3 * Copyright (c) 2002, 2003 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "bytestream.h"
27 static int pam_encode_frame(AVCodecContext
*avctx
, unsigned char *outbuf
,
28 int buf_size
, void *data
)
30 PNMContext
*s
= avctx
->priv_data
;
32 AVFrame
* const p
= (AVFrame
*)&s
->picture
;
33 int i
, h
, w
, n
, linesize
, depth
, maxval
;
34 const char *tuple_type
;
37 if (buf_size
< avpicture_get_size(avctx
->pix_fmt
, avctx
->width
, avctx
->height
) + 200) {
38 av_log(avctx
, AV_LOG_ERROR
, "encoded frame too large\n");
43 p
->pict_type
= FF_I_TYPE
;
47 s
->bytestream
= outbuf
;
48 s
->bytestream_end
= outbuf
+buf_size
;
52 switch (avctx
->pix_fmt
) {
53 case PIX_FMT_MONOWHITE
:
57 tuple_type
= "BLACKANDWHITE";
63 tuple_type
= "GRAYSCALE";
75 tuple_type
= "RGB_ALPHA";
80 snprintf(s
->bytestream
, s
->bytestream_end
- s
->bytestream
,
81 "P7\nWIDTH %d\nHEIGHT %d\nDEPTH %d\nMAXVAL %d\nTUPLETYPE %s\nENDHDR\n",
82 w
, h
, depth
, maxval
, tuple_type
);
83 s
->bytestream
+= strlen(s
->bytestream
);
86 linesize
= p
->linesize
[0];
88 if (avctx
->pix_fmt
== PIX_FMT_RGB32
) {
92 for (i
= 0; i
< h
; i
++) {
93 for (j
= 0; j
< w
; j
++) {
94 v
= ((uint32_t *)ptr
)[j
];
95 bytestream_put_be24(&s
->bytestream
, v
);
96 *s
->bytestream
++ = v
>> 24;
101 for (i
= 0; i
< h
; i
++) {
102 memcpy(s
->bytestream
, ptr
, n
);
107 return s
->bytestream
- s
->bytestream_start
;
111 AVCodec pam_encoder
= {
118 .pix_fmts
= (const enum PixelFormat
[]){PIX_FMT_RGB24
, PIX_FMT_RGB32
, PIX_FMT_GRAY8
, PIX_FMT_MONOWHITE
, PIX_FMT_NONE
},
119 .long_name
= NULL_IF_CONFIG_SMALL("PAM (Portable AnyMap) image"),