_CODEC_ID_ADPCM_ADX)) {
/* stereo PCM needs to be interleaved */
if (av_new_packet(pkt, sample->sample_size))
av_free(film->stereo_buffer);
film->stereo_buffer_size = sample->sample_size;
film->stereo_buffer = av_malloc(film->stereo_buffer_size);
+ if (!film->stereo_buffer) {
+ film->stereo_buffer_size = 0;
+ return AVERROR(ENOMEM);
+ }
}
- 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 = {
- "film_cpk",
- NULL_IF_CONFIG_SMALL("Sega FILM/CPK format"),
- sizeof(FilmDemuxContext),
- film_probe,
- film_read_header,
- film_read_packet,
- film_read_close,
+AVInputFormat ff_segafilm_demuxer = {
+ .name = "film_cpk",
+ .long_name = NULL_IF_CONFIG_SMALL("Sega FILM / CPK"),
+ .priv_data_size = sizeof(FilmDemuxContext),
+ .read_probe = film_probe,
+ .read_header = film_read_header,
+ .read_packet = film_read_packet,
+ .read_close = film_read_close,
};
projects / ffmpeg / blobdiff