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mirror of https://git.ffmpeg.org/ffmpeg.git synced 2024-12-20 22:41:11 +00:00
ffmpeg/libavcodec/pnmenc.c
Michael Niedermayer 6101e5322f Merge remote-tracking branch 'qatar/master'
* qatar/master:
  rtpdec_asf: Set the no_resync_search option for the chained asf demuxer
  asfdec: Add an option for not searching for the packet markers
  cosmetics: Clean up the tiffenc pix_fmts declaration to match the style of others
  cosmetics: Align codec declarations
  cosmetics: Convert mimic.c to utf-8
  avconv: remove an unused function parameter.
  avconv: remove now pointless variables.
  avconv: drop support for building without libavfilter.
  nellymoserenc: fix crash due to memsetting the wrong area.
  libavformat: Only require first packet to be known for audio/video streams
  avplay: Don't try to scale timestamps if the tb isn't set

Conflicts:
	Changelog
	configure
	ffmpeg.c
	libavcodec/aacenc.c
	libavcodec/bmpenc.c
	libavcodec/dnxhddec.c
	libavcodec/dnxhdenc.c
	libavcodec/ffv1.c
	libavcodec/flacenc.c
	libavcodec/fraps.c
	libavcodec/huffyuv.c
	libavcodec/libopenjpegdec.c
	libavcodec/mpeg12enc.c
	libavcodec/mpeg4videodec.c
	libavcodec/pamenc.c
	libavcodec/pgssubdec.c
	libavcodec/pngenc.c
	libavcodec/qtrleenc.c
	libavcodec/rawdec.c
	libavcodec/sgienc.c
	libavcodec/tiffenc.c
	libavcodec/v210dec.c
	libavcodec/wmv2dec.c
	libavformat/utils.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-04-07 22:41:37 +02:00

178 lines
5.4 KiB
C

/*
* PNM 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 "avcodec.h"
#include "internal.h"
#include "pnm.h"
static int pnm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pict, int *got_packet)
{
PNMContext *s = avctx->priv_data;
AVFrame * const p = &s->picture;
int i, h, h1, c, n, linesize, ret;
uint8_t *ptr, *ptr1, *ptr2;
if ((ret = ff_alloc_packet2(avctx, pkt, avpicture_get_size(avctx->pix_fmt,
avctx->width,
avctx->height) + 200)) < 0)
return ret;
*p = *pict;
p->pict_type = AV_PICTURE_TYPE_I;
p->key_frame = 1;
s->bytestream_start =
s->bytestream = pkt->data;
s->bytestream_end = pkt->data + pkt->size;
h = avctx->height;
h1 = h;
switch (avctx->pix_fmt) {
case PIX_FMT_MONOWHITE:
c = '4';
n = (avctx->width + 7) >> 3;
break;
case PIX_FMT_GRAY8:
c = '5';
n = avctx->width;
break;
case PIX_FMT_GRAY16BE:
c = '5';
n = avctx->width * 2;
break;
case PIX_FMT_RGB24:
c = '6';
n = avctx->width * 3;
break;
case PIX_FMT_RGB48BE:
c = '6';
n = avctx->width * 6;
break;
case PIX_FMT_YUV420P:
if (avctx->width & 1) {
av_log(avctx, AV_LOG_ERROR, "pgmyuv needs even width\n");
return AVERROR(EINVAL);
}
c = '5';
n = avctx->width;
h1 = (h * 3) / 2;
break;
default:
return -1;
}
snprintf(s->bytestream, s->bytestream_end - s->bytestream,
"P%c\n%d %d\n", c, avctx->width, h1);
s->bytestream += strlen(s->bytestream);
if (avctx->pix_fmt != PIX_FMT_MONOWHITE) {
snprintf(s->bytestream, s->bytestream_end - s->bytestream,
"%d\n", (avctx->pix_fmt != PIX_FMT_GRAY16BE && avctx->pix_fmt != PIX_FMT_RGB48BE) ? 255 : 65535);
s->bytestream += strlen(s->bytestream);
}
ptr = p->data[0];
linesize = p->linesize[0];
for (i = 0; i < h; i++) {
memcpy(s->bytestream, ptr, n);
s->bytestream += n;
ptr += linesize;
}
if (avctx->pix_fmt == PIX_FMT_YUV420P) {
h >>= 1;
n >>= 1;
ptr1 = p->data[1];
ptr2 = p->data[2];
for (i = 0; i < h; i++) {
memcpy(s->bytestream, ptr1, n);
s->bytestream += n;
memcpy(s->bytestream, ptr2, n);
s->bytestream += n;
ptr1 += p->linesize[1];
ptr2 += p->linesize[2];
}
}
pkt->size = s->bytestream - s->bytestream_start;
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
return 0;
}
#if CONFIG_PGM_ENCODER
AVCodec ff_pgm_encoder = {
.name = "pgm",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_PGM,
.priv_data_size = sizeof(PNMContext),
.init = ff_pnm_init,
.encode2 = pnm_encode_frame,
.pix_fmts = (const enum PixelFormat[]){
PIX_FMT_GRAY8, PIX_FMT_GRAY16BE, PIX_FMT_NONE
},
.long_name = NULL_IF_CONFIG_SMALL("PGM (Portable GrayMap) image"),
};
#endif
#if CONFIG_PGMYUV_ENCODER
AVCodec ff_pgmyuv_encoder = {
.name = "pgmyuv",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_PGMYUV,
.priv_data_size = sizeof(PNMContext),
.init = ff_pnm_init,
.encode2 = pnm_encode_frame,
.pix_fmts = (const enum PixelFormat[]){ PIX_FMT_YUV420P, PIX_FMT_NONE },
.long_name = NULL_IF_CONFIG_SMALL("PGMYUV (Portable GrayMap YUV) image"),
};
#endif
#if CONFIG_PPM_ENCODER
AVCodec ff_ppm_encoder = {
.name = "ppm",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_PPM,
.priv_data_size = sizeof(PNMContext),
.init = ff_pnm_init,
.encode2 = pnm_encode_frame,
.pix_fmts = (const enum PixelFormat[]){
PIX_FMT_RGB24, PIX_FMT_RGB48BE, PIX_FMT_NONE
},
.long_name = NULL_IF_CONFIG_SMALL("PPM (Portable PixelMap) image"),
};
#endif
#if CONFIG_PBM_ENCODER
AVCodec ff_pbm_encoder = {
.name = "pbm",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_PBM,
.priv_data_size = sizeof(PNMContext),
.init = ff_pnm_init,
.encode2 = pnm_encode_frame,
.pix_fmts = (const enum PixelFormat[]){ PIX_FMT_MONOWHITE,
PIX_FMT_NONE },
.long_name = NULL_IF_CONFIG_SMALL("PBM (Portable BitMap) image"),
};
#endif