/*
* FLI/FLC Animation File Demuxer
- * Copyright (c) 2003 The ffmpeg Project
+ * 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 flic.c
+ * @file
* FLI/FLC file demuxer
* by Mike Melanson (melanson@pcisys.net)
* for more information on the .fli/.flc file format and all of its many
* variations, visit:
* http://www.compuphase.com/flic.htm
*
- * This demuxer handles standard 0xAF11- and 0xAF12-type FLIs. It also
- * handles special FLIs from the PC game "Magic Carpet".
+ * This demuxer handles standard 0xAF11- and 0xAF12-type FLIs. It also handles
+ * special FLIs from the PC games "Magic Carpet" and "X-COM: Terror from the Deep".
*/
+#include "libavutil/channel_layout.h"
+#include "libavutil/intreadwrite.h"
#include "avformat.h"
+#include "internal.h"
#define FLIC_FILE_MAGIC_1 0xAF11
#define FLIC_FILE_MAGIC_2 0xAF12
+#define FLIC_FILE_MAGIC_3 0xAF44 /* Flic Type for Extended FLX Format which
+ originated in Dave's Targa Animator (DTA) */
#define FLIC_CHUNK_MAGIC_1 0xF1FA
#define FLIC_CHUNK_MAGIC_2 0xF5FA
-#define FLIC_MC_PTS_INC 6000 /* pts increment for Magic Carpet game FLIs */
-#define FLIC_DEFAULT_PTS_INC 6000 /* for FLIs that have 0 speed */
+#define FLIC_MC_SPEED 5 /* speed for Magic Carpet game FLIs */
+#define FLIC_DEFAULT_SPEED 5 /* for FLIs that have 0 speed */
+#define FLIC_TFTD_CHUNK_AUDIO 0xAAAA /* Audio chunk. Used in Terror from the Deep.
+ Has 10 B extra header not accounted for in the chunk header */
+#define FLIC_TFTD_SAMPLE_RATE 22050
#define FLIC_HEADER_SIZE 128
#define FLIC_PREAMBLE_SIZE 6
typedef struct FlicDemuxContext {
- int frame_pts_inc;
- int64_t pts;
int video_stream_index;
+ int audio_stream_index;
+ int frame_number;
} FlicDemuxContext;
static int flic_probe(AVProbeData *p)
{
int magic_number;
- if (p->buf_size < 6)
+ if(p->buf_size < FLIC_HEADER_SIZE)
return 0;
- magic_number = LE_16(&p->buf[4]);
+ magic_number = AV_RL16(&p->buf[4]);
if ((magic_number != FLIC_FILE_MAGIC_1) &&
- (magic_number != FLIC_FILE_MAGIC_2))
+ (magic_number != FLIC_FILE_MAGIC_2) &&
+ (magic_number != FLIC_FILE_MAGIC_3))
+ return 0;
+
+ if(AV_RL16(&p->buf[0x10]) != FLIC_CHUNK_MAGIC_1){
+ if(AV_RL32(&p->buf[0x10]) > 2000)
+ return 0;
+ }
+
+ if( AV_RL16(&p->buf[0x08]) > 4096
+ || AV_RL16(&p->buf[0x0A]) > 4096)
return 0;
+
return AVPROBE_SCORE_MAX;
}
-static int flic_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
+static int flic_read_header(AVFormatContext *s)
{
- FlicDemuxContext *flic = (FlicDemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
+ FlicDemuxContext *flic = s->priv_data;
+ AVIOContext *pb = s->pb;
unsigned char header[FLIC_HEADER_SIZE];
- AVStream *st;
+ AVStream *st, *ast;
int speed;
int magic_number;
+ unsigned char preamble[FLIC_PREAMBLE_SIZE];
- flic->pts = 0;
+ flic->frame_number = 0;
/* load the whole header and pull out the width and height */
- if (get_buffer(pb, header, FLIC_HEADER_SIZE) != FLIC_HEADER_SIZE)
- return -EIO;
+ if (avio_read(pb, header, FLIC_HEADER_SIZE) != FLIC_HEADER_SIZE)
+ return AVERROR(EIO);
- magic_number = LE_16(&header[4]);
- speed = LE_32(&header[0x10]);
+ magic_number = AV_RL16(&header[4]);
+ speed = AV_RL32(&header[0x10]);
+ if (speed == 0)
+ speed = FLIC_DEFAULT_SPEED;
/* initialize the decoder streams */
- st = av_new_stream(s, 0);
+ st = avformat_new_stream(s, NULL);
if (!st)
- return AVERROR_NOMEM;
+ return AVERROR(ENOMEM);
flic->video_stream_index = st->index;
- st->codec.codec_type = CODEC_TYPE_VIDEO;
- st->codec.codec_id = CODEC_ID_FLIC;
- st->codec.codec_tag = 0; /* no fourcc */
- st->codec.width = LE_16(&header[0x08]);
- st->codec.height = LE_16(&header[0x0A]);
-
- if (!st->codec.width || !st->codec.height)
- return AVERROR_INVALIDDATA;
+ st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codecpar->codec_id = AV_CODEC_ID_FLIC;
+ st->codecpar->codec_tag = 0; /* no fourcc */
+ st->codecpar->width = AV_RL16(&header[0x08]);
+ st->codecpar->height = AV_RL16(&header[0x0A]);
+
+ if (!st->codecpar->width || !st->codecpar->height) {
+ /* Ugly hack needed for the following sample: */
+ /* http://samples.libav.org/fli-flc/fli-bugs/specular.flc */
+ av_log(s, AV_LOG_WARNING,
+ "File with no specified width/height. Trying 640x480.\n");
+ st->codecpar->width = 640;
+ st->codecpar->height = 480;
+ }
/* send over the whole 128-byte FLIC header */
- st->codec.extradata_size = FLIC_HEADER_SIZE;
- st->codec.extradata = av_malloc(FLIC_HEADER_SIZE);
- memcpy(st->codec.extradata, header, FLIC_HEADER_SIZE);
-
- av_set_pts_info(st, 33, 1, 90000);
-
- /* Time to figure out the framerate: If there is a FLIC chunk magic
- * number at offset 0x10, assume this is from the Bullfrog game,
- * Magic Carpet. */
- if (LE_16(&header[0x10]) == FLIC_CHUNK_MAGIC_1) {
+ st->codecpar->extradata_size = FLIC_HEADER_SIZE;
+ st->codecpar->extradata = av_malloc(FLIC_HEADER_SIZE);
+ memcpy(st->codecpar->extradata, header, FLIC_HEADER_SIZE);
+
+ /* peek at the preamble to detect TFTD videos - they seem to always start with an audio chunk */
+ if (avio_read(pb, preamble, FLIC_PREAMBLE_SIZE) != FLIC_PREAMBLE_SIZE) {
+ av_log(s, AV_LOG_ERROR, "Failed to peek at preamble\n");
+ return AVERROR(EIO);
+ }
- flic->frame_pts_inc = FLIC_MC_PTS_INC;
+ avio_seek(pb, -FLIC_PREAMBLE_SIZE, SEEK_CUR);
+
+ /* Time to figure out the framerate:
+ * If the first preamble's magic number is 0xAAAA then this file is from
+ * X-COM: Terror from the Deep. If on the other hand there is a FLIC chunk
+ * magic number at offset 0x10 assume this file is from Magic Carpet instead.
+ * If neither of the above is true then this is a normal FLIC file.
+ */
+ if (AV_RL16(&preamble[4]) == FLIC_TFTD_CHUNK_AUDIO) {
+ /* TFTD videos have an extra 22050 Hz 8-bit mono audio stream */
+ ast = avformat_new_stream(s, NULL);
+ if (!ast)
+ return AVERROR(ENOMEM);
+
+ flic->audio_stream_index = ast->index;
+
+ /* all audio frames are the same size, so use the size of the first chunk for block_align */
+ ast->codecpar->block_align = AV_RL32(&preamble[0]);
+ ast->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ ast->codecpar->codec_id = AV_CODEC_ID_PCM_U8;
+ ast->codecpar->codec_tag = 0;
+ ast->codecpar->sample_rate = FLIC_TFTD_SAMPLE_RATE;
+ ast->codecpar->channels = 1;
+ ast->codecpar->format = AV_SAMPLE_FMT_U8;
+ ast->codecpar->bit_rate = st->codecpar->sample_rate * 8;
+ ast->codecpar->bits_per_coded_sample = 8;
+ ast->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
+ ast->codecpar->extradata_size = 0;
+
+ /* Since the header information is incorrect we have to figure out the
+ * framerate using block_align and the fact that the audio is 22050 Hz.
+ * We usually have two cases: 2205 -> 10 fps and 1470 -> 15 fps */
+ avpriv_set_pts_info(st, 64, ast->codecpar->block_align, FLIC_TFTD_SAMPLE_RATE);
+ avpriv_set_pts_info(ast, 64, 1, FLIC_TFTD_SAMPLE_RATE);
+ } else if (AV_RL16(&header[0x10]) == FLIC_CHUNK_MAGIC_1) {
+ avpriv_set_pts_info(st, 64, FLIC_MC_SPEED, 70);
/* rewind the stream since the first chunk is at offset 12 */
- url_fseek(pb, 12, SEEK_SET);
+ avio_seek(pb, 12, SEEK_SET);
/* send over abbreviated FLIC header chunk */
- av_free(st->codec.extradata);
- st->codec.extradata_size = 12;
- st->codec.extradata = av_malloc(12);
- memcpy(st->codec.extradata, header, 12);
+ av_free(st->codecpar->extradata);
+ st->codecpar->extradata_size = 12;
+ st->codecpar->extradata = av_malloc(12);
+ memcpy(st->codecpar->extradata, header, 12);
} else if (magic_number == FLIC_FILE_MAGIC_1) {
- /*
- * in this case, the speed (n) is number of 1/70s ticks between frames:
- *
- * pts n * frame #
- * -------- = ----------- => pts = n * (90000/70) * frame #
- * 90000 70
- *
- * therefore, the frame pts increment = n * 1285.7
- */
- flic->frame_pts_inc = speed * 1285.7;
- } else if (magic_number == FLIC_FILE_MAGIC_2) {
- /*
- * in this case, the speed (n) is number of milliseconds between frames:
- *
- * pts n * frame #
- * -------- = ----------- => pts = n * 90 * frame #
- * 90000 1000
- *
- * therefore, the frame pts increment = n * 90
- */
- flic->frame_pts_inc = speed * 90;
- } else
+ avpriv_set_pts_info(st, 64, speed, 70);
+ } else if ((magic_number == FLIC_FILE_MAGIC_2) ||
+ (magic_number == FLIC_FILE_MAGIC_3)) {
+ avpriv_set_pts_info(st, 64, speed, 1000);
+ } else {
+ av_log(s, AV_LOG_INFO, "Invalid or unsupported magic chunk in file\n");
return AVERROR_INVALIDDATA;
-
- if (flic->frame_pts_inc == 0)
- flic->frame_pts_inc = FLIC_DEFAULT_PTS_INC;
+ }
return 0;
}
static int flic_read_packet(AVFormatContext *s,
AVPacket *pkt)
{
- FlicDemuxContext *flic = (FlicDemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
+ FlicDemuxContext *flic = s->priv_data;
+ AVIOContext *pb = s->pb;
int packet_read = 0;
unsigned int size;
int magic;
while (!packet_read) {
- if ((ret = get_buffer(pb, preamble, FLIC_PREAMBLE_SIZE)) !=
+ if ((ret = avio_read(pb, preamble, FLIC_PREAMBLE_SIZE)) !=
FLIC_PREAMBLE_SIZE) {
- ret = -EIO;
+ ret = AVERROR(EIO);
break;
}
- size = LE_32(&preamble[0]);
- magic = LE_16(&preamble[4]);
+ size = AV_RL32(&preamble[0]);
+ magic = AV_RL16(&preamble[4]);
- if ((magic == FLIC_CHUNK_MAGIC_1) || (magic == FLIC_CHUNK_MAGIC_2)) {
+ if (((magic == FLIC_CHUNK_MAGIC_1) || (magic == FLIC_CHUNK_MAGIC_2)) && size > FLIC_PREAMBLE_SIZE) {
if (av_new_packet(pkt, size)) {
- ret = -EIO;
+ ret = AVERROR(EIO);
break;
}
pkt->stream_index = flic->video_stream_index;
- pkt->pts = flic->pts;
+ pkt->pts = flic->frame_number++;
+ pkt->pos = avio_tell(pb);
memcpy(pkt->data, preamble, FLIC_PREAMBLE_SIZE);
- ret = get_buffer(pb, pkt->data + FLIC_PREAMBLE_SIZE,
+ ret = avio_read(pb, pkt->data + FLIC_PREAMBLE_SIZE,
size - FLIC_PREAMBLE_SIZE);
if (ret != size - FLIC_PREAMBLE_SIZE) {
- av_free_packet(pkt);
- ret = -EIO;
+ av_packet_unref(pkt);
+ ret = AVERROR(EIO);
}
- flic->pts += flic->frame_pts_inc;
+ packet_read = 1;
+ } else if (magic == FLIC_TFTD_CHUNK_AUDIO) {
+ if (av_new_packet(pkt, size)) {
+ ret = AVERROR(EIO);
+ break;
+ }
+
+ /* skip useless 10B sub-header (yes, it's not accounted for in the chunk header) */
+ avio_skip(pb, 10);
+
+ pkt->stream_index = flic->audio_stream_index;
+ pkt->pos = avio_tell(pb);
+ ret = avio_read(pb, pkt->data, size);
+
+ if (ret != size) {
+ av_packet_unref(pkt);
+ ret = AVERROR(EIO);
+ }
+
packet_read = 1;
} else {
/* not interested in this chunk */
- url_fseek(pb, size - 6, SEEK_CUR);
+ avio_skip(pb, size - 6);
}
}
return ret;
}
-static int flic_read_close(AVFormatContext *s)
-{
-// FlicDemuxContext *flic = (FlicDemuxContext *)s->priv_data;
-
- return 0;
-}
-
-static AVInputFormat flic_iformat = {
- "flic",
- "FLI/FLC animation format",
- sizeof(FlicDemuxContext),
- flic_probe,
- flic_read_header,
- flic_read_packet,
- flic_read_close,
+AVInputFormat ff_flic_demuxer = {
+ .name = "flic",
+ .long_name = NULL_IF_CONFIG_SMALL("FLI/FLC/FLX animation"),
+ .priv_data_size = sizeof(FlicDemuxContext),
+ .read_probe = flic_probe,
+ .read_header = flic_read_header,
+ .read_packet = flic_read_packet,
};
-
-int flic_init(void)
-{
- av_register_input_format(&flic_iformat);
- return 0;
-}
projects / ffmpeg / blobdiff