mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
cd9dd03006
PFM (aka Portable FloatMap) encodes its scanlines from bottom-to-top, not from top-to-bottom, unlike other NetPBM formats. Without this patch, FFmpeg ignores this exception and decodes/encodes PFM images mirrored vertically from their proper orientation. For reference, see the NetPBM tool pfmtopam, which encodes a .pam from a .pfm, using the correct orientation (and which FFmpeg reads correctly). Also compare ffplay to magick display, which shows the correct orientation as well. See: http://www.pauldebevec.com/Research/HDR/PFM/ and see: https://netpbm.sourceforge.net/doc/pfm.html for descriptions of this image format. Signed-off-by: Leo Izen <leo.izen@gmail.com> Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: James Almer <jamrial@gmail.com>
321 lines
11 KiB
C
321 lines
11 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 "libavutil/float2half.h"
|
|
#include "avcodec.h"
|
|
#include "codec_internal.h"
|
|
#include "encode.h"
|
|
|
|
typedef struct PHMEncContext {
|
|
Float2HalfTables f2h_tables;
|
|
} PHMEncContext;
|
|
|
|
static int pnm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
|
|
const AVFrame *p, int *got_packet)
|
|
{
|
|
PHMEncContext *s = avctx->priv_data;
|
|
uint8_t *bytestream, *bytestream_start, *bytestream_end;
|
|
int i, h, h1, c, n, linesize, ret;
|
|
int size = av_image_get_buffer_size(avctx->pix_fmt,
|
|
avctx->width, avctx->height, 1);
|
|
|
|
if (size < 0)
|
|
return size;
|
|
|
|
if ((ret = ff_get_encode_buffer(avctx, pkt, size + 200U, 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_GBRPF32BE:
|
|
case AV_PIX_FMT_GBRPF32LE:
|
|
if (avctx->codec_id == AV_CODEC_ID_PFM) {
|
|
c = 'F';
|
|
n = avctx->width * 4;
|
|
} else {
|
|
c = 'H';
|
|
n = avctx->width * 2;
|
|
}
|
|
break;
|
|
case AV_PIX_FMT_GRAYF32BE:
|
|
case AV_PIX_FMT_GRAYF32LE:
|
|
if (avctx->codec_id == AV_CODEC_ID_PFM) {
|
|
c = 'f';
|
|
n = avctx->width * 4;
|
|
} else {
|
|
c = 'h';
|
|
n = avctx->width * 2;
|
|
}
|
|
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_GBRPF32LE ||
|
|
avctx->pix_fmt == AV_PIX_FMT_GRAYF32LE ||
|
|
avctx->pix_fmt == AV_PIX_FMT_GBRPF32BE ||
|
|
avctx->pix_fmt == AV_PIX_FMT_GRAYF32BE)
|
|
snprintf(bytestream, bytestream_end - bytestream,
|
|
"%f\n", (avctx->pix_fmt == AV_PIX_FMT_GBRPF32BE ||
|
|
avctx->pix_fmt == AV_PIX_FMT_GRAYF32BE) ? 1.f: -1.f);
|
|
bytestream += strlen(bytestream);
|
|
if (avctx->pix_fmt != AV_PIX_FMT_MONOWHITE &&
|
|
avctx->pix_fmt != AV_PIX_FMT_GBRPF32LE &&
|
|
avctx->pix_fmt != AV_PIX_FMT_GRAYF32LE &&
|
|
avctx->pix_fmt != AV_PIX_FMT_GBRPF32BE &&
|
|
avctx->pix_fmt != AV_PIX_FMT_GRAYF32BE) {
|
|
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_GBRPF32LE ||
|
|
avctx->pix_fmt == AV_PIX_FMT_GBRPF32BE) && c == 'F') {
|
|
/* PFM is encoded from bottom to top */
|
|
const float *r = (const float *)(p->data[2] + p->linesize[2] * (avctx->height - 1));
|
|
const float *g = (const float *)(p->data[0] + p->linesize[0] * (avctx->height - 1));
|
|
const float *b = (const float *)(p->data[1] + p->linesize[1] * (avctx->height - 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 if ((avctx->pix_fmt == AV_PIX_FMT_GRAYF32LE ||
|
|
avctx->pix_fmt == AV_PIX_FMT_GRAYF32BE) && c == 'f') {
|
|
/* PFM is encoded from bottom to top */
|
|
const float *g = (const float *)(p->data[0] + p->linesize[0] * (avctx->height - 1));
|
|
|
|
for (int i = 0; i < avctx->height; i++) {
|
|
for (int j = 0; j < avctx->width; j++) {
|
|
AV_WN32(bytestream, av_float2int(g[j]));
|
|
bytestream += 4;
|
|
}
|
|
|
|
g -= p->linesize[0] / 4;
|
|
}
|
|
} else if (avctx->pix_fmt == AV_PIX_FMT_GBRPF32 && c == 'H') {
|
|
const float *r = (const float *)p->data[2];
|
|
const float *g = (const float *)p->data[0];
|
|
const float *b = (const float *)p->data[1];
|
|
|
|
for (int i = 0; i < avctx->height; i++) {
|
|
for (int j = 0; j < avctx->width; j++) {
|
|
AV_WN16(bytestream + 0, float2half(av_float2int(r[j]), &s->f2h_tables));
|
|
AV_WN16(bytestream + 2, float2half(av_float2int(g[j]), &s->f2h_tables));
|
|
AV_WN16(bytestream + 4, float2half(av_float2int(b[j]), &s->f2h_tables));
|
|
bytestream += 6;
|
|
}
|
|
|
|
r += p->linesize[2] / 4;
|
|
g += p->linesize[0] / 4;
|
|
b += p->linesize[1] / 4;
|
|
}
|
|
} else if (avctx->pix_fmt == AV_PIX_FMT_GRAYF32 && c == 'h') {
|
|
const float *g = (const float *)p->data[0];
|
|
|
|
for (int i = 0; i < avctx->height; i++) {
|
|
for (int j = 0; j < avctx->width; j++) {
|
|
AV_WN16(bytestream, float2half(av_float2int(g[j]), &s->f2h_tables));
|
|
bytestream += 2;
|
|
}
|
|
|
|
g += p->linesize[0] / 4;
|
|
}
|
|
} else {
|
|
const uint8_t *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) {
|
|
const uint8_t *ptr1 = p->data[1], *ptr2 = p->data[2];
|
|
h >>= 1;
|
|
n >>= 1;
|
|
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",
|
|
CODEC_LONG_NAME("PGM (Portable GrayMap) image"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_PGM,
|
|
.p.capabilities = AV_CODEC_CAP_DR1,
|
|
FF_CODEC_ENCODE_CB(pnm_encode_frame),
|
|
.p.pix_fmts = (const enum AVPixelFormat[]){
|
|
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE
|
|
},
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_PGMYUV_ENCODER
|
|
const FFCodec ff_pgmyuv_encoder = {
|
|
.p.name = "pgmyuv",
|
|
CODEC_LONG_NAME("PGMYUV (Portable GrayMap YUV) image"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_PGMYUV,
|
|
.p.capabilities = AV_CODEC_CAP_DR1,
|
|
FF_CODEC_ENCODE_CB(pnm_encode_frame),
|
|
.p.pix_fmts = (const enum AVPixelFormat[]){
|
|
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_NONE
|
|
},
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_PPM_ENCODER
|
|
const FFCodec ff_ppm_encoder = {
|
|
.p.name = "ppm",
|
|
CODEC_LONG_NAME("PPM (Portable PixelMap) image"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_PPM,
|
|
.p.capabilities = AV_CODEC_CAP_DR1,
|
|
FF_CODEC_ENCODE_CB(pnm_encode_frame),
|
|
.p.pix_fmts = (const enum AVPixelFormat[]){
|
|
AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB48BE, AV_PIX_FMT_NONE
|
|
},
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_PBM_ENCODER
|
|
const FFCodec ff_pbm_encoder = {
|
|
.p.name = "pbm",
|
|
CODEC_LONG_NAME("PBM (Portable BitMap) image"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_PBM,
|
|
.p.capabilities = AV_CODEC_CAP_DR1,
|
|
FF_CODEC_ENCODE_CB(pnm_encode_frame),
|
|
.p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_MONOWHITE,
|
|
AV_PIX_FMT_NONE },
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_PFM_ENCODER
|
|
const FFCodec ff_pfm_encoder = {
|
|
.p.name = "pfm",
|
|
CODEC_LONG_NAME("PFM (Portable FloatMap) image"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_PFM,
|
|
.p.capabilities = AV_CODEC_CAP_DR1,
|
|
FF_CODEC_ENCODE_CB(pnm_encode_frame),
|
|
.p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_GBRPF32LE,
|
|
AV_PIX_FMT_GRAYF32LE,
|
|
AV_PIX_FMT_GBRPF32BE,
|
|
AV_PIX_FMT_GRAYF32BE,
|
|
AV_PIX_FMT_NONE },
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_PHM_ENCODER
|
|
static av_cold int phm_enc_init(AVCodecContext *avctx)
|
|
{
|
|
PHMEncContext *s = avctx->priv_data;
|
|
|
|
ff_init_float2half_tables(&s->f2h_tables);
|
|
|
|
return 0;
|
|
}
|
|
|
|
const FFCodec ff_phm_encoder = {
|
|
.p.name = "phm",
|
|
CODEC_LONG_NAME("PHM (Portable HalfFloatMap) image"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_PHM,
|
|
.p.capabilities = AV_CODEC_CAP_DR1,
|
|
.priv_data_size = sizeof(PHMEncContext),
|
|
.init = phm_enc_init,
|
|
FF_CODEC_ENCODE_CB(pnm_encode_frame),
|
|
.p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_GBRPF32,
|
|
AV_PIX_FMT_GRAYF32,
|
|
AV_PIX_FMT_NONE },
|
|
};
|
|
#endif
|