mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-10-20 15:13:26 +00:00
20f9727018
Up until now, codec.h contains both public and private parts of AVCodec. This exposes the internals of AVCodec to users and leads them into the temptation of actually using them and forces us to forward-declare structures and types that users can't use at all. This commit changes this by adding a new structure FFCodec to codec_internal.h that extends AVCodec, i.e. contains the public AVCodec as first member; the private fields of AVCodec are moved to this structure, leaving codec.h clean. Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
225 lines
7.2 KiB
C
225 lines
7.2 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 "config_components.h"
|
|
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "avcodec.h"
|
|
#include "codec_internal.h"
|
|
#include "encode.h"
|
|
|
|
static int pnm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
|
|
const AVFrame *p, int *got_packet)
|
|
{
|
|
uint8_t *bytestream, *bytestream_start, *bytestream_end;
|
|
int i, h, h1, c, n, linesize, ret;
|
|
uint8_t *ptr, *ptr1, *ptr2;
|
|
int size = av_image_get_buffer_size(avctx->pix_fmt,
|
|
avctx->width, avctx->height, 1);
|
|
|
|
if ((ret = ff_get_encode_buffer(avctx, pkt, size + 200, 0)) < 0)
|
|
return ret;
|
|
|
|
bytestream_start =
|
|
bytestream = pkt->data;
|
|
bytestream_end = pkt->data + pkt->size;
|
|
|
|
h = avctx->height;
|
|
h1 = h;
|
|
switch (avctx->pix_fmt) {
|
|
case AV_PIX_FMT_MONOWHITE:
|
|
c = '4';
|
|
n = (avctx->width + 7) >> 3;
|
|
break;
|
|
case AV_PIX_FMT_GRAY8:
|
|
c = '5';
|
|
n = avctx->width;
|
|
break;
|
|
case AV_PIX_FMT_GRAY16BE:
|
|
c = '5';
|
|
n = avctx->width * 2;
|
|
break;
|
|
case AV_PIX_FMT_RGB24:
|
|
c = '6';
|
|
n = avctx->width * 3;
|
|
break;
|
|
case AV_PIX_FMT_RGB48BE:
|
|
c = '6';
|
|
n = avctx->width * 6;
|
|
break;
|
|
case AV_PIX_FMT_YUV420P:
|
|
if (avctx->width & 1 || avctx->height & 1) {
|
|
av_log(avctx, AV_LOG_ERROR, "pgmyuv needs even width and height\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
c = '5';
|
|
n = avctx->width;
|
|
h1 = (h * 3) / 2;
|
|
break;
|
|
case AV_PIX_FMT_YUV420P16BE:
|
|
c = '5';
|
|
n = avctx->width * 2;
|
|
h1 = (h * 3) / 2;
|
|
break;
|
|
case AV_PIX_FMT_GBRPF32:
|
|
c = 'F';
|
|
n = avctx->width * 4;
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
snprintf(bytestream, bytestream_end - bytestream,
|
|
"P%c\n%d %d\n", c, avctx->width, h1);
|
|
bytestream += strlen(bytestream);
|
|
if (avctx->pix_fmt == AV_PIX_FMT_GBRPF32)
|
|
snprintf(bytestream, bytestream_end - bytestream,
|
|
"%f\n", avctx->pix_fmt == AV_PIX_FMT_GBRPF32BE ? 1.f: -1.f);
|
|
bytestream += strlen(bytestream);
|
|
if (avctx->pix_fmt != AV_PIX_FMT_MONOWHITE &&
|
|
avctx->pix_fmt != AV_PIX_FMT_GBRPF32) {
|
|
int maxdepth = (1 << av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth) - 1;
|
|
snprintf(bytestream, bytestream_end - bytestream,
|
|
"%d\n", maxdepth);
|
|
bytestream += strlen(bytestream);
|
|
}
|
|
|
|
if (avctx->pix_fmt == AV_PIX_FMT_GBRPF32) {
|
|
float *r = (float *)p->data[2];
|
|
float *g = (float *)p->data[0];
|
|
float *b = (float *)p->data[1];
|
|
|
|
for (int i = 0; i < avctx->height; i++) {
|
|
for (int j = 0; j < avctx->width; j++) {
|
|
AV_WN32(bytestream + 0, av_float2int(r[j]));
|
|
AV_WN32(bytestream + 4, av_float2int(g[j]));
|
|
AV_WN32(bytestream + 8, av_float2int(b[j]));
|
|
bytestream += 12;
|
|
}
|
|
|
|
r += p->linesize[2] / 4;
|
|
g += p->linesize[0] / 4;
|
|
b += p->linesize[1] / 4;
|
|
}
|
|
} else {
|
|
ptr = p->data[0];
|
|
linesize = p->linesize[0];
|
|
for (i = 0; i < h; i++) {
|
|
memcpy(bytestream, ptr, n);
|
|
bytestream += n;
|
|
ptr += linesize;
|
|
}
|
|
}
|
|
|
|
if (avctx->pix_fmt == AV_PIX_FMT_YUV420P || avctx->pix_fmt == AV_PIX_FMT_YUV420P16BE) {
|
|
h >>= 1;
|
|
n >>= 1;
|
|
ptr1 = p->data[1];
|
|
ptr2 = p->data[2];
|
|
for (i = 0; i < h; i++) {
|
|
memcpy(bytestream, ptr1, n);
|
|
bytestream += n;
|
|
memcpy(bytestream, ptr2, n);
|
|
bytestream += n;
|
|
ptr1 += p->linesize[1];
|
|
ptr2 += p->linesize[2];
|
|
}
|
|
}
|
|
av_shrink_packet(pkt, bytestream - bytestream_start);
|
|
*got_packet = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if CONFIG_PGM_ENCODER
|
|
const FFCodec ff_pgm_encoder = {
|
|
.p.name = "pgm",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("PGM (Portable GrayMap) image"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_PGM,
|
|
.p.capabilities = AV_CODEC_CAP_DR1,
|
|
.encode2 = pnm_encode_frame,
|
|
.p.pix_fmts = (const enum AVPixelFormat[]){
|
|
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE
|
|
},
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_PGMYUV_ENCODER
|
|
const FFCodec ff_pgmyuv_encoder = {
|
|
.p.name = "pgmyuv",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("PGMYUV (Portable GrayMap YUV) image"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_PGMYUV,
|
|
.p.capabilities = AV_CODEC_CAP_DR1,
|
|
.encode2 = pnm_encode_frame,
|
|
.p.pix_fmts = (const enum AVPixelFormat[]){
|
|
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_NONE
|
|
},
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_PPM_ENCODER
|
|
const FFCodec ff_ppm_encoder = {
|
|
.p.name = "ppm",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("PPM (Portable PixelMap) image"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_PPM,
|
|
.p.capabilities = AV_CODEC_CAP_DR1,
|
|
.encode2 = pnm_encode_frame,
|
|
.p.pix_fmts = (const enum AVPixelFormat[]){
|
|
AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB48BE, AV_PIX_FMT_NONE
|
|
},
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_PBM_ENCODER
|
|
const FFCodec ff_pbm_encoder = {
|
|
.p.name = "pbm",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("PBM (Portable BitMap) image"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_PBM,
|
|
.p.capabilities = AV_CODEC_CAP_DR1,
|
|
.encode2 = pnm_encode_frame,
|
|
.p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_MONOWHITE,
|
|
AV_PIX_FMT_NONE },
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_PFM_ENCODER
|
|
const FFCodec ff_pfm_encoder = {
|
|
.p.name = "pfm",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("PFM (Portable FloatMap) image"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_PFM,
|
|
.p.capabilities = AV_CODEC_CAP_DR1,
|
|
.encode2 = pnm_encode_frame,
|
|
.p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_GBRPF32,
|
|
AV_PIX_FMT_NONE },
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
|
|
};
|
|
#endif
|