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avcodec: add Radiance HDR image format support

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This commit is contained in:
Paul B Mahol 2022-07-03 23:50:05 +02:00
parent 4136405c86
commit 307ab7fe8a
17 changed files with 521 additions and 3 deletions
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1
Changelog
View File

@ -2,6 +2,7 @@ Entries are sorted chronologically from oldest to youngest within each release,
releases are sorted from youngest to oldest.
version <next>:
- Radiance HDR image support
version 5.1:

2
doc/general_contents.texi
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@ -749,6 +749,8 @@ following image formats are supported:
@tab OpenEXR
@item FITS @tab X @tab X
@tab Flexible Image Transport System
@item HDR @tab X @tab X
@tab Radiance HDR RGBE Image format
@item IMG @tab @tab X
@tab GEM Raster image
@item JPEG @tab X @tab X

3
libavcodec/Makefile
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@ -403,6 +403,8 @@ OBJS-$(CONFIG_HAP_DECODER) += hapdec.o hap.o
OBJS-$(CONFIG_HAP_ENCODER) += hapenc.o hap.o
OBJS-$(CONFIG_HCA_DECODER) += hcadec.o
OBJS-$(CONFIG_HCOM_DECODER) += hcom.o
OBJS-$(CONFIG_HDR_DECODER) += hdrdec.o
OBJS-$(CONFIG_HDR_ENCODER) += hdrenc.o
OBJS-$(CONFIG_HEVC_DECODER) += hevcdec.o hevc_mvs.o \
hevc_cabac.o hevc_refs.o hevcpred.o \
hevcdsp.o hevc_filter.o hevc_data.o \
@ -1142,6 +1144,7 @@ OBJS-$(CONFIG_H261_PARSER) += h261_parser.o
OBJS-$(CONFIG_H263_PARSER) += h263_parser.o
OBJS-$(CONFIG_H264_PARSER) += h264_parser.o h264_sei.o h264data.o
OBJS-$(CONFIG_HEVC_PARSER) += hevc_parser.o hevc_data.o
OBJS-$(CONFIG_HDR_PARSER) += hdr_parser.o
OBJS-$(CONFIG_IPU_PARSER) += ipu_parser.o
OBJS-$(CONFIG_JPEG2000_PARSER) += jpeg2000_parser.o
OBJS-$(CONFIG_MJPEG_PARSER) += mjpeg_parser.o

2
libavcodec/allcodecs.c
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@ -469,6 +469,8 @@ extern const FFCodec ff_gsm_decoder;
extern const FFCodec ff_gsm_ms_decoder;
extern const FFCodec ff_hca_decoder;
extern const FFCodec ff_hcom_decoder;
extern const FFCodec ff_hdr_encoder;
extern const FFCodec ff_hdr_decoder;
extern const FFCodec ff_iac_decoder;
extern const FFCodec ff_ilbc_decoder;
extern const FFCodec ff_imc_decoder;

7
libavcodec/codec_desc.c
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@ -1893,6 +1893,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
.long_name = NULL_IF_CONFIG_SMALL("PHM (Portable HalfFloatMap) image"),
.props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSLESS,
},
{
.id = AV_CODEC_ID_RADIANCE_HDR,
.type = AVMEDIA_TYPE_VIDEO,
.name = "hdr",
.long_name = NULL_IF_CONFIG_SMALL("HDR (Radiance RGBE format) image"),
.props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
},
/* various PCM "codecs" */
{

1
libavcodec/codec_id.h
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@ -312,6 +312,7 @@ enum AVCodecID {
AV_CODEC_ID_JPEGXL,
AV_CODEC_ID_QOI,
AV_CODEC_ID_PHM,
AV_CODEC_ID_RADIANCE_HDR,
/* various PCM "codecs" */
AV_CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs

79
libavcodec/hdr_parser.c Normal file
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@ -0,0 +1,79 @@
/*
* Radiance HDR parser
* Copyright (c) 2022 Paul B Mahol
*
* 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
*/
/**
* @file
* Radiance HDR parser
*/
#include "libavutil/intreadwrite.h"
#include "parser.h"
typedef struct HDRParseContext {
ParseContext pc;
} HDRParseContext;
static int hdr_parse(AVCodecParserContext *s, AVCodecContext *avctx,
const uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size)
{
HDRParseContext *ipc = s->priv_data;
uint64_t state = ipc->pc.state64;
int next = END_NOT_FOUND, i = 0;
*poutbuf_size = 0;
*poutbuf = NULL;
if (s->flags & PARSER_FLAG_COMPLETE_FRAMES) {
next = buf_size;
} else {
for (; i < buf_size; i++) {
state = (state << 8) | buf[i];
if (state == AV_RB64("ADIANCE\n") && (i > 10 || ipc->pc.index > 10)) {
next = i - 10;
break;
}
}
ipc->pc.state64 = state;
if (ff_combine_frame(&ipc->pc, next, &buf, &buf_size) < 0) {
*poutbuf = NULL;
*poutbuf_size = 0;
return buf_size;
}
}
*poutbuf = buf;
*poutbuf_size = buf_size;
s->pict_type = AV_PICTURE_TYPE_I;
s->key_frame = 1;
s->duration = 1;
return next;
}
const AVCodecParser ff_hdr_parser = {
.codec_ids = { AV_CODEC_ID_RADIANCE_HDR },
.priv_data_size = sizeof(HDRParseContext),
.parser_parse = hdr_parse,
.parser_close = ff_parse_close,
};

222
libavcodec/hdrdec.c Normal file
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@ -0,0 +1,222 @@
/*
* Radiance HDR image format
*
* 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 <stdlib.h>
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "internal.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "thread.h"
#define MINELEN 8
#define MAXELEN 0x7fff
static int hdr_get_line(GetByteContext *gb, uint8_t *buffer, int size)
{
int n = 0, c;
memset(buffer, 0, size);
do {
c = bytestream2_get_byte(gb);
if (n < size - 1)
buffer[n++] = c;
} while (bytestream2_get_bytes_left(gb) > 0 && c != '\n');
return 0;
}
static float convert(int expo, int val)
{
if (expo == -128) {
return 0.f;
} else {
const float v = val / 256.f;
return ldexpf(v, expo);
}
}
static int decompress(uint8_t *scanline, int w, GetByteContext *gb, const uint8_t *start)
{
int rshift = 0;
while (w > 0) {
scanline[0] = bytestream2_get_byte(gb);
scanline[1] = bytestream2_get_byte(gb);
scanline[2] = bytestream2_get_byte(gb);
scanline[3] = bytestream2_get_byte(gb);
if (scanline[0] == 1 &&
scanline[1] == 1 &&
scanline[2] == 1) {
int run = scanline[3];
for (int i = run << rshift; i > 0 && w > 0 && scanline >= start + 4; i--) {
memcpy(scanline, scanline - 4, 4);
scanline += 4;
}
w -= run << rshift;
rshift += 8;
if (rshift > 16)
break;
} else {
scanline += 4;
w--;
rshift = 0;
}
}
return 1;
}
static int hdr_decode_frame(AVCodecContext *avctx, AVFrame *p,
int *got_frame, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int ret, buf_size = avpkt->size;
int width = 0, height = 0;
GetByteContext gb;
uint8_t line[512];
float sar;
bytestream2_init(&gb, buf, buf_size);
hdr_get_line(&gb, line, sizeof(line));
if (memcmp("#?RADIANCE\n", line, 11))
return AVERROR_INVALIDDATA;
do {
hdr_get_line(&gb, line, sizeof(line));
if (sscanf(line, "PIXASPECT=%f\n", &sar) == 1)
avctx->sample_aspect_ratio = p->sample_aspect_ratio = av_inv_q(av_d2q(sar, 4096));
} while (line[0] != '\n');
hdr_get_line(&gb, line, sizeof(line));
if (sscanf(line, "-Y %d +X %d\n", &height, &width) == 2) {
;
} else if (sscanf(line, "+Y %d +X %d\n", &height, &width) == 2) {
;
} else if (sscanf(line, "-Y %d -X %d\n", &height, &width) == 2) {
;
} else if (sscanf(line, "+Y %d -X %d\n", &height, &width) == 2) {
;
} else if (sscanf(line, "-X %d +Y %d\n", &width, &height) == 2) {
;
} else if (sscanf(line, "+X %d +Y %d\n", &width, &height) == 2) {
;
} else if (sscanf(line, "-X %d -Y %d\n", &width, &height) == 2) {
;
} else if (sscanf(line, "+X %d -Y %d\n", &width, &height) == 2) {
;
}
if ((ret = ff_set_dimensions(avctx, width, height)) < 0)
return ret;
avctx->pix_fmt = AV_PIX_FMT_GBRPF32;
if ((ret = ff_thread_get_buffer(avctx, p, 0)) < 0)
return ret;
for (int y = 0; y < height; y++) {
float *dst_r = (float *)(p->data[2] + y * p->linesize[2]);
float *dst_g = (float *)(p->data[0] + y * p->linesize[0]);
float *dst_b = (float *)(p->data[1] + y * p->linesize[1]);
uint8_t *scanline = p->data[0] + y * p->linesize[0];
int i;
if (width < MINELEN || width > MAXELEN) {
decompress(scanline, width, &gb, scanline);
goto convert;
}
i = bytestream2_peek_byte(&gb);
if (i != 2) {
decompress(scanline, width, &gb, scanline);
goto convert;
}
bytestream2_skip(&gb, 1);
scanline[1] = bytestream2_get_byte(&gb);
scanline[2] = bytestream2_get_byte(&gb);
i = bytestream2_get_byte(&gb);
if (scanline[1] != 2 || scanline[2] & 128) {
scanline[0] = 2;
scanline[3] = i;
decompress(scanline + 4, width - 1, &gb, scanline);
goto convert;
}
for (int i = 0; i < 4; i++) {
uint8_t *scanline = p->data[0] + y * p->linesize[0] + i;
for (int j = 0; j < width * 4 && bytestream2_get_bytes_left(&gb) > 0;) {
int run = bytestream2_get_byte(&gb);
if (run > 128) {
uint8_t val = bytestream2_get_byte(&gb);
run &= 127;
while (run--) {
if (j >= width * 4)
break;
scanline[j] = val;
j += 4;
}
} else if (run > 0) {
while (run--) {
if (j >= width * 4)
break;
scanline[j] = bytestream2_get_byte(&gb);
j += 4;
}
}
}
}
convert:
for (int x = 0; x < width; x++) {
uint8_t rgbe[4];
int expo;
memcpy(rgbe, p->data[0] + y * p->linesize[0] + x * 4, 4);
expo = rgbe[3] - 128;
dst_r[x] = convert(expo, rgbe[0]);
dst_b[x] = convert(expo, rgbe[2]);
dst_g[x] = convert(expo, rgbe[1]);
}
}
p->key_frame = 1;
p->pict_type = AV_PICTURE_TYPE_I;
*got_frame = 1;
return buf_size;
}
const FFCodec ff_hdr_decoder = {
.p.name = "hdr",
.p.long_name = NULL_IF_CONFIG_SMALL("HDR (Radiance RGBE format) image"),
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_RADIANCE_HDR,
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
FF_CODEC_DECODE_CB(hdr_decode_frame),
};

189
libavcodec/hdrenc.c Normal file
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@ -0,0 +1,189 @@
/*
* Radiance HDR image format
*
* 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/imgutils.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "encode.h"
typedef struct HDREncContext {
uint8_t *scanline;
} HDREncContext;
static av_cold int hdr_encode_init(AVCodecContext *avctx)
{
HDREncContext *s = avctx->priv_data;
s->scanline = av_calloc(avctx->width * 4, sizeof(*s->scanline));
if (!s->scanline)
return AVERROR(ENOMEM);
return 0;
}
static av_cold int hdr_encode_close(AVCodecContext *avctx)
{
HDREncContext *s = avctx->priv_data;
av_freep(&s->scanline);
return 0;
}
static void bytestream_put_str(uint8_t **buf, const char *const line)
{
bytestream_put_buffer(buf, line, strlen(line));
}
static void float2rgbe(uint8_t *rgbe, float red, float green, float blue)
{
float v;
int e;
v = FFMAX3(red, green, blue);
if (v < 1e-32f) {
rgbe[0] = rgbe[1] = rgbe[2] = rgbe[3] = 0;
} else {
v = frexpf(v, &e) * 256.f / v;
rgbe[0] = av_clip_uint8(red * v);
rgbe[1] = av_clip_uint8(green * v);
rgbe[2] = av_clip_uint8(blue * v);
rgbe[3] = av_clip_uint8(e + 128);
}
}
static void rle(uint8_t **buffer, const uint8_t *data, int width)
{
#define MIN_RLE 4
int cur = 0;
while (cur < width) {
int run_count = 0, old_run_count = 0;
int beg_run = cur;
uint8_t buf[2];
while (run_count < MIN_RLE && beg_run < width) {
beg_run += run_count;
old_run_count = run_count;
run_count = 1;
while ((beg_run + run_count < width) && (run_count < 127) &&
(data[beg_run * 4] == data[(beg_run + run_count) * 4]))
run_count++;
}
if ((old_run_count > 1) && (old_run_count == beg_run - cur)) {
buf[0] = 128 + old_run_count;
buf[1] = data[cur * 4];
bytestream_put_buffer(buffer, buf, sizeof(buf));
cur = beg_run;
}
while (cur < beg_run) {
int nonrun_count = FFMIN(128, beg_run - cur);
buf[0] = nonrun_count;
bytestream_put_byte(buffer, buf[0]);
for (int n = 0; n < nonrun_count; n++)
bytestream_put_byte(buffer, data[(cur + n) * 4]);
cur += nonrun_count;
}
if (run_count >= MIN_RLE) {
buf[0] = 128 + run_count;
buf[1] = data[beg_run * 4];
bytestream_put_buffer(buffer, buf, sizeof(buf));
cur += run_count;
}
}
}
static int hdr_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *frame, int *got_packet)
{
HDREncContext *s = avctx->priv_data;
int64_t packet_size;
uint8_t *buf;
int ret;
packet_size = avctx->width * avctx->height * 4LL + 1024LL;
if ((ret = ff_get_encode_buffer(avctx, pkt, packet_size, 0)) < 0)
return ret;
buf = pkt->data;
bytestream_put_str(&buf, "#?RADIANCE\n");
bytestream_put_str(&buf, "SOFTWARE=lavc\n");
ret = snprintf(buf, 32, "PIXASPECT=%f\n", av_q2d(av_inv_q(avctx->sample_aspect_ratio)));
if (ret > 0)
buf += ret;
bytestream_put_str(&buf, "FORMAT=32-bit_rle_rgbe\n\n");
ret = snprintf(buf, 32, "-Y %d +X %d\n", avctx->height, avctx->width);
if (ret > 0)
buf += ret;
for (int y = 0; y < avctx->height; y++) {
const float *red = (const float *)(frame->data[2] + y * frame->linesize[2]);
const float *green = (const float *)(frame->data[0] + y * frame->linesize[0]);
const float *blue = (const float *)(frame->data[1] + y * frame->linesize[1]);
if (avctx->width < 8 || avctx->width > 0x7fff) {
for (int x = 0; x < avctx->width; x++) {
float2rgbe(buf, red[x], green[x], blue[x]);
buf += 4;
}
} else {
bytestream_put_byte(&buf, 2);
bytestream_put_byte(&buf, 2);
bytestream_put_byte(&buf, avctx->width >> 8);
bytestream_put_byte(&buf, avctx->width & 0xFF);
for (int x = 0; x < avctx->width; x++)
float2rgbe(s->scanline + 4 * x, red[x], green[x], blue[x]);
for (int p = 0; p < 4; p++)
rle(&buf, s->scanline + p, avctx->width);
}
}
pkt->flags |= AV_PKT_FLAG_KEY;
av_shrink_packet(pkt, buf - pkt->data);
*got_packet = 1;
return 0;
}
const FFCodec ff_hdr_encoder = {
.p.name = "hdr",
.p.long_name = NULL_IF_CONFIG_SMALL("HDR (Radiance RGBE format) image"),
.priv_data_size = sizeof(HDREncContext),
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_RADIANCE_HDR,
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
.init = hdr_encode_init,
FF_CODEC_ENCODE_CB(hdr_encode_frame),
.close = hdr_encode_close,
.p.pix_fmts = (const enum AVPixelFormat[]){
AV_PIX_FMT_GBRPF32,
AV_PIX_FMT_NONE
},
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
};

1
libavcodec/parsers.c
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@ -50,6 +50,7 @@ extern const AVCodecParser ff_h261_parser;
extern const AVCodecParser ff_h263_parser;
extern const AVCodecParser ff_h264_parser;
extern const AVCodecParser ff_hevc_parser;
extern const AVCodecParser ff_hdr_parser;
extern const AVCodecParser ff_ipu_parser;
extern const AVCodecParser ff_jpeg2000_parser;
extern const AVCodecParser ff_mjpeg_parser;

2
libavcodec/version.h
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@ -29,7 +29,7 @@
#include "version_major.h"
#define LIBAVCODEC_VERSION_MINOR 38
#define LIBAVCODEC_VERSION_MINOR 39
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \

1
libavformat/Makefile
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@ -273,6 +273,7 @@ OBJS-$(CONFIG_IMAGE_DPX_PIPE_DEMUXER) += img2dec.o img2.o
OBJS-$(CONFIG_IMAGE_EXR_PIPE_DEMUXER) += img2dec.o img2.o
OBJS-$(CONFIG_IMAGE_GEM_PIPE_DEMUXER) += img2dec.o img2.o
OBJS-$(CONFIG_IMAGE_GIF_PIPE_DEMUXER) += img2dec.o img2.o
OBJS-$(CONFIG_IMAGE_HDR_PIPE_DEMUXER) += img2dec.o img2.o
OBJS-$(CONFIG_IMAGE_J2K_PIPE_DEMUXER) += img2dec.o img2.o
OBJS-$(CONFIG_IMAGE_JPEG_PIPE_DEMUXER) += img2dec.o img2.o
OBJS-$(CONFIG_IMAGE_JPEGLS_PIPE_DEMUXER) += img2dec.o img2.o

1
libavformat/allformats.c
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@ -508,6 +508,7 @@ extern const AVInputFormat ff_image_dpx_pipe_demuxer;
extern const AVInputFormat ff_image_exr_pipe_demuxer;
extern const AVInputFormat ff_image_gem_pipe_demuxer;
extern const AVInputFormat ff_image_gif_pipe_demuxer;
extern const AVInputFormat ff_image_hdr_pipe_demuxer;
extern const AVInputFormat ff_image_j2k_pipe_demuxer;
extern const AVInputFormat ff_image_jpeg_pipe_demuxer;
extern const AVInputFormat ff_image_jpegls_pipe_demuxer;

1
libavformat/img2.c
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@ -91,6 +91,7 @@ const IdStrMap ff_img_tags[] = {
{ AV_CODEC_ID_VBN, "vbn" },
{ AV_CODEC_ID_JPEGXL, "jxl" },
{ AV_CODEC_ID_QOI, "qoi" },
{ AV_CODEC_ID_RADIANCE_HDR, "hdr" },
{ AV_CODEC_ID_NONE, NULL }
};

8
libavformat/img2dec.c
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@ -1070,6 +1070,13 @@ static int pam_probe(const AVProbeData *p)
return pnm_magic_check(p, 7) ? pnm_probe(p) : 0;
}
static int hdr_probe(const AVProbeData *p)
{
if (!memcmp(p->buf, "#?RADIANCE\n", 11))
return AVPROBE_SCORE_MAX;
return 0;
}
static int xbm_probe(const AVProbeData *p)
{
if (!memcmp(p->buf, "/* XBM X10 format */", 20))
@ -1221,6 +1228,7 @@ IMAGEAUTO_DEMUXER(dpx, DPX)
IMAGEAUTO_DEMUXER(exr, EXR)
IMAGEAUTO_DEMUXER(gem, GEM)
IMAGEAUTO_DEMUXER(gif, GIF)
IMAGEAUTO_DEMUXER(hdr, RADIANCE_HDR)
IMAGEAUTO_DEMUXER_EXT(j2k, JPEG2000, J2K)
IMAGEAUTO_DEMUXER_EXT(jpeg, MJPEG, JPEG)
IMAGEAUTO_DEMUXER(jpegls, JPEGLS)

2
libavformat/img2enc.c
View File

@ -273,7 +273,7 @@ const AVOutputFormat ff_image2_muxer = {
.long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
.extensions = "bmp,dpx,exr,jls,jpeg,jpg,jxl,ljpg,pam,pbm,pcx,pfm,pgm,pgmyuv,phm,"
"png,ppm,sgi,tga,tif,tiff,jp2,j2c,j2k,xwd,sun,ras,rs,im1,im8,"
"im24,sunras,vbn,xbm,xface,pix,y,avif,qoi",
"im24,sunras,vbn,xbm,xface,pix,y,avif,qoi,hdr",
.priv_data_size = sizeof(VideoMuxData),
.video_codec = AV_CODEC_ID_MJPEG,
.write_header = write_header,

2
libavformat/version.h
View File

@ -31,7 +31,7 @@
#include "version_major.h"
#define LIBAVFORMAT_VERSION_MINOR 28
#define LIBAVFORMAT_VERSION_MINOR 29
#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \