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/*
* PAM image format
* Copyright (c) 2002, 2003 Fabrice Bellard
*
* 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
*/
#include "libavutil/avassert.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "encode.h"
static int pam_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *p, int *got_packet)
{
int i, h, w, n, linesize, depth, maxval, ret, header_size;
uint8_t *bytestream;
const uint8_t *ptr;
const char *tuple_type;
char header[100];
h = avctx->height;
w = avctx->width;
switch (avctx->pix_fmt) {
case AV_PIX_FMT_MONOBLACK:
n = w;
depth = 1;
maxval = 1;
tuple_type = "BLACKANDWHITE";
break;
case AV_PIX_FMT_GRAY8:
n = w;
depth = 1;
maxval = 255;
tuple_type = "GRAYSCALE";
break;
case AV_PIX_FMT_GRAY16BE:
n = w * 2;
depth = 1;
maxval = 0xFFFF;
tuple_type = "GRAYSCALE";
break;
case AV_PIX_FMT_GRAY8A:
n = w * 2;
depth = 2;
maxval = 255;
tuple_type = "GRAYSCALE_ALPHA";
break;
case AV_PIX_FMT_YA16BE:
n = w * 4;
depth = 2;
maxval = 0xFFFF;
tuple_type = "GRAYSCALE_ALPHA";
break;
case AV_PIX_FMT_RGB24:
n = w * 3;
depth = 3;
maxval = 255;
tuple_type = "RGB";
break;
case AV_PIX_FMT_RGBA:
n = w * 4;
depth = 4;
maxval = 255;
tuple_type = "RGB_ALPHA";
break;
case AV_PIX_FMT_RGB48BE:
n = w * 6;
depth = 3;
maxval = 0xFFFF;
tuple_type = "RGB";
break;
case AV_PIX_FMT_RGBA64BE:
n = w * 8;
depth = 4;
maxval = 0xFFFF;
tuple_type = "RGB_ALPHA";
break;
default:
return -1;
}
header_size = snprintf(header, sizeof(header),
"P7\nWIDTH %d\nHEIGHT %d\nDEPTH %d\nMAXVAL %d\nTUPLTYPE %s\nENDHDR\n",
w, h, depth, maxval, tuple_type);
av_assert1(header_size < sizeof(header));
if ((ret = ff_get_encode_buffer(avctx, pkt, n*h + header_size, 0)) < 0)
return ret;
bytestream = pkt->data;
memcpy(bytestream, header, header_size);
bytestream += header_size;
ptr = p->data[0];
linesize = p->linesize[0];
if (avctx->pix_fmt == AV_PIX_FMT_MONOBLACK){
int j;
for (i = 0; i < h; i++) {
for (j = 0; j < w; j++)
*bytestream++ = ptr[j >> 3] >> (7 - j & 7) & 1;
ptr += linesize;
}
} else {
for (i = 0; i < h; i++) {
memcpy(bytestream, ptr, n);
bytestream += n;
ptr += linesize;
}
}
*got_packet = 1;
return 0;
}
const FFCodec ff_pam_encoder = {
.p.name = "pam",
CODEC_LONG_NAME("PAM (Portable AnyMap) image"),
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_PAM,
.p.capabilities = AV_CODEC_CAP_DR1,
FF_CODEC_ENCODE_CB(pam_encode_frame),
.p.pix_fmts = (const enum AVPixelFormat[]){
AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA,
AV_PIX_FMT_RGB48BE, AV_PIX_FMT_RGBA64BE,
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A,
AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_YA16BE,
AV_PIX_FMT_MONOBLACK, AV_PIX_FMT_NONE
},
};
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