mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
253 lines
8.9 KiB
C
253 lines
8.9 KiB
C
/*
|
|
* XWD image format
|
|
*
|
|
* Copyright (c) 2012 Paul B Mahol
|
|
*
|
|
* 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 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* 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 Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "avcodec.h"
|
|
#include "bytestream.h"
|
|
#include "internal.h"
|
|
#include "xwd.h"
|
|
|
|
#define WINDOW_NAME "lavcxwdenc"
|
|
#define WINDOW_NAME_SIZE 11
|
|
|
|
static av_cold int xwd_encode_init(AVCodecContext *avctx)
|
|
{
|
|
avctx->coded_frame = av_frame_alloc();
|
|
if (!avctx->coded_frame)
|
|
return AVERROR(ENOMEM);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int xwd_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
|
|
const AVFrame *p, int *got_packet)
|
|
{
|
|
enum AVPixelFormat pix_fmt = avctx->pix_fmt;
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
|
|
uint32_t pixdepth, bpp, bpad, ncolors = 0, lsize, vclass, be = 0;
|
|
uint32_t rgb[3] = { 0 }, bitorder = 0;
|
|
uint32_t header_size;
|
|
int i, out_size, ret;
|
|
uint8_t *ptr, *buf;
|
|
|
|
pixdepth = av_get_bits_per_pixel(desc);
|
|
if (desc->flags & AV_PIX_FMT_FLAG_BE)
|
|
be = 1;
|
|
switch (pix_fmt) {
|
|
case AV_PIX_FMT_ARGB:
|
|
case AV_PIX_FMT_BGRA:
|
|
case AV_PIX_FMT_RGBA:
|
|
case AV_PIX_FMT_ABGR:
|
|
if (pix_fmt == AV_PIX_FMT_ARGB ||
|
|
pix_fmt == AV_PIX_FMT_ABGR)
|
|
be = 1;
|
|
if (pix_fmt == AV_PIX_FMT_ABGR ||
|
|
pix_fmt == AV_PIX_FMT_RGBA) {
|
|
rgb[0] = 0xFF;
|
|
rgb[1] = 0xFF00;
|
|
rgb[2] = 0xFF0000;
|
|
} else {
|
|
rgb[0] = 0xFF0000;
|
|
rgb[1] = 0xFF00;
|
|
rgb[2] = 0xFF;
|
|
}
|
|
bpp = 32;
|
|
pixdepth = 24;
|
|
vclass = XWD_TRUE_COLOR;
|
|
bpad = 32;
|
|
break;
|
|
case AV_PIX_FMT_BGR24:
|
|
case AV_PIX_FMT_RGB24:
|
|
if (pix_fmt == AV_PIX_FMT_RGB24)
|
|
be = 1;
|
|
bpp = 24;
|
|
vclass = XWD_TRUE_COLOR;
|
|
bpad = 32;
|
|
rgb[0] = 0xFF0000;
|
|
rgb[1] = 0xFF00;
|
|
rgb[2] = 0xFF;
|
|
break;
|
|
case AV_PIX_FMT_RGB565LE:
|
|
case AV_PIX_FMT_RGB565BE:
|
|
case AV_PIX_FMT_BGR565LE:
|
|
case AV_PIX_FMT_BGR565BE:
|
|
if (pix_fmt == AV_PIX_FMT_BGR565LE ||
|
|
pix_fmt == AV_PIX_FMT_BGR565BE) {
|
|
rgb[0] = 0x1F;
|
|
rgb[1] = 0x7E0;
|
|
rgb[2] = 0xF800;
|
|
} else {
|
|
rgb[0] = 0xF800;
|
|
rgb[1] = 0x7E0;
|
|
rgb[2] = 0x1F;
|
|
}
|
|
bpp = 16;
|
|
vclass = XWD_TRUE_COLOR;
|
|
bpad = 16;
|
|
break;
|
|
case AV_PIX_FMT_RGB555LE:
|
|
case AV_PIX_FMT_RGB555BE:
|
|
case AV_PIX_FMT_BGR555LE:
|
|
case AV_PIX_FMT_BGR555BE:
|
|
if (pix_fmt == AV_PIX_FMT_BGR555LE ||
|
|
pix_fmt == AV_PIX_FMT_BGR555BE) {
|
|
rgb[0] = 0x1F;
|
|
rgb[1] = 0x3E0;
|
|
rgb[2] = 0x7C00;
|
|
} else {
|
|
rgb[0] = 0x7C00;
|
|
rgb[1] = 0x3E0;
|
|
rgb[2] = 0x1F;
|
|
}
|
|
bpp = 16;
|
|
vclass = XWD_TRUE_COLOR;
|
|
bpad = 16;
|
|
break;
|
|
case AV_PIX_FMT_RGB8:
|
|
case AV_PIX_FMT_BGR8:
|
|
case AV_PIX_FMT_RGB4_BYTE:
|
|
case AV_PIX_FMT_BGR4_BYTE:
|
|
case AV_PIX_FMT_PAL8:
|
|
bpp = 8;
|
|
vclass = XWD_PSEUDO_COLOR;
|
|
bpad = 8;
|
|
ncolors = 256;
|
|
break;
|
|
case AV_PIX_FMT_MONOWHITE:
|
|
be = 1;
|
|
bitorder = 1;
|
|
bpp = 1;
|
|
bpad = 8;
|
|
vclass = XWD_STATIC_GRAY;
|
|
break;
|
|
default:
|
|
av_log(avctx, AV_LOG_INFO, "unsupported pixel format\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
lsize = FFALIGN(bpp * avctx->width, bpad) / 8;
|
|
header_size = XWD_HEADER_SIZE + WINDOW_NAME_SIZE;
|
|
out_size = header_size + ncolors * XWD_CMAP_SIZE + avctx->height * lsize;
|
|
|
|
if ((ret = ff_alloc_packet(pkt, out_size)) < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "output buffer too small\n");
|
|
return ret;
|
|
}
|
|
buf = pkt->data;
|
|
|
|
avctx->coded_frame->key_frame = 1;
|
|
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
|
|
|
|
bytestream_put_be32(&buf, header_size);
|
|
bytestream_put_be32(&buf, XWD_VERSION); // file version
|
|
bytestream_put_be32(&buf, XWD_Z_PIXMAP); // pixmap format
|
|
bytestream_put_be32(&buf, pixdepth); // pixmap depth in pixels
|
|
bytestream_put_be32(&buf, avctx->width); // pixmap width in pixels
|
|
bytestream_put_be32(&buf, avctx->height); // pixmap height in pixels
|
|
bytestream_put_be32(&buf, 0); // bitmap x offset
|
|
bytestream_put_be32(&buf, be); // byte order
|
|
bytestream_put_be32(&buf, 32); // bitmap unit
|
|
bytestream_put_be32(&buf, bitorder); // bit-order of image data
|
|
bytestream_put_be32(&buf, bpad); // bitmap scan-line pad in bits
|
|
bytestream_put_be32(&buf, bpp); // bits per pixel
|
|
bytestream_put_be32(&buf, lsize); // bytes per scan-line
|
|
bytestream_put_be32(&buf, vclass); // visual class
|
|
bytestream_put_be32(&buf, rgb[0]); // red mask
|
|
bytestream_put_be32(&buf, rgb[1]); // green mask
|
|
bytestream_put_be32(&buf, rgb[2]); // blue mask
|
|
bytestream_put_be32(&buf, 8); // size of each bitmask in bits
|
|
bytestream_put_be32(&buf, ncolors); // number of colors
|
|
bytestream_put_be32(&buf, ncolors); // number of entries in color map
|
|
bytestream_put_be32(&buf, avctx->width); // window width
|
|
bytestream_put_be32(&buf, avctx->height); // window height
|
|
bytestream_put_be32(&buf, 0); // window upper left X coordinate
|
|
bytestream_put_be32(&buf, 0); // window upper left Y coordinate
|
|
bytestream_put_be32(&buf, 0); // window border width
|
|
bytestream_put_buffer(&buf, WINDOW_NAME, WINDOW_NAME_SIZE);
|
|
|
|
for (i = 0; i < ncolors; i++) {
|
|
uint32_t val;
|
|
uint8_t red, green, blue;
|
|
|
|
val = AV_RN32A(p->data[1] + i * 4);
|
|
red = (val >> 16) & 0xFF;
|
|
green = (val >> 8) & 0xFF;
|
|
blue = val & 0xFF;
|
|
|
|
bytestream_put_be32(&buf, i); // colormap entry number
|
|
bytestream_put_be16(&buf, red << 8);
|
|
bytestream_put_be16(&buf, green << 8);
|
|
bytestream_put_be16(&buf, blue << 8);
|
|
bytestream_put_byte(&buf, 0x7); // bitmask flag
|
|
bytestream_put_byte(&buf, 0); // padding
|
|
}
|
|
|
|
ptr = p->data[0];
|
|
for (i = 0; i < avctx->height; i++) {
|
|
bytestream_put_buffer(&buf, ptr, lsize);
|
|
ptr += p->linesize[0];
|
|
}
|
|
|
|
pkt->flags |= AV_PKT_FLAG_KEY;
|
|
*got_packet = 1;
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int xwd_encode_close(AVCodecContext *avctx)
|
|
{
|
|
av_freep(&avctx->coded_frame);
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_xwd_encoder = {
|
|
.name = "xwd",
|
|
.long_name = NULL_IF_CONFIG_SMALL("XWD (X Window Dump) image"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_XWD,
|
|
.init = xwd_encode_init,
|
|
.encode2 = xwd_encode_frame,
|
|
.close = xwd_encode_close,
|
|
.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_BGRA,
|
|
AV_PIX_FMT_RGBA,
|
|
AV_PIX_FMT_ARGB,
|
|
AV_PIX_FMT_ABGR,
|
|
AV_PIX_FMT_RGB24,
|
|
AV_PIX_FMT_BGR24,
|
|
AV_PIX_FMT_RGB565BE,
|
|
AV_PIX_FMT_RGB565LE,
|
|
AV_PIX_FMT_BGR565BE,
|
|
AV_PIX_FMT_BGR565LE,
|
|
AV_PIX_FMT_RGB555BE,
|
|
AV_PIX_FMT_RGB555LE,
|
|
AV_PIX_FMT_BGR555BE,
|
|
AV_PIX_FMT_BGR555LE,
|
|
AV_PIX_FMT_RGB8,
|
|
AV_PIX_FMT_BGR8,
|
|
AV_PIX_FMT_RGB4_BYTE,
|
|
AV_PIX_FMT_BGR4_BYTE,
|
|
AV_PIX_FMT_PAL8,
|
|
AV_PIX_FMT_MONOWHITE,
|
|
AV_PIX_FMT_NONE },
|
|
};
|