falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
Browse Source

Binary text decoder 

Decoder and demuxer for various binary text formats.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
tags/n0.9
Peter Ross Michael Niedermayer 14 years ago
parent
ea8de109af
commit
07a70caba7
10 changed files with 689 additions and 0 deletions
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. +1
    -0
      Changelog
  2. +4
    -0
      doc/general.texi
  3. +3
    -0
      libavcodec/Makefile
  4. +5
    -0
      libavcodec/allcodecs.c
  5. +3
    -0
      libavcodec/avcodec.h
  6. +252
    -0
      libavcodec/bintext.c
  7. +37
    -0
      libavcodec/bintext.h
  8. +4
    -0
      libavformat/Makefile
  9. +4
    -0
      libavformat/allformats.c
  10. +376
    -0
      libavformat/bintext.c

+ 1
- 0
Changelog View File

@@ -54,6 +54,7 @@ easier to use. The changes are:
- Optional C++ Support (needed for libstagefright)
- H.264 Decoding on Android via Stagefright
- Prores decoder
- BIN/XBIN/ADF/IDF text file decoder


version 0.8:


+ 4
- 0
doc/general.texi View File

@@ -51,6 +51,7 @@ library:
@tab Multimedia format used in games like Mad Dog McCree.
@item 3GPP AMR @tab X @tab X
@item Apple HTTP Live Streaming @tab @tab X
@item Artworx Data Format @tab @tab X
@item ASF @tab X @tab X
@item AVI @tab X @tab X
@item AVISynth @tab @tab X
@@ -60,6 +61,7 @@ library:
@tab Audio and video format used in some games by Beam Software.
@item Bethesda Softworks VID @tab @tab X
@tab Used in some games from Bethesda Softworks.
@item Binary text @tab @tab C
@item Bink @tab @tab X
@tab Multimedia format used by many games.
@item Bitmap Brothers JV @tab @tab X
@@ -106,6 +108,7 @@ library:
@item GXF @tab X @tab X
@tab General eXchange Format SMPTE 360M, used by Thomson Grass Valley
playout servers.
@item iCEDraw File @tab @tab X
@item id Quake II CIN video @tab @tab X
@item id RoQ @tab X @tab X
@tab Used in Quake III, Jedi Knight 2, other computer games.
@@ -267,6 +270,7 @@ library:
@tab Microsoft video container used in Xbox games.
@item xWMA @tab @tab X
@tab Microsoft audio container used by XAudio 2.
@item eXtended BINary text (XBIN) @tab @tab X
@item YUV4MPEG pipe @tab X @tab X
@item Psygnosis YOP @tab @tab X
@end multitable


+ 3
- 0
libavcodec/Makefile View File

@@ -96,6 +96,7 @@ OBJS-$(CONFIG_BFI_DECODER) += bfi.o
OBJS-$(CONFIG_BINK_DECODER) += bink.o binkdsp.o
OBJS-$(CONFIG_BINKAUDIO_DCT_DECODER) += binkaudio.o wma.o
OBJS-$(CONFIG_BINKAUDIO_RDFT_DECODER) += binkaudio.o wma.o
OBJS-$(CONFIG_BINTEXT_DECODER) += bintext.o cga_data.o
OBJS-$(CONFIG_BMP_DECODER) += bmp.o msrledec.o
OBJS-$(CONFIG_BMP_ENCODER) += bmpenc.o
OBJS-$(CONFIG_C93_DECODER) += c93.o
@@ -188,6 +189,7 @@ OBJS-$(CONFIG_H264_VAAPI_HWACCEL) += vaapi_h264.o
OBJS-$(CONFIG_HUFFYUV_DECODER) += huffyuv.o
OBJS-$(CONFIG_HUFFYUV_ENCODER) += huffyuv.o
OBJS-$(CONFIG_IDCIN_DECODER) += idcinvideo.o
OBJS-$(CONFIG_IDF_DECODER) += bintext.o cga_data.o
OBJS-$(CONFIG_IFF_BYTERUN1_DECODER) += iff.o
OBJS-$(CONFIG_IFF_ILBM_DECODER) += iff.o
OBJS-$(CONFIG_IMC_DECODER) += imc.o
@@ -440,6 +442,7 @@ OBJS-$(CONFIG_WS_SND1_DECODER) += ws-snd1.o
OBJS-$(CONFIG_XAN_DPCM_DECODER) += dpcm.o
OBJS-$(CONFIG_XAN_WC3_DECODER) += xan.o
OBJS-$(CONFIG_XAN_WC4_DECODER) += xxan.o
OBJS-$(CONFIG_XBIN_DECODER) += bintext.o cga_data.o
OBJS-$(CONFIG_XL_DECODER) += xl.o
OBJS-$(CONFIG_XSUB_DECODER) += xsubdec.o
OBJS-$(CONFIG_XSUB_ENCODER) += xsubenc.o


+ 5
- 0
libavcodec/allcodecs.c View File

@@ -393,6 +393,11 @@ void avcodec_register_all(void)
REGISTER_ENCODER (LIBXAVS, libxavs);
REGISTER_ENCODER (LIBXVID, libxvid);

/* text */
REGISTER_DECODER (BINTEXT, bintext);
REGISTER_DECODER (XBIN, xbin);
REGISTER_DECODER (IDF, idf);

/* parsers */
REGISTER_PARSER (AAC, aac);
REGISTER_PARSER (AAC_LATM, aac_latm);


+ 3
- 0
libavcodec/avcodec.h View File

@@ -361,6 +361,9 @@ enum CodecID {
/* other specific kind of codecs (generally used for attachments) */
CODEC_ID_FIRST_UNKNOWN = 0x18000, ///< A dummy ID pointing at the start of various fake codecs.
CODEC_ID_TTF= 0x18000,
CODEC_ID_BINTEXT,
CODEC_ID_XBIN,
CODEC_ID_IDF,

CODEC_ID_PROBE= 0x19000, ///< codec_id is not known (like CODEC_ID_NONE) but lavf should attempt to identify it



+ 252
- 0
libavcodec/bintext.c View File

@@ -0,0 +1,252 @@
/*
* Binary text decoder
* eXtended BINary text (XBIN) decoder
* iCEDraw File decoder
* Copyright (c) 2010 Peter Ross (pross@xvid.org)
*
* 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 2.1 of the License, or (at your option) any later version.
*
* 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

/**
* @file libavcodec/xbin.c
* Binary text decoder
* eXtended BINary text (XBIN) decoder
* iCEDraw File decoder
*/

#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "cga_data.h"
#include "bintext.h"

typedef struct XbinContext {
AVFrame frame;
int palette[16];
int flags;
int font_height;
const uint8_t *font;
int x, y;
} XbinContext;

static av_cold int decode_init(AVCodecContext *avctx)
{
XbinContext *s = avctx->priv_data;
uint8_t *p;
int i;

avctx->pix_fmt = PIX_FMT_PAL8;
s->frame.reference = 1;
if (avctx->get_buffer(avctx, &s->frame)) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}

p = avctx->extradata;
if (p) {
s->font_height = p[0];
s->flags = p[1];
p += 2;
} else {
s->font_height = 8;
s->flags = 0;
}

if ((s->flags & BINTEXT_PALETTE)) {
for (i = 0; i < 16; i++) {
s->palette[i] = 0xFF000000 | (AV_RB24(p) << 2);
p += 3;
}
} else {
for (i = 0; i < 16; i++)
s->palette[i] = 0xFF000000 | ff_cga_palette[i];
}

if ((s->flags & BINTEXT_FONT)) {
s->font = p;
} else {
switch(s->font_height) {
default:
av_log(avctx, AV_LOG_WARNING, "font height %i not support\n", s->font_height);
s->font_height = 8;
case 8:
s->font = ff_cga_font;
break;
case 16:
s->font = ff_vga16_font;
break;
}
}

return 0;
}

#define DEFAULT_BG_COLOR 0
static void hscroll(AVCodecContext *avctx)
{
XbinContext *s = avctx->priv_data;
if (s->y < avctx->height - s->font_height) {
s->y += s->font_height;
} else {
memmove(s->frame.data[0], s->frame.data[0] + s->font_height*s->frame.linesize[0],
(avctx->height - s->font_height)*s->frame.linesize[0]);
memset(s->frame.data[0] + (avctx->height - s->font_height)*s->frame.linesize[0],
DEFAULT_BG_COLOR, s->font_height * s->frame.linesize[0]);
}
}

#define FONT_WIDTH 8

/**
* Draw character to screen
*/
static void draw_char(AVCodecContext *avctx, int c, int a)
{
XbinContext *s = avctx->priv_data;
if (s->y > avctx->height - s->font_height)
return;
ff_draw_pc_font(s->frame.data[0] + s->y * s->frame.linesize[0] + s->x,
s->frame.linesize[0], s->font, s->font_height, c,
a & 0x0F, a >> 4);
s->x += FONT_WIDTH;
if (s->x >= avctx->width) {
s->x = 0;
s->y += s->font_height;
}
}

static int decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
AVPacket *avpkt)
{
XbinContext *s = avctx->priv_data;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
const uint8_t *buf_end = buf+buf_size;

if (avctx->reget_buffer(avctx, &s->frame)) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
s->frame.pict_type = FF_I_TYPE;
s->frame.palette_has_changed = 1;
memcpy(s->frame.data[1], s->palette, 16 * 4);

if (avctx->codec_id == CODEC_ID_XBIN) {
while (buf + 2 < buf_end) {
int i,c,a;
int type = *buf >> 6;
int count = (*buf & 0x3F) + 1;
buf++;
switch (type) {
case 0: //no compression
for (i = 0; i < count && buf + 1 < buf_end; i++) {
draw_char(avctx, buf[0], buf[1]);
buf += 2;
}
break;
case 1: //character compression
c = *buf++;
for (i = 0; i < count && buf < buf_end; i++)
draw_char(avctx, c, *buf++);
break;
case 2: //attribute compression
a = *buf++;
for (i = 0; i < count && buf < buf_end; i++)
draw_char(avctx, *buf++, a);
break;
case 3: //character/attribute compression
c = *buf++;
a = *buf++;
for (i = 0; i < count && buf < buf_end; i++)
draw_char(avctx, c, a);
break;
}
}
} else if (avctx->codec_id == CODEC_ID_IDF) {
while (buf + 2 < buf_end) {
if (AV_RL16(buf) == 1) {
int i;
if (buf + 6 > buf_end)
break;
for (i = 0; i < buf[2]; i++)
draw_char(avctx, buf[4], buf[5]);
buf += 6;
} else {
draw_char(avctx, buf[0], buf[1]);
buf += 2;
}
}
} else {
while (buf + 1 < buf_end) {
draw_char(avctx, buf[0], buf[1]);
buf += 2;
}
}

*data_size = sizeof(AVFrame);
*(AVFrame*)data = s->frame;
return buf_size;
}

static av_cold int decode_end(AVCodecContext *avctx)
{
XbinContext *s = avctx->priv_data;

if (s->frame.data[0])
avctx->release_buffer(avctx, &s->frame);

return 0;
}

AVCodec ff_bintext_decoder = {
"xbin",
AVMEDIA_TYPE_VIDEO,
CODEC_ID_BINTEXT,
sizeof(XbinContext),
decode_init,
NULL,
decode_end,
decode_frame,
CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Binary text"),
};

AVCodec ff_xbin_decoder = {
"xbin",
AVMEDIA_TYPE_VIDEO,
CODEC_ID_XBIN,
sizeof(XbinContext),
decode_init,
NULL,
decode_end,
decode_frame,
CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("eXtended BINary text"),
};

AVCodec ff_idf_decoder = {
"idf",
AVMEDIA_TYPE_VIDEO,
CODEC_ID_IDF,
sizeof(XbinContext),
decode_init,
NULL,
decode_end,
decode_frame,
CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("iCEDraw text"),
};

+ 37
- 0
libavcodec/bintext.h View File

@@ -0,0 +1,37 @@
/*
* Binary text decoder
* Copyright (c) 2010 Peter Ross (pross@xvid.org)
*
* 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 2.1 of the License, or (at your option) any later version.
*
* 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

/**
* @file
* Binary text decoder
*/

#ifndef AVCODEC_BINTEXT_H
#define AVCODEC_BINTEXT_H

/* flag values passed between avformat and avcodec;
* while these are identical to the XBIN flags, they are are also used
* for the BINTEXT and IDF decoders.
*/
#define BINTEXT_PALETTE 0x1
#define BINTEXT_FONT 0x2

#endif /* AVCODEC_BINTEXT_H */

+ 4
- 0
libavformat/Makefile View File

@@ -21,6 +21,7 @@ OBJS-$(CONFIG_A64_MUXER) += a64.o
OBJS-$(CONFIG_AAC_DEMUXER) += aacdec.o rawdec.o
OBJS-$(CONFIG_AC3_DEMUXER) += ac3dec.o rawdec.o
OBJS-$(CONFIG_AC3_MUXER) += rawenc.o
OBJS-$(CONFIG_ADF_DEMUXER) += bintext.o sauce.o
OBJS-$(CONFIG_ADTS_MUXER) += adtsenc.o
OBJS-$(CONFIG_AEA_DEMUXER) += aea.o pcm.o
OBJS-$(CONFIG_AIFF_DEMUXER) += aiffdec.o riff.o pcm.o isom.o
@@ -46,6 +47,7 @@ OBJS-$(CONFIG_AVS_DEMUXER) += avs.o vocdec.o voc.o
OBJS-$(CONFIG_BETHSOFTVID_DEMUXER) += bethsoftvid.o
OBJS-$(CONFIG_BFI_DEMUXER) += bfi.o
OBJS-$(CONFIG_BINK_DEMUXER) += bink.o
OBJS-$(CONFIG_BINTEXT_DEMUXER) += bintext.o sauce.o
OBJS-$(CONFIG_C93_DEMUXER) += c93.o vocdec.o voc.o
OBJS-$(CONFIG_CAF_DEMUXER) += cafdec.o caf.o mov.o riff.o isom.o
OBJS-$(CONFIG_CAF_MUXER) += cafenc.o caf.o riff.o isom.o
@@ -100,6 +102,7 @@ OBJS-$(CONFIG_H263_MUXER) += rawenc.o
OBJS-$(CONFIG_H264_DEMUXER) += h264dec.o rawdec.o
OBJS-$(CONFIG_H264_MUXER) += rawenc.o
OBJS-$(CONFIG_IDCIN_DEMUXER) += idcin.o
OBJS-$(CONFIG_IDF_DEMUXER) += bintext.o
OBJS-$(CONFIG_IFF_DEMUXER) += iff.o
OBJS-$(CONFIG_IMAGE2_DEMUXER) += img2.o
OBJS-$(CONFIG_IMAGE2_MUXER) += img2.o
@@ -308,6 +311,7 @@ OBJS-$(CONFIG_WTV_DEMUXER) += wtvdec.o wtv.o asfdec.o asf.o asfcry
OBJS-$(CONFIG_WTV_MUXER) += wtvenc.o wtv.o asf.o riff.o
OBJS-$(CONFIG_WV_DEMUXER) += wv.o apetag.o
OBJS-$(CONFIG_XA_DEMUXER) += xa.o
OBJS-$(CONFIG_XBIN_DEMUXER) += bintext.o sauce.o
OBJS-$(CONFIG_XMV_DEMUXER) += xmv.o
OBJS-$(CONFIG_XWMA_DEMUXER) += xwma.o riff.o
OBJS-$(CONFIG_YOP_DEMUXER) += yop.o


+ 4
- 0
libavformat/allformats.c View File

@@ -51,6 +51,7 @@ void av_register_all(void)
REGISTER_MUXER (A64, a64);
REGISTER_DEMUXER (AAC, aac);
REGISTER_MUXDEMUX (AC3, ac3);
REGISTER_DEMUXER (ADF, adf);
REGISTER_MUXER (ADTS, adts);
REGISTER_DEMUXER (AEA, aea);
REGISTER_MUXDEMUX (AIFF, aiff);
@@ -69,6 +70,7 @@ void av_register_all(void)
REGISTER_DEMUXER (AVS, avs);
REGISTER_DEMUXER (BETHSOFTVID, bethsoftvid);
REGISTER_DEMUXER (BFI, bfi);
REGISTER_DEMUXER (BINTEXT, bintext);
REGISTER_DEMUXER (BINK, bink);
REGISTER_DEMUXER (C93, c93);
REGISTER_MUXDEMUX (CAF, caf);
@@ -103,6 +105,7 @@ void av_register_all(void)
REGISTER_MUXDEMUX (H263, h263);
REGISTER_MUXDEMUX (H264, h264);
REGISTER_DEMUXER (IDCIN, idcin);
REGISTER_DEMUXER (IDF, idf);
REGISTER_DEMUXER (IFF, iff);
REGISTER_MUXDEMUX (IMAGE2, image2);
REGISTER_MUXDEMUX (IMAGE2PIPE, image2pipe);
@@ -229,6 +232,7 @@ void av_register_all(void)
REGISTER_MUXDEMUX (WTV, wtv);
REGISTER_DEMUXER (WV, wv);
REGISTER_DEMUXER (XA, xa);
REGISTER_DEMUXER (XBIN, xbin);
REGISTER_DEMUXER (XMV, xmv);
REGISTER_DEMUXER (XWMA, xwma);
REGISTER_DEMUXER (YOP, yop);


+ 376
- 0
libavformat/bintext.c View File

@@ -0,0 +1,376 @@
/*
* Binary text demuxer
* eXtended BINary text (XBIN) demuxer
* Artworx Data Format demuxer
* iCEDraw File demuxer
* Copyright (c) 2010 Peter Ross <pross@xvid.org>
*
* 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 2.1 of the License, or (at your option) any later version.
*
* 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

/**
* @file
* Binary text demuxer
* eXtended BINary text (XBIN) demuxer
* Artworx Data Format demuxer
* iCEDraw File demuxer
*/

#include "libavutil/intreadwrite.h"
#include "avformat.h"
#include "sauce.h"
#include "libavcodec/bintext.h"

#define LINE_RATE 6000 /** characters per second */

typedef struct {
int chars_per_frame;
uint64_t fsize; /**< file size less metadata buffer */
} BinDemuxContext;

#if CONFIG_BINTEXT_DEMUXER | CONFIG_ADF_DEMUXER | CONFIG_IDF_DEMUXER
/**
* Given filesize and width, calculate height (assume font_height of 16)
*/
static void calculate_height(AVCodecContext *avctx, uint64_t fsize)
{
avctx->height = (fsize / ((avctx->width>>3)*2)) << 4;
}
#endif

#if CONFIG_BINTEXT_DEMUXER
static const uint8_t next_magic[]={
0x1A, 0x1B, '[', '0', ';', '3', '0', ';', '4', '0', 'm', 'N', 'E', 'X', 'T', 0x00
};

static int next_tag_read(AVFormatContext *avctx, uint64_t *fsize)
{
ByteIOContext *pb = avctx->pb;
char buf[36];
int len;
uint64_t start_pos = url_fsize(pb) - 256;

url_fseek(pb, start_pos, SEEK_SET);
if (get_buffer(pb, buf, sizeof(next_magic)) != sizeof(next_magic))
return -1;
if (memcmp(buf, next_magic, sizeof(next_magic)))
return -1;
if (get_byte(pb) != 0x01)
return -1;

*fsize -= 256;

#define GET_EFI2_META(name,size) \
len = get_byte(pb); \
if (len < 1 || len > size) \
return -1; \
if (get_buffer(pb, buf, size) == size && *buf) { \
buf[len] = 0; \
av_metadata_set2(&avctx->metadata, name, buf, 0); \
}

GET_EFI2_META("filename", 12)
GET_EFI2_META("author", 20)
GET_EFI2_META("publisher", 20)
GET_EFI2_META("title", 35)

return 0;
}

static void predict_width(AVCodecContext *avctx, uint64_t fsize, int got_width)
{
/** attempt to guess width */
if (!got_width)
avctx->width = fsize > 4000 ? (160<<3) : (80<<3);
}

static AVStream * init_stream(AVFormatContext *s,
AVFormatParameters *ap)
{
BinDemuxContext *bin = s->priv_data;
AVStream *st = av_new_stream(s, 0);
if (!st)
return NULL;
st->codec->codec_tag = 0;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;

if (!ap->time_base.num) {
av_set_pts_info(st, 60, 1, 25);
} else {
av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
}

/* simulate tty display speed */
bin->chars_per_frame = FFMAX(av_q2d(st->time_base) * (ap->sample_rate ? ap->sample_rate : LINE_RATE), 1);

st->codec->width = ap->width ? ap->width : (80<<3);
st->codec->height = ap->height ? ap->height : (25<<4);
return st;
}

static int bintext_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
BinDemuxContext *bin = s->priv_data;
ByteIOContext *pb = s->pb;

AVStream *st = init_stream(s, ap);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_id = CODEC_ID_BINTEXT;

st->codec->extradata_size = 2;
st->codec->extradata = av_malloc(st->codec->extradata_size);
if (!st->codec->extradata)
return AVERROR(ENOMEM);
st->codec->extradata[0] = 16;
st->codec->extradata[1] = 0;

if (!url_is_streamed(pb)) {
int got_width = 0;
bin->fsize = url_fsize(pb);
if (ff_sauce_read(s, &bin->fsize, &got_width, 0) < 0)
next_tag_read(s, &bin->fsize);
if (!ap->width)
predict_width(st->codec, bin->fsize, got_width);
if (!ap->height)
calculate_height(st->codec, bin->fsize);
url_fseek(pb, 0, SEEK_SET);
}
return 0;
};
#endif /* CONFIG_BINTEXT_DEMUXER */

#if CONFIG_XBIN_DEMUXER
static int xbin_probe(AVProbeData *p)
{
const uint8_t *d = p->buf;

if (AV_RL32(d) == MKTAG('X','B','I','N') && d[4] == 0x1A &&
AV_RL16(d+5) > 0 && AV_RL16(d+5) <= 160 &&
d[9] > 0 && d[9] <= 32)
return AVPROBE_SCORE_MAX;
return 0;
}

static int xbin_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
BinDemuxContext *bin = s->priv_data;
ByteIOContext *pb = s->pb;
char fontheight, flags;
uint8_t *h;

AVStream *st = init_stream(s, ap);
if (!st)
return AVERROR(ENOMEM);

url_fskip(pb, 5);
st->codec->width = get_le16(pb)<<3;
st->codec->height = get_le16(pb);
fontheight = get_byte(pb);
st->codec->height *= fontheight;
flags = get_byte(pb);

st->codec->extradata_size = 2;
if ((flags & BINTEXT_PALETTE))
st->codec->extradata_size += 48;
if ((flags & BINTEXT_FONT))
st->codec->extradata_size += fontheight * (flags & 0x10 ? 512 : 256);
st->codec->codec_id = flags & 4 ? CODEC_ID_XBIN : CODEC_ID_BINTEXT;

h = st->codec->extradata = av_malloc(st->codec->extradata_size);
if (!st->codec->extradata)
return AVERROR(ENOMEM);
st->codec->extradata[0] = fontheight;
st->codec->extradata[1] = flags;
if (get_buffer(pb, st->codec->extradata + 2, st->codec->extradata_size - 2) < 0)
return AVERROR(EIO);

if (!url_is_streamed(pb)) {
bin->fsize = url_fsize(pb) - 9 - st->codec->extradata_size;
ff_sauce_read(s, &bin->fsize, NULL, 0);
url_fseek(pb, 9 + st->codec->extradata_size, SEEK_SET);
}

return 0;
}
#endif /* CONFIG_XBIN_DEMUXER */

#if CONFIG_ADF_DEMUXER
static int adf_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
BinDemuxContext *bin = s->priv_data;
ByteIOContext *pb = s->pb;
AVStream *st;

if (get_byte(pb) != 1)
return AVERROR_INVALIDDATA;

st = init_stream(s, ap);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_id = CODEC_ID_BINTEXT;

st->codec->extradata_size = 2 + 48 + 4096;
st->codec->extradata = av_malloc(st->codec->extradata_size);
if (!st->codec->extradata)
return AVERROR(ENOMEM);
st->codec->extradata[0] = 16;
st->codec->extradata[1] = BINTEXT_PALETTE|BINTEXT_FONT;

if (get_buffer(pb, st->codec->extradata + 2, 24) < 0)
return AVERROR(EIO);
url_fskip(pb, 144);
if (get_buffer(pb, st->codec->extradata + 2 + 24, 24) < 0)
return AVERROR(EIO);
if (get_buffer(pb, st->codec->extradata + 2 + 48, 4096) < 0)
return AVERROR(EIO);

if (!url_is_streamed(pb)) {
int got_width = 0;
bin->fsize = url_fsize(pb) - 1 - 192 - 4096;
st->codec->width = 80<<3;
ff_sauce_read(s, &bin->fsize, &got_width, 0);
if (!ap->height)
calculate_height(st->codec, bin->fsize);
url_fseek(pb, 1 + 192 + 4096, SEEK_SET);
}
return 0;
}
#endif /* CONFIG_ADF_DEMUXER */

#if CONFIG_IDF_DEMUXER
static const uint8_t idf_magic[] = {
0x04, 0x31, 0x2e, 0x34, 0x00, 0x00, 0x00, 0x00, 0x4f, 0x00, 0x15, 0x00
};

static int idf_probe(AVProbeData *p)
{
if (!memcmp(p->buf, idf_magic, FFMIN(sizeof(idf_magic), p->buf_size)))
return AVPROBE_SCORE_MAX;
return 0;
}

static int idf_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
BinDemuxContext *bin = s->priv_data;
ByteIOContext *pb = s->pb;
AVStream *st;
int got_width = 0;

if (url_is_streamed(pb))
return AVERROR(EIO);

st = init_stream(s, ap);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_id = CODEC_ID_IDF;

st->codec->extradata_size = 2 + 48 + 4096;
st->codec->extradata = av_malloc(st->codec->extradata_size);
if (!st->codec->extradata)
return AVERROR(ENOMEM);
st->codec->extradata[0] = 16;
st->codec->extradata[1] = BINTEXT_PALETTE|BINTEXT_FONT;

url_fseek(pb, url_fsize(pb) - 4096 - 48, SEEK_SET);

if (get_buffer(pb, st->codec->extradata + 2 + 48, 4096) < 0)
return AVERROR(EIO);
if (get_buffer(pb, st->codec->extradata + 2, 48) < 0)
return AVERROR(EIO);

bin->fsize = url_fsize(pb) - 12 - 4096 - 48;
ff_sauce_read(s, &bin->fsize, &got_width, 0);
if (!ap->height)
calculate_height(st->codec, bin->fsize);
url_fseek(pb, 12, SEEK_SET);
return 0;
}
#endif /* CONFIG_IDF_DEMUXER */

static int read_packet(AVFormatContext *s,
AVPacket *pkt)
{
BinDemuxContext *bin = s->priv_data;

if (bin->fsize > 0) {
if (av_get_packet(s->pb, pkt, bin->fsize) < 0)
return AVERROR(EIO);
bin->fsize = -1; /* done */
} else if (!bin->fsize) {
if (url_feof(s->pb))
return AVERROR(EIO);
if (av_get_packet(s->pb, pkt, bin->chars_per_frame) < 0)
return AVERROR(EIO);
} else {
return AVERROR(EIO);
}

pkt->flags |= AV_PKT_FLAG_KEY;
return 0;
}

#if CONFIG_BINTEXT_DEMUXER
AVInputFormat ff_bintext_demuxer = {
"bin",
NULL_IF_CONFIG_SMALL("Binary text"),
sizeof(BinDemuxContext),
NULL,
bintext_read_header,
read_packet,
.extensions = "bin",
};
#endif

#if CONFIG_XBIN_DEMUXER
AVInputFormat ff_xbin_demuxer = {
"xbin",
NULL_IF_CONFIG_SMALL("eXtended BINary text (XBIN)"),
sizeof(BinDemuxContext),
xbin_probe,
xbin_read_header,
read_packet,
};
#endif

#if CONFIG_ADF_DEMUXER
AVInputFormat ff_adf_demuxer = {
"adf",
NULL_IF_CONFIG_SMALL("Artworx Data Format"),
sizeof(BinDemuxContext),
NULL,
adf_read_header,
read_packet,
.extensions = "adf",
};
#endif

#if CONFIG_IDF_DEMUXER
AVInputFormat ff_idf_demuxer = {
"idf",
NULL_IF_CONFIG_SMALL("iCE Draw File"),
sizeof(BinDemuxContext),
idf_probe,
idf_read_header,
read_packet,
.extensions = "idf",
};
#endif

Write Preview
Loading…
Cancel
Save