2012-03-17 18:43:58 +01:00
|
|
|
/*
|
|
|
|
* XBM image format
|
|
|
|
*
|
|
|
|
* Copyright (c) 2012 Paul B Mahol
|
|
|
|
*
|
2012-06-29 03:55:56 +02:00
|
|
|
* This file is part of FFmpeg.
|
2012-03-17 18:43:58 +01:00
|
|
|
*
|
2012-06-29 03:55:56 +02:00
|
|
|
* FFmpeg is free software; you can redistribute it and/or
|
2012-03-17 18:43:58 +01:00
|
|
|
* 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.
|
|
|
|
*
|
2012-06-29 03:55:56 +02:00
|
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
2012-03-17 18:43:58 +01:00
|
|
|
* 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
|
2012-06-29 03:55:56 +02:00
|
|
|
* License along with FFmpeg; if not, write to the Free Software
|
2012-03-17 18:43:58 +01:00
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "avcodec.h"
|
2021-05-11 15:17:13 +02:00
|
|
|
#include "encode.h"
|
2012-03-17 18:43:58 +01:00
|
|
|
#include "internal.h"
|
2012-10-11 18:50:30 +02:00
|
|
|
#include "mathops.h"
|
2012-03-17 18:43:58 +01:00
|
|
|
|
2021-01-19 06:43:13 +01:00
|
|
|
#define ANSI_MIN_READLINE 509
|
|
|
|
|
2012-03-17 18:43:58 +01:00
|
|
|
static int xbm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
|
|
|
|
const AVFrame *p, int *got_packet)
|
|
|
|
{
|
2021-01-19 06:43:13 +01:00
|
|
|
int i, j, l, commas, ret, size, linesize, lineout, rowsout;
|
2012-03-17 18:43:58 +01:00
|
|
|
uint8_t *ptr, *buf;
|
|
|
|
|
2021-01-19 06:43:13 +01:00
|
|
|
linesize = lineout = (avctx->width + 7) / 8;
|
avcodec/xbmenc: Do not add last comma into output
There is a minor bug in xbm encode which adds a trailing comma at the end
of data. This isn't a big problem, but it would be nicer to be more
technically true to an array of data (by not including the last comma).
This bug fixes the output from something like this (having 4 values):
static unsigned char image_bits[] = { 0x00, 0x11, 0x22, }
to C code that looks like this instead (having 3 values):
static unsigned char image_bits[] = { 0x00, 0x11, 0x22 }
which is the intended results.
Subject: [PATCH 1/3] avcodec/xbmenc: Do not add last comma into output array
xbm outputs c arrays of data.
Including a comma at the end means there is another value to be added.
This bug fix changes something like this:
static unsigned char image_bits[] = { 0x00, 0x11, 0x22, }
to C code like this:
static unsigned char image_bits[] = { 0x00, 0x11, 0x22 }
Signed-off-by: Joe Da Silva <digital@joescat.com>
2021-01-19 06:42:57 +01:00
|
|
|
commas = avctx->height * linesize;
|
2021-01-19 06:43:13 +01:00
|
|
|
|
|
|
|
/* ANSI worst case minimum readline is 509 chars. */
|
|
|
|
rowsout = avctx->height;
|
|
|
|
if (lineout > (ANSI_MIN_READLINE / 6)) {
|
|
|
|
lineout = ANSI_MIN_READLINE / 6;
|
|
|
|
rowsout = (commas + lineout - 1) / lineout;
|
|
|
|
}
|
|
|
|
|
|
|
|
size = rowsout * (lineout * 6 + 1) + 106;
|
2021-05-11 15:17:13 +02:00
|
|
|
if ((ret = ff_alloc_packet(avctx, pkt, size)) < 0)
|
2012-03-17 18:43:58 +01:00
|
|
|
return ret;
|
|
|
|
|
|
|
|
buf = pkt->data;
|
|
|
|
ptr = p->data[0];
|
|
|
|
|
|
|
|
buf += snprintf(buf, 32, "#define image_width %u\n", avctx->width);
|
|
|
|
buf += snprintf(buf, 33, "#define image_height %u\n", avctx->height);
|
2021-01-19 06:43:05 +01:00
|
|
|
buf += snprintf(buf, 39, "static unsigned char image_bits[] = {\n");
|
2021-01-19 06:43:13 +01:00
|
|
|
for (i = 0, l = lineout; i < avctx->height; i++) {
|
avcodec/xbmenc: Do not add last comma into output
There is a minor bug in xbm encode which adds a trailing comma at the end
of data. This isn't a big problem, but it would be nicer to be more
technically true to an array of data (by not including the last comma).
This bug fixes the output from something like this (having 4 values):
static unsigned char image_bits[] = { 0x00, 0x11, 0x22, }
to C code that looks like this instead (having 3 values):
static unsigned char image_bits[] = { 0x00, 0x11, 0x22 }
which is the intended results.
Subject: [PATCH 1/3] avcodec/xbmenc: Do not add last comma into output array
xbm outputs c arrays of data.
Including a comma at the end means there is another value to be added.
This bug fix changes something like this:
static unsigned char image_bits[] = { 0x00, 0x11, 0x22, }
to C code like this:
static unsigned char image_bits[] = { 0x00, 0x11, 0x22 }
Signed-off-by: Joe Da Silva <digital@joescat.com>
2021-01-19 06:42:57 +01:00
|
|
|
for (j = 0; j < linesize; j++) {
|
|
|
|
buf += snprintf(buf, 6, " 0x%02X", ff_reverse[*ptr++]);
|
2021-01-19 06:43:13 +01:00
|
|
|
if (--commas <= 0) {
|
|
|
|
buf += snprintf(buf, 2, "\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
buf += snprintf(buf, 2, ",");
|
|
|
|
if (--l <= 0) {
|
|
|
|
buf += snprintf(buf, 2, "\n");
|
|
|
|
l = lineout;
|
|
|
|
}
|
avcodec/xbmenc: Do not add last comma into output
There is a minor bug in xbm encode which adds a trailing comma at the end
of data. This isn't a big problem, but it would be nicer to be more
technically true to an array of data (by not including the last comma).
This bug fixes the output from something like this (having 4 values):
static unsigned char image_bits[] = { 0x00, 0x11, 0x22, }
to C code that looks like this instead (having 3 values):
static unsigned char image_bits[] = { 0x00, 0x11, 0x22 }
which is the intended results.
Subject: [PATCH 1/3] avcodec/xbmenc: Do not add last comma into output array
xbm outputs c arrays of data.
Including a comma at the end means there is another value to be added.
This bug fix changes something like this:
static unsigned char image_bits[] = { 0x00, 0x11, 0x22, }
to C code like this:
static unsigned char image_bits[] = { 0x00, 0x11, 0x22 }
Signed-off-by: Joe Da Silva <digital@joescat.com>
2021-01-19 06:42:57 +01:00
|
|
|
}
|
2012-03-17 18:43:58 +01:00
|
|
|
ptr += p->linesize[0] - linesize;
|
|
|
|
}
|
|
|
|
buf += snprintf(buf, 5, " };\n");
|
|
|
|
|
|
|
|
pkt->size = buf - pkt->data;
|
|
|
|
*got_packet = 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2021-02-25 10:50:26 +01:00
|
|
|
const AVCodec ff_xbm_encoder = {
|
2012-03-17 18:43:58 +01:00
|
|
|
.name = "xbm",
|
2013-10-03 22:57:53 +02:00
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("XBM (X BitMap) image"),
|
2012-03-17 18:43:58 +01:00
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
2012-08-05 11:11:04 +02:00
|
|
|
.id = AV_CODEC_ID_XBM,
|
2012-03-17 18:43:58 +01:00
|
|
|
.encode2 = xbm_encode_frame,
|
2012-10-06 12:10:34 +02:00
|
|
|
.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_MONOWHITE,
|
2012-10-15 15:28:23 +02:00
|
|
|
AV_PIX_FMT_NONE },
|
2012-03-17 18:43:58 +01:00
|
|
|
};
|