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-rw-r--r--libavformat/bintext.c409
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diff --git a/libavformat/bintext.c b/libavformat/bintext.c
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--- /dev/null
+++ b/libavformat/bintext.c
@@ -0,0 +1,409 @@
+/*
+ * 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 "libavutil/opt.h"
+#include "libavutil/parseutils.h"
+#include "avformat.h"
+#include "internal.h"
+#include "sauce.h"
+#include "libavcodec/bintext.h"
+
+typedef struct {
+ const AVClass *class;
+ int chars_per_frame; /**< characters to send decoder per frame;
+ set by private options as characters per second, and then
+ converted to characters per frame at runtime */
+ char *video_size; /**< video size (WxH pixels) (private option) */
+ char *framerate; /**< frames per second (private option) */
+ uint64_t fsize; /**< file size less metadata buffer */
+} BinDemuxContext;
+
+static AVStream * init_stream(AVFormatContext *s)
+{
+ BinDemuxContext *bin = s->priv_data;
+ AVStream *st = avformat_new_stream(s, NULL);
+ if (!st)
+ return NULL;
+ st->codec->codec_tag = 0;
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+
+ if (bin->video_size) {
+ if (av_parse_video_size(&st->codec->width, &st->codec->height, bin->video_size) < 0) {
+ av_log(s, AV_LOG_ERROR, "Could not parse video size: '%s'\n", bin->video_size);
+ return NULL;
+ }
+ } else {
+ st->codec->width = (80<<3);
+ st->codec->height = (25<<4);
+ }
+
+ if (bin->framerate) {
+ AVRational framerate;
+ if (av_parse_video_rate(&framerate, bin->framerate) < 0) {
+ av_log(s, AV_LOG_ERROR, "Could not parse framerate: '%s'\n", bin->framerate);
+ return NULL;
+ }
+ avpriv_set_pts_info(st, 60, framerate.den, framerate.num);
+ } else {
+ avpriv_set_pts_info(st, 60, 1, 25);
+ }
+
+ /* simulate tty display speed */
+ bin->chars_per_frame = FFMAX(av_q2d(st->time_base) * bin->chars_per_frame, 1);
+
+ return st;
+}
+
+#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)
+{
+ AVIOContext *pb = avctx->pb;
+ char buf[36];
+ int len;
+ uint64_t start_pos = avio_size(pb) - 256;
+
+ avio_seek(pb, start_pos, SEEK_SET);
+ if (avio_read(pb, buf, sizeof(next_magic)) != sizeof(next_magic))
+ return -1;
+ if (memcmp(buf, next_magic, sizeof(next_magic)))
+ return -1;
+ if (avio_r8(pb) != 0x01)
+ return -1;
+
+ *fsize -= 256;
+
+#define GET_EFI2_META(name,size) \
+ len = avio_r8(pb); \
+ if (len < 1 || len > size) \
+ return -1; \
+ if (avio_read(pb, buf, size) == size && *buf) { \
+ buf[len] = 0; \
+ av_dict_set(&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 int bintext_read_header(AVFormatContext *s)
+{
+ BinDemuxContext *bin = s->priv_data;
+ AVIOContext *pb = s->pb;
+
+ AVStream *st = init_stream(s);
+ if (!st)
+ return AVERROR(ENOMEM);
+ st->codec->codec_id = AV_CODEC_ID_BINTEXT;
+
+ st->codec->extradata_size = 2;
+ st->codec->extradata = av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
+ st->codec->extradata[0] = 16;
+ st->codec->extradata[1] = 0;
+
+ if (pb->seekable) {
+ int got_width = 0;
+ bin->fsize = avio_size(pb);
+ if (ff_sauce_read(s, &bin->fsize, &got_width, 0) < 0)
+ next_tag_read(s, &bin->fsize);
+ if (!bin->video_size) {
+ predict_width(st->codec, bin->fsize, got_width);
+ calculate_height(st->codec, bin->fsize);
+ }
+ avio_seek(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)
+{
+ BinDemuxContext *bin = s->priv_data;
+ AVIOContext *pb = s->pb;
+ char fontheight, flags;
+
+ AVStream *st = init_stream(s);
+ if (!st)
+ return AVERROR(ENOMEM);
+
+ avio_skip(pb, 5);
+ st->codec->width = avio_rl16(pb)<<3;
+ st->codec->height = avio_rl16(pb);
+ fontheight = avio_r8(pb);
+ st->codec->height *= fontheight;
+ flags = avio_r8(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 ? AV_CODEC_ID_XBIN : AV_CODEC_ID_BINTEXT;
+
+ st->codec->extradata = av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
+ st->codec->extradata[0] = fontheight;
+ st->codec->extradata[1] = flags;
+ if (avio_read(pb, st->codec->extradata + 2, st->codec->extradata_size - 2) < 0)
+ return AVERROR(EIO);
+
+ if (pb->seekable) {
+ bin->fsize = avio_size(pb) - 9 - st->codec->extradata_size;
+ ff_sauce_read(s, &bin->fsize, NULL, 0);
+ avio_seek(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)
+{
+ BinDemuxContext *bin = s->priv_data;
+ AVIOContext *pb = s->pb;
+ AVStream *st;
+
+ if (avio_r8(pb) != 1)
+ return AVERROR_INVALIDDATA;
+
+ st = init_stream(s);
+ if (!st)
+ return AVERROR(ENOMEM);
+ st->codec->codec_id = AV_CODEC_ID_BINTEXT;
+
+ st->codec->extradata_size = 2 + 48 + 4096;
+ st->codec->extradata = av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
+ st->codec->extradata[0] = 16;
+ st->codec->extradata[1] = BINTEXT_PALETTE|BINTEXT_FONT;
+
+ if (avio_read(pb, st->codec->extradata + 2, 24) < 0)
+ return AVERROR(EIO);
+ avio_skip(pb, 144);
+ if (avio_read(pb, st->codec->extradata + 2 + 24, 24) < 0)
+ return AVERROR(EIO);
+ if (avio_read(pb, st->codec->extradata + 2 + 48, 4096) < 0)
+ return AVERROR(EIO);
+
+ if (pb->seekable) {
+ int got_width = 0;
+ bin->fsize = avio_size(pb) - 1 - 192 - 4096;
+ st->codec->width = 80<<3;
+ ff_sauce_read(s, &bin->fsize, &got_width, 0);
+ if (!bin->video_size)
+ calculate_height(st->codec, bin->fsize);
+ avio_seek(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 (p->buf_size < sizeof(idf_magic))
+ return 0;
+ if (!memcmp(p->buf, idf_magic, sizeof(idf_magic)))
+ return AVPROBE_SCORE_MAX;
+ return 0;
+}
+
+static int idf_read_header(AVFormatContext *s)
+{
+ BinDemuxContext *bin = s->priv_data;
+ AVIOContext *pb = s->pb;
+ AVStream *st;
+ int got_width = 0;
+
+ if (!pb->seekable)
+ return AVERROR(EIO);
+
+ st = init_stream(s);
+ if (!st)
+ return AVERROR(ENOMEM);
+ st->codec->codec_id = AV_CODEC_ID_IDF;
+
+ st->codec->extradata_size = 2 + 48 + 4096;
+ st->codec->extradata = av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
+ st->codec->extradata[0] = 16;
+ st->codec->extradata[1] = BINTEXT_PALETTE|BINTEXT_FONT;
+
+ avio_seek(pb, avio_size(pb) - 4096 - 48, SEEK_SET);
+
+ if (avio_read(pb, st->codec->extradata + 2 + 48, 4096) < 0)
+ return AVERROR(EIO);
+ if (avio_read(pb, st->codec->extradata + 2, 48) < 0)
+ return AVERROR(EIO);
+
+ bin->fsize = avio_size(pb) - 12 - 4096 - 48;
+ ff_sauce_read(s, &bin->fsize, &got_width, 0);
+ if (!bin->video_size)
+ calculate_height(st->codec, bin->fsize);
+ avio_seek(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;
+}
+
+#define OFFSET(x) offsetof(BinDemuxContext, x)
+static const AVOption options[] = {
+ { "linespeed", "set simulated line speed (bytes per second)", OFFSET(chars_per_frame), AV_OPT_TYPE_INT, {.i64 = 6000}, 1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM},
+ { "video_size", "set video size, such as 640x480 or hd720.", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, AV_OPT_FLAG_DECODING_PARAM },
+ { "framerate", "set framerate (frames per second)", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, AV_OPT_FLAG_DECODING_PARAM },
+ { NULL },
+};
+
+#define CLASS(name) \
+(const AVClass[1]){{ \
+ .class_name = name, \
+ .item_name = av_default_item_name, \
+ .option = options, \
+ .version = LIBAVUTIL_VERSION_INT, \
+}}
+
+#if CONFIG_BINTEXT_DEMUXER
+AVInputFormat ff_bintext_demuxer = {
+ .name = "bin",
+ .long_name = NULL_IF_CONFIG_SMALL("Binary text"),
+ .priv_data_size = sizeof(BinDemuxContext),
+ .read_header = bintext_read_header,
+ .read_packet = read_packet,
+ .extensions = "bin",
+ .priv_class = CLASS("Binary text demuxer"),
+};
+#endif
+
+#if CONFIG_XBIN_DEMUXER
+AVInputFormat ff_xbin_demuxer = {
+ .name = "xbin",
+ .long_name = NULL_IF_CONFIG_SMALL("eXtended BINary text (XBIN)"),
+ .priv_data_size = sizeof(BinDemuxContext),
+ .read_probe = xbin_probe,
+ .read_header = xbin_read_header,
+ .read_packet = read_packet,
+ .priv_class = CLASS("eXtended BINary text (XBIN) demuxer"),
+};
+#endif
+
+#if CONFIG_ADF_DEMUXER
+AVInputFormat ff_adf_demuxer = {
+ .name = "adf",
+ .long_name = NULL_IF_CONFIG_SMALL("Artworx Data Format"),
+ .priv_data_size = sizeof(BinDemuxContext),
+ .read_header = adf_read_header,
+ .read_packet = read_packet,
+ .extensions = "adf",
+ .priv_class = CLASS("Artworx Data Format demuxer"),
+};
+#endif
+
+#if CONFIG_IDF_DEMUXER
+AVInputFormat ff_idf_demuxer = {
+ .name = "idf",
+ .long_name = NULL_IF_CONFIG_SMALL("iCE Draw File"),
+ .priv_data_size = sizeof(BinDemuxContext),
+ .read_probe = idf_probe,
+ .read_header = idf_read_header,
+ .read_packet = read_packet,
+ .extensions = "idf",
+ .priv_class = CLASS("iCE Draw File demuxer"),
+};
+#endif