* 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 Libav.
+ *
+ * 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 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,
+ * 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * 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"
+#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 {
+typedef struct film_sample {
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;
int audio_stream_index;
- unsigned int audio_type;
+ enum AVCodecID audio_type;
unsigned int audio_samplerate;
unsigned int audio_bits;
unsigned int audio_channels;
- unsigned int video_type;
+ enum AVCodecID video_type;
unsigned int sample_count;
- film_sample_t *sample_table;
+ film_sample *sample_table;
unsigned int current_sample;
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;
- int stereo_buffer_size;
} FilmDemuxContext;
static int film_probe(AVProbeData *p)
{
- 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;
}
-static int film_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
+static int film_read_close(AVFormatContext *s)
+{
+ FilmDemuxContext *film = s->priv_data;
+
+ av_freep(&film->sample_table);
+
+ return 0;
+}
+
+static int film_read_header(AVFormatContext *s)
{
- FilmDemuxContext *film = (FilmDemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
+ FilmDemuxContext *film = s->priv_data;
+ AVIOContext *pb = s->pb;
AVStream *st;
unsigned char scratch[256];
- int i;
+ int i, ret;
unsigned int data_offset;
unsigned int audio_frame_counter;
+ unsigned int video_frame_counter;
film->sample_table = NULL;
- film->stereo_buffer = NULL;
- film->stereo_buffer_size = 0;
/* load the main FILM header */
- if (get_buffer(pb, scratch, 16) != 16)
- return AVERROR_IO;
- data_offset = BE_32(&scratch[4]);
- film->version = BE_32(&scratch[8]);
+ 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)
- return AVERROR_IO;
+ 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)
- return AVERROR_IO;
- film->audio_samplerate = BE_16(&scratch[24]);;
+ if (avio_read(pb, scratch, 32) != 32)
+ return AVERROR(EIO);
+ film->audio_samplerate = AV_RB16(&scratch[24]);
film->audio_channels = scratch[21];
+ if (!film->audio_channels || film->audio_channels > 2) {
+ av_log(s, AV_LOG_ERROR,
+ "Invalid number of channels: %d\n", film->audio_channels);
+ return AVERROR_INVALIDDATA;
+ }
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 = 0;
+ 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_PLANAR;
+ else if (film->audio_bits == 16)
+ film->audio_type = AV_CODEC_ID_PCM_S16BE_PLANAR;
+ else
+ film->audio_type = AV_CODEC_ID_NONE;
+ } else
+ film->audio_type = AV_CODEC_ID_NONE;
}
- 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) {
- 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 (AV_RB32(&scratch[8]) == CVID_TAG) {
+ 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_NOMEM;
+ return AVERROR(ENOMEM);
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->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codecpar->codec_id = film->video_type;
+ st->codecpar->codec_tag = 0; /* no fourcc */
+ st->codecpar->width = AV_RB32(&scratch[16]);
+ st->codecpar->height = AV_RB32(&scratch[12]);
+
+ if (film->video_type == AV_CODEC_ID_RAWVIDEO) {
+ if (scratch[20] == 24) {
+ st->codecpar->format = 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_NOMEM;
+ return AVERROR(ENOMEM);
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->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codecpar->codec_id = film->audio_type;
+ st->codecpar->codec_tag = 1;
+ st->codecpar->channels = film->audio_channels;
+ st->codecpar->sample_rate = film->audio_samplerate;
+
+ if (film->audio_type == AV_CODEC_ID_ADPCM_ADX) {
+ st->codecpar->bits_per_coded_sample = 18 * 8 / 32;
+ st->codecpar->block_align = st->codecpar->channels * 18;
+ st->need_parsing = AVSTREAM_PARSE_FULL;
+ } else {
+ st->codecpar->bits_per_coded_sample = film->audio_bits;
+ st->codecpar->block_align = st->codecpar->channels *
+ st->codecpar->bits_per_coded_sample / 8;
+ }
+
+ st->codecpar->bit_rate = st->codecpar->channels * st->codecpar->sample_rate *
+ st->codecpar->bits_per_coded_sample;
}
/* load the sample table */
- if (get_buffer(pb, scratch, 16) != 16)
- return AVERROR_IO;
- if (BE_32(&scratch[0]) != STAB_TAG)
+ if (avio_read(pb, scratch, 16) != 16)
+ return AVERROR(EIO);
+ if (AV_RB32(&scratch[0]) != STAB_TAG)
return AVERROR_INVALIDDATA;
- film->base_clock = BE_32(&scratch[8]);
- film->sample_count = BE_32(&scratch[12]);
- if(film->sample_count >= UINT_MAX / sizeof(film_sample_t))
+ film->base_clock = AV_RB32(&scratch[8]);
+ film->sample_count = AV_RB32(&scratch[12]);
+ if(film->sample_count >= UINT_MAX / sizeof(film_sample))
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;
+ 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++) {
+ st = s->streams[i];
+ if (st->codecpar->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 = video_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 AVERROR_IO;
+ if (avio_read(pb, scratch, 16) != 16) {
+ ret = AVERROR(EIO);
+ goto fail;
+ }
+ film->sample_table[i].sample_offset =
+ data_offset + AV_RB32(&scratch[0]);
+ film->sample_table[i].sample_size = AV_RB32(&scratch[4]);
+ if (film->sample_table[i].sample_size > INT_MAX / 4) {
+ ret = AVERROR_INVALIDDATA;
+ goto fail;
}
- 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) {
+ 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 = 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;
+ video_frame_counter++;
+ av_add_index_entry(s->streams[film->video_stream_index],
+ film->sample_table[i].sample_offset,
+ film->sample_table[i].pts,
+ film->sample_table[i].sample_size, 0,
+ film->sample_table[i].keyframe);
}
}
+ if (film->audio_type)
+ s->streams[film->audio_stream_index]->duration = audio_frame_counter;
+
+ if (film->video_type)
+ s->streams[film->video_stream_index]->duration = video_frame_counter;
+
film->current_sample = 0;
return 0;
+fail:
+ film_read_close(s);
+ return ret;
}
static int film_read_packet(AVFormatContext *s,
AVPacket *pkt)
{
- FilmDemuxContext *film = (FilmDemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
- film_sample_t *sample;
+ FilmDemuxContext *film = s->priv_data;
+ AVIOContext *pb = s->pb;
+ film_sample *sample;
int ret = 0;
- int i;
- int left, right;
if (film->current_sample >= film->sample_count)
- return AVERROR_IO;
+ return AVERROR(EIO);
sample = &film->sample_table[film->current_sample];
/* position the stream (will probably be there anyway) */
- 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) &&
- (film->video_type == CODEC_ID_CINEPAK)) {
- if (av_new_packet(pkt, sample->sample_size - film->cvid_extra_bytes))
- return AVERROR_NOMEM;
- if(pkt->size < 10)
- return -1;
- pkt->pos= url_ftell(pb);
- 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 = AVERROR_IO;
- } else if ((sample->stream == film->audio_stream_index) &&
- (film->audio_channels == 2)) {
- /* stereo PCM needs to be interleaved */
-
- if (av_new_packet(pkt, sample->sample_size))
- return AVERROR_NOMEM;
-
- /* make sure the interleave buffer is large enough */
- if (sample->sample_size > film->stereo_buffer_size) {
- av_free(film->stereo_buffer);
- film->stereo_buffer_size = sample->sample_size;
- film->stereo_buffer = av_malloc(film->stereo_buffer_size);
- }
+ avio_seek(pb, sample->sample_offset, SEEK_SET);
- pkt->pos= url_ftell(pb);
- ret = get_buffer(pb, film->stereo_buffer, sample->sample_size);
- if (ret != sample->sample_size)
- ret = AVERROR_IO;
-
- left = 0;
- right = sample->sample_size / 2;
- for (i = 0; i < sample->sample_size; ) {
- if (film->audio_bits == 8) {
- pkt->data[i++] = film->stereo_buffer[left++];
- pkt->data[i++] = film->stereo_buffer[right++];
- } else {
- pkt->data[i++] = film->stereo_buffer[left++];
- pkt->data[i++] = film->stereo_buffer[left++];
- pkt->data[i++] = film->stereo_buffer[right++];
- pkt->data[i++] = film->stereo_buffer[right++];
- }
- }
- } else {
- ret= av_get_packet(pb, pkt, sample->sample_size);
- if (ret != sample->sample_size)
- ret = AVERROR_IO;
- }
+ ret = av_get_packet(pb, pkt, sample->sample_size);
+ if (ret < 0)
+ return ret;
pkt->stream_index = sample->stream;
pkt->pts = sample->pts;
return ret;
}
-static int film_read_close(AVFormatContext *s)
+static int film_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
{
- FilmDemuxContext *film = (FilmDemuxContext *)s->priv_data;
+ FilmDemuxContext *film = s->priv_data;
+ AVStream *st = s->streams[stream_index];
+ int64_t pos;
+ int ret = av_index_search_timestamp(st, timestamp, flags);
+ if (ret < 0)
+ return ret;
- av_free(film->sample_table);
- av_free(film->stereo_buffer);
+ pos = avio_seek(s->pb, st->index_entries[ret].pos, SEEK_SET);
+ if (pos < 0)
+ return pos;
+
+ film->current_sample = ret;
return 0;
}
-static AVInputFormat film_iformat = {
- "film_cpk",
- "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,
+ .read_seek = film_read_seek,
};
-
-int film_init(void)
-{
- av_register_input_format(&film_iformat);
- return 0;
-}
projects / ffmpeg / blobdiff