* [FFmpeg-devel] [PATCH v19] avformat: add farbfeld muxer and demuxer
@ 2024-07-08 20:01 Marcus B Spencer
2024-07-10 14:03 ` Paul B Mahol
0 siblings, 1 reply; 3+ messages in thread
From: Marcus B Spencer @ 2024-07-08 20:01 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: Marcus B Spencer
farbfeld is an uncompressed image format that is a part of suckless
tools (https://tools.suckless.org).
Its documentation is available at https://tools.suckless.org/farbfeld.
Add support for this image format in avformat.
Signed-off-by: Marcus B Spencer <marcus@marcusspencer.xyz>
---
This patch revision rebases libavformat/version.h to match current git
master.
Changelog | 1 +
doc/general_contents.texi | 4 +
libavformat/Makefile | 2 +
libavformat/allformats.c | 2 +
libavformat/farbfelddec.c | 209 ++++++++++++++++++++++++++++++++++++++
libavformat/farbfeldenc.c | 153 ++++++++++++++++++++++++++++
libavformat/version.h | 4 +-
7 files changed, 373 insertions(+), 2 deletions(-)
create mode 100644 libavformat/farbfelddec.c
create mode 100644 libavformat/farbfeldenc.c
diff --git a/Changelog b/Changelog
index 2d3bd43336..2b382bbfbf 100644
--- a/Changelog
+++ b/Changelog
@@ -16,6 +16,7 @@ version <next>:
- VVC encoding support via libvvenc
- perlin video source
- D3D12VA HEVC encoder
+- farbfeld muxer and demuxer
version 7.0:
- DXV DXT1 encoder
diff --git a/doc/general_contents.texi b/doc/general_contents.texi
index e7cf4f8239..bbc49d3665 100644
--- a/doc/general_contents.texi
+++ b/doc/general_contents.texi
@@ -489,6 +489,8 @@ library:
@item Electronic Arts Multimedia @tab @tab X
@tab Used in various EA games; files have extensions like WVE and UV2.
@item Ensoniq Paris Audio File @tab @tab X
+@item FF @tab X @tab X
+ @tab farbfeld uncompressed image
@item FFM (FFserver live feed) @tab X @tab X
@item Flash (SWF) @tab X @tab X
@item Flash 9 (AVM2) @tab X @tab X
@@ -786,6 +788,8 @@ following image formats are supported:
@tab Digital Picture Exchange
@item EXR @tab @tab X
@tab OpenEXR
+@item FF @tab X @tab X
+ @tab farbfeld uncompressed image
@item FITS @tab X @tab X
@tab Flexible Image Transport System
@item HDR @tab X @tab X
diff --git a/libavformat/Makefile b/libavformat/Makefile
index 7ca68a7036..ab8f8216ff 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -204,6 +204,8 @@ OBJS-$(CONFIG_EA_DEMUXER) += electronicarts.o
OBJS-$(CONFIG_EAC3_DEMUXER) += ac3dec.o rawdec.o
OBJS-$(CONFIG_EAC3_MUXER) += rawenc.o
OBJS-$(CONFIG_EPAF_DEMUXER) += epafdec.o pcm.o
+OBJS-$(CONFIG_FARBFELD_DEMUXER) += farbfelddec.o
+OBJS-$(CONFIG_FARBFELD_MUXER) += farbfeldenc.o
OBJS-$(CONFIG_FFMETADATA_DEMUXER) += ffmetadec.o
OBJS-$(CONFIG_FFMETADATA_MUXER) += ffmetaenc.o
OBJS-$(CONFIG_FIFO_MUXER) += fifo.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index 305fa46532..2cfbf1a648 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -162,6 +162,8 @@ extern const FFInputFormat ff_epaf_demuxer;
extern const FFInputFormat ff_evc_demuxer;
extern const FFOutputFormat ff_evc_muxer;
extern const FFOutputFormat ff_f4v_muxer;
+extern const FFInputFormat ff_farbfeld_demuxer;
+extern const FFOutputFormat ff_farbfeld_muxer;
extern const FFInputFormat ff_ffmetadata_demuxer;
extern const FFOutputFormat ff_ffmetadata_muxer;
extern const FFOutputFormat ff_fifo_muxer;
diff --git a/libavformat/farbfelddec.c b/libavformat/farbfelddec.c
new file mode 100644
index 0000000000..3d2815c771
--- /dev/null
+++ b/libavformat/farbfelddec.c
@@ -0,0 +1,209 @@
+/*
+ * Image format
+ *
+ * Modified by Marcus B Spencer to suit the farbfeld demuxer on 2 July 2024
+ *
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ * Copyright (c) 2004 Michael Niedermayer
+ * Copyright (c) 2024 Marcus B Spencer
+ *
+ * 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 "avformat.h"
+#include "avio.h"
+#include "demux.h"
+#include "internal.h"
+#include "libavutil/opt.h"
+
+typedef struct FarbfeldDemuxContext {
+ const AVClass *class;
+ int start_number, start_number_range, img_first, img_number, img_last;
+ AVRational framerate;
+ int loop;
+} FarbfeldDemuxContext;
+
+
+/**
+ * Get index range of image files matched by path.
+ *
+ * @param pfirst_index pointer to index updated with the first number in the range
+ * @param plast_index pointer to index updated with the last number in the range
+ * @param path path which has to be matched by the image files in the range
+ * @param start_index minimum accepted value for the first index in the range
+ * @return -1 if no image file could be found
+ */
+static int find_image_range(int *pfirst_index, int *plast_index,
+ const char *path, int start_index, int start_index_range)
+{
+ char buf[1024];
+ int range, last_index, range1, first_index;
+
+ /* find the first image */
+ for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
+ if (av_get_frame_filename2(buf, sizeof(buf), path, first_index,
+ AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0) {
+ *pfirst_index =
+ *plast_index = 1;
+ if (avio_check(buf, AVIO_FLAG_READ) > 0)
+ return 0;
+ return -1;
+ }
+ if (avio_check(buf, AVIO_FLAG_READ) > 0)
+ break;
+ }
+ if (first_index == start_index + start_index_range)
+ goto fail;
+
+ /* find the last image */
+ last_index = first_index;
+ for (;;) {
+ range = 0;
+ for (;;) {
+ if (!range)
+ range1 = 1;
+ else
+ range1 = 2 * range;
+ if (av_get_frame_filename2(buf, sizeof(buf), path,
+ last_index + range1, AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0)
+ goto fail;
+ if (avio_check(buf, AVIO_FLAG_READ) <= 0)
+ break;
+ range = range1;
+ /* just in case... */
+ if (range >= (1 << 30))
+ goto fail;
+ }
+ /* we are sure than image last_index + range exists */
+ if (!range)
+ break;
+ last_index += range;
+ }
+ *pfirst_index = first_index;
+ *plast_index = last_index;
+ return 0;
+
+ fail:
+ return -1;
+}
+
+static int farbfeld_init(AVFormatContext *ctx)
+{
+ FarbfeldDemuxContext *priv = ctx->priv_data;
+
+ ctx->ctx_flags |= AVFMTCTX_NOHEADER;
+
+ if (find_image_range(&priv->img_first, &priv->img_last, ctx->url,
+ priv->start_number, priv->start_number_range) < 0) {
+ av_log(ctx, AV_LOG_ERROR,
+ "Could find no file with path '%s' and index in the range %d-%d\n",
+ ctx->url, priv->start_number, priv->start_number +
+ priv->start_number_range - 1);
+ return AVERROR(ENOENT);
+ }
+
+ priv->img_number = priv->img_first;
+
+ return 0;
+}
+
+static int farbfeld_read_packet(AVFormatContext *ctx, AVPacket *pkt)
+{
+ FarbfeldDemuxContext *priv = ctx->priv_data;
+ unsigned char magic[8];
+ char filename[1024];
+ AVIOContext *pb;
+ AVStream *st;
+ int ret;
+
+ if (priv->loop && priv->img_number > priv->img_last)
+ priv->img_number = priv->img_first;
+ else if (priv->img_number > priv->img_last)
+ return AVERROR_EOF;
+
+ if (av_get_frame_filename2(filename, sizeof filename, ctx->url,
+ priv->img_number,
+ AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0
+ && priv->img_number > 1)
+ return AVERROR(EIO);
+
+ if ((ret = ctx->io_open(ctx, &pb, filename, AVIO_FLAG_READ, NULL)) < 0) {
+ av_log(ctx, AV_LOG_ERROR, "Could not open file : %s\n", filename);
+ return ret;
+ }
+
+ if ((ret = avio_read(pb, magic, 8)) < 0) {
+ ff_format_io_close(ctx, &pb);
+ return ret;
+ }
+
+ if (memcmp(magic, "farbfeld", 8)) {
+ ff_format_io_close(ctx, &pb);
+ return AVERROR_INVALIDDATA;
+ }
+
+ if (!(st = avformat_new_stream(ctx, NULL))) {
+ ff_format_io_close(ctx, &pb);
+ return AVERROR(ENOMEM);
+ }
+
+ st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO;
+ st->codecpar->format = AV_PIX_FMT_RGBA64BE;
+
+ st->codecpar->width = avio_rb32(pb);
+ st->codecpar->height = avio_rb32(pb);
+ st->codecpar->framerate =
+ st->avg_frame_rate =
+ st->r_frame_rate = priv->framerate;
+
+ if ((ret = av_get_packet(pb, pkt, avio_size(pb) - 16)) < 0)
+ return ret;
+
+ priv->img_number++;
+
+ return ff_format_io_close(ctx, &pb);
+}
+
+#define OFFSET(x) offsetof(FarbfeldDemuxContext, x)
+#define DEC AV_OPT_FLAG_DECODING_PARAM
+
+static const AVOption demuxoptions[] = {
+ { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE,{.str = "25"}, 0, INT_MAX, DEC },
+ { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, DEC },
+ { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC },
+ { "start_number_range", "set range for looking at the first sequence number", OFFSET(start_number_range), AV_OPT_TYPE_INT, {.i64 = 5}, 1, INT_MAX, DEC },
+ { NULL },
+};
+
+static const AVClass farbfeld_demux_class = {
+ .class_name = "FarbfeldDemuxContext",
+ .item_name = av_default_item_name,
+ .option = demuxoptions,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+const FFInputFormat ff_farbfeld_demuxer = {
+ .p.name = "farbfeld",
+ .p.long_name = NULL_IF_CONFIG_SMALL("farbfeld uncompressed image"),
+ .p.extensions = "ff",
+ .p.flags = AVFMT_NOTIMESTAMPS | AVFMT_NOFILE,
+ .p.priv_class = &farbfeld_demux_class,
+ .priv_data_size = sizeof(FarbfeldDemuxContext),
+ .read_header = farbfeld_init,
+ .read_packet = farbfeld_read_packet,
+};
diff --git a/libavformat/farbfeldenc.c b/libavformat/farbfeldenc.c
new file mode 100644
index 0000000000..3e6571f3a9
--- /dev/null
+++ b/libavformat/farbfeldenc.c
@@ -0,0 +1,153 @@
+/*
+ * misc image utilities
+ * YUV4MPEG muxer
+ * Image format
+ *
+ * Modified by Marcus B Spencer to suit the farbfeld muxer on 2 July 2024
+ *
+ * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ * Copyright (c) 2004 Michael Niedermayer
+ * Copyright (c) 2024 Marcus B Spencer
+ *
+ * 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 "avformat.h"
+#include "internal.h"
+#include "libavutil/avstring.h"
+#include "libavutil/frame.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/opt.h"
+#include "libavutil/mem.h"
+#include "mux.h"
+
+#define PLANE_COUNT 4 // required by av_image_copy_to_buffer
+
+typedef struct FarbfeldMuxContext {
+ const AVClass *class;
+ int start_number, img_number;
+ int update;
+} FarbfeldMuxContext;
+
+static int farbfeld_init(AVFormatContext *ctx)
+{
+ FarbfeldMuxContext *priv = ctx->priv_data;
+
+ if (ctx->streams[0]->codecpar->codec_id != AV_CODEC_ID_WRAPPED_AVFRAME &&
+ ctx->streams[0]->codecpar->codec_id != AV_CODEC_ID_RAWVIDEO) {
+ av_log(ctx, AV_LOG_ERROR, "Codec not supported.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ if (ctx->streams[0]->codecpar->format != AV_PIX_FMT_RGBA64BE) {
+ av_log(ctx, AV_LOG_ERROR,
+ "farbfeld only supports the rgba64be pixel format. "
+ "Add '-pix_fmt rgba64be' to your output options to resolve "
+ "this error.\n"
+ );
+ return AVERROR_INVALIDDATA;
+ }
+
+ priv->img_number = priv->start_number;
+
+ return 0;
+}
+
+static int farbfeld_write_packet(AVFormatContext *ctx, AVPacket *pkt)
+{
+ AVStream *st = ctx->streams[pkt->stream_index];
+ int width = st->codecpar->width, height = st->codecpar->height;
+ FarbfeldMuxContext *priv = ctx->priv_data;
+ char filename[1024];
+ const uint8_t *src;
+ const AVFrame *p;
+ AVIOContext *pb;
+ int ret;
+
+ if (priv->update)
+ av_strlcpy(filename, ctx->url, sizeof filename);
+ else if (av_get_frame_filename2(filename, sizeof filename, ctx->url,
+ priv->img_number, AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0) {
+ if (priv->img_number == priv->start_number) {
+ av_log(ctx, AV_LOG_WARNING, "The specified filename '%s' does not contain an image sequence pattern or a pattern is invalid.\n", ctx->url);
+ av_log(ctx, AV_LOG_WARNING, "Use a pattern such as %%03d for an image sequence.\n");
+ av_strlcpy(filename, ctx->url, sizeof filename);
+ } else {
+ av_log(ctx, AV_LOG_ERROR, "Cannot write more than one file with the same name.\n");
+ return AVERROR(EINVAL);
+ }
+ }
+
+ if ((ret = ctx->io_open(ctx, &pb, filename, AVIO_FLAG_WRITE, NULL)) < 0) {
+ av_log(ctx, AV_LOG_ERROR, "Could not open file : %s\n", filename);
+ return ret;
+ }
+
+ avio_write(pb, "farbfeld", 8);
+
+ avio_wb32(pb, width);
+ avio_wb32(pb, height);
+
+ if (st->codecpar->codec_id == AV_CODEC_ID_RAWVIDEO)
+ avio_write(pb, pkt->data, pkt->size);
+ else {
+ p = (const AVFrame *)pkt->data;
+ src = p->data[0];
+
+ for (int i = 0; i < height; i++) {
+ avio_write(pb, src, width * 8); // 8 bytes per pixel
+ src += p->linesize[0];
+ }
+ }
+
+ priv->img_number++;
+
+ avio_flush(pb);
+
+ return ff_format_io_close(ctx, &pb);
+}
+
+#define OFFSET(x) offsetof(FarbfeldMuxContext, x)
+#define ENC AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption muxoptions[] = {
+ { "update", "continuously overwrite one file", OFFSET(update), AV_OPT_TYPE_BOOL,{ .i64 = 0 }, 0, 1, ENC },
+ { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, ENC },
+ { NULL },
+};
+
+static const AVClass farbfeld_mux_class = {
+ .class_name = "FarbfeldMuxContext",
+ .item_name = av_default_item_name,
+ .option = muxoptions,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+const FFOutputFormat ff_farbfeld_muxer = {
+ .p.name = "farbfeld",
+ .p.long_name = NULL_IF_CONFIG_SMALL("farbfeld uncompressed image"),
+ .p.extensions = "ff",
+ .p.audio_codec = AV_CODEC_ID_NONE,
+ .p.video_codec = AV_CODEC_ID_WRAPPED_AVFRAME,
+ .p.subtitle_codec = AV_CODEC_ID_NONE,
+ .p.flags = AVFMT_NOTIMESTAMPS | AVFMT_NOFILE,
+ .p.priv_class = &farbfeld_mux_class,
+ .priv_data_size = sizeof(FarbfeldMuxContext),
+ .init = farbfeld_init,
+ .write_packet = farbfeld_write_packet,
+ .flags_internal = FF_OFMT_FLAG_MAX_ONE_OF_EACH,
+};
diff --git a/libavformat/version.h b/libavformat/version.h
index 384cbd49cc..4bde82abb4 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -31,8 +31,8 @@
#include "version_major.h"
-#define LIBAVFORMAT_VERSION_MINOR 5
-#define LIBAVFORMAT_VERSION_MICRO 101
+#define LIBAVFORMAT_VERSION_MINOR 6
+#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \
--
2.45.2
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [FFmpeg-devel] [PATCH v19] avformat: add farbfeld muxer and demuxer
2024-07-08 20:01 [FFmpeg-devel] [PATCH v19] avformat: add farbfeld muxer and demuxer Marcus B Spencer
@ 2024-07-10 14:03 ` Paul B Mahol
2024-07-12 5:44 ` [FFmpeg-devel] [PATCH v20] " Marcus B Spencer
0 siblings, 1 reply; 3+ messages in thread
From: Paul B Mahol @ 2024-07-10 14:03 UTC (permalink / raw)
To: FFmpeg development discussions and patches; +Cc: Marcus B Spencer
demuxer is wrong on multiple levels, it should operate as pipe/stream only
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To unsubscribe, visit link above, or email
ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
^ permalink raw reply [flat|nested] 3+ messages in thread
* [FFmpeg-devel] [PATCH v20] avformat: add farbfeld muxer and demuxer
2024-07-10 14:03 ` Paul B Mahol
@ 2024-07-12 5:44 ` Marcus B Spencer
0 siblings, 0 replies; 3+ messages in thread
From: Marcus B Spencer @ 2024-07-12 5:44 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: Marcus B Spencer
farbfeld is an uncompressed image format that is a part of suckless
tools (https://tools.suckless.org).
Its documentation is available at https://tools.suckless.org/farbfeld.
Add support for this image format in avformat.
Signed-off-by: Marcus B Spencer <marcus@marcusspencer.xyz>
---
Okay, Paul. I edited the demuxer into being a pipe demuxer.
I also edited a warning message in the muxer to mention the `-update` option
and also removed the unnecessary PLANE_COUNT macro.
Changelog | 1 +
doc/general_contents.texi | 4 +
libavformat/Makefile | 2 +
libavformat/allformats.c | 4 +-
libavformat/farbfelddec.c | 133 +++++++++++++++++++++++++++++++++
libavformat/farbfeldenc.c | 151 ++++++++++++++++++++++++++++++++++++++
libavformat/version.h | 4 +-
7 files changed, 296 insertions(+), 3 deletions(-)
create mode 100644 libavformat/farbfelddec.c
create mode 100644 libavformat/farbfeldenc.c
diff --git a/Changelog b/Changelog
index 3708e35a2a..10f2b1e239 100644
--- a/Changelog
+++ b/Changelog
@@ -17,6 +17,7 @@ version <next>:
- perlin video source
- D3D12VA HEVC encoder
- Cropping metadata parsing and writing in Matroska and MP4/MOV de/muxers
+- farbfeld muxer and demuxer
version 7.0:
- DXV DXT1 encoder
diff --git a/doc/general_contents.texi b/doc/general_contents.texi
index e7cf4f8239..bbc49d3665 100644
--- a/doc/general_contents.texi
+++ b/doc/general_contents.texi
@@ -489,6 +489,8 @@ library:
@item Electronic Arts Multimedia @tab @tab X
@tab Used in various EA games; files have extensions like WVE and UV2.
@item Ensoniq Paris Audio File @tab @tab X
+@item FF @tab X @tab X
+ @tab farbfeld uncompressed image
@item FFM (FFserver live feed) @tab X @tab X
@item Flash (SWF) @tab X @tab X
@item Flash 9 (AVM2) @tab X @tab X
@@ -786,6 +788,8 @@ following image formats are supported:
@tab Digital Picture Exchange
@item EXR @tab @tab X
@tab OpenEXR
+@item FF @tab X @tab X
+ @tab farbfeld uncompressed image
@item FITS @tab X @tab X
@tab Flexible Image Transport System
@item HDR @tab X @tab X
diff --git a/libavformat/Makefile b/libavformat/Makefile
index 7ca68a7036..e2bf420916 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -284,6 +284,8 @@ OBJS-$(CONFIG_IMAGE_CRI_PIPE_DEMUXER) += img2dec.o img2.o
OBJS-$(CONFIG_IMAGE_DDS_PIPE_DEMUXER) += img2dec.o img2.o
OBJS-$(CONFIG_IMAGE_DPX_PIPE_DEMUXER) += img2dec.o img2.o
OBJS-$(CONFIG_IMAGE_EXR_PIPE_DEMUXER) += img2dec.o img2.o
+OBJS-$(CONFIG_IMAGE_FARBFELD_PIPE_DEMUXER)+= farbfelddec.o
+OBJS-$(CONFIG_IMAGE_FARBFELD_MUXER) += farbfeldenc.o
OBJS-$(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
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index 305fa46532..01a9ef92e5 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -531,12 +531,14 @@ extern const FFInputFormat ff_xwma_demuxer;
extern const FFInputFormat ff_yop_demuxer;
extern const FFInputFormat ff_yuv4mpegpipe_demuxer;
extern const FFOutputFormat ff_yuv4mpegpipe_muxer;
-/* image demuxers */
+/* image (de)muxers */
extern const FFInputFormat ff_image_bmp_pipe_demuxer;
extern const FFInputFormat ff_image_cri_pipe_demuxer;
extern const FFInputFormat ff_image_dds_pipe_demuxer;
extern const FFInputFormat ff_image_dpx_pipe_demuxer;
extern const FFInputFormat ff_image_exr_pipe_demuxer;
+extern const FFInputFormat ff_image_farbfeld_pipe_demuxer;
+extern const FFOutputFormat ff_image_farbfeld_muxer;
extern const FFInputFormat ff_image_gem_pipe_demuxer;
extern const FFInputFormat ff_image_gif_pipe_demuxer;
extern const FFInputFormat ff_image_hdr_pipe_demuxer;
diff --git a/libavformat/farbfelddec.c b/libavformat/farbfelddec.c
new file mode 100644
index 0000000000..9e6ae72a98
--- /dev/null
+++ b/libavformat/farbfelddec.c
@@ -0,0 +1,133 @@
+/*
+ * Image format
+ * YUV4MPEG demuxer
+ *
+ * Modified by Marcus B Spencer to suit the farbfeld_pipe demuxer on 12 July 2024
+ *
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ * Copyright (c) 2004 Michael Niedermayer
+ * Copyright (c) 2024 Marcus B Spencer
+ *
+ * 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 "avformat.h"
+#include "avio.h"
+#include "demux.h"
+#include "internal.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/opt.h"
+
+#define FARBFELD_MAGIC_LEN 8
+#define FARBFELD_HEADER_LEN (8 + 4 + 4)
+
+typedef struct FarbfeldDemuxContext {
+ const AVClass *class;
+ AVRational framerate;
+ int loop;
+} FarbfeldDemuxContext;
+
+static int farbfeld_read_header(AVFormatContext *ctx)
+{
+ FarbfeldDemuxContext *priv = ctx->priv_data;
+ char magic[FARBFELD_MAGIC_LEN];
+ int width, height;
+ AVStream *st;
+ int ret;
+
+ if ((ret = avio_read(ctx->pb, magic, FARBFELD_MAGIC_LEN)) < 0)
+ return ret;
+
+ if (memcmp(magic, "farbfeld", FARBFELD_MAGIC_LEN))
+ return AVERROR_INVALIDDATA;
+
+ if (!(st = avformat_new_stream(ctx, NULL)))
+ return AVERROR(ENOMEM);
+
+ st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codecpar->format = AV_PIX_FMT_RGBA64BE;
+ st->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO;
+
+ width = avio_rb32(ctx->pb);
+ height = avio_rb32(ctx->pb);
+
+ st->codecpar->width = width;
+ st->codecpar->height = height;
+ st->codecpar->framerate =
+ st->avg_frame_rate =
+ st->r_frame_rate = priv->framerate;
+
+ ctx->packet_size = av_image_get_buffer_size(st->codecpar->format, width, height, 1) + FARBFELD_HEADER_LEN;
+ if ((int)ctx->packet_size < 0)
+ return ctx->packet_size;
+
+ // reset position for inital packet
+ if ((ret = avio_seek(ctx->pb, 0, SEEK_SET)) < 0)
+ return ret;
+
+ return 0;
+}
+
+static int farbfeld_read_packet(AVFormatContext *ctx, AVPacket *pkt)
+{
+ char magic[FARBFELD_MAGIC_LEN];
+ int ret;
+
+ if ((ret = avio_read(ctx->pb, magic, FARBFELD_MAGIC_LEN)) < 0)
+ return ret;
+
+ if (memcmp(magic, "farbfeld", FARBFELD_MAGIC_LEN))
+ return AVERROR_INVALIDDATA;
+
+ // width and height are assumed to be constant
+ avio_skip(ctx->pb, 8);
+
+ if ((ret = av_get_packet(ctx->pb, pkt,
+ ctx->packet_size -
+ FARBFELD_HEADER_LEN)) < 0)
+ return ret;
+
+ pkt->stream_index = 0;
+
+ return 0;
+}
+
+#define OFFSET(x) offsetof(FarbfeldDemuxContext, x)
+#define DEC AV_OPT_FLAG_DECODING_PARAM
+
+static const AVOption demuxoptions[] = {
+ { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, DEC },
+ { NULL },
+};
+
+static const AVClass farbfeld_demux_class = {
+ .class_name = "FarbfeldDemuxContext",
+ .item_name = av_default_item_name,
+ .option = demuxoptions,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+const FFInputFormat ff_image_farbfeld_pipe_demuxer = {
+ .p.name = "farbfeld_pipe",
+ .p.long_name = NULL_IF_CONFIG_SMALL("piped farbfeld uncompressed image sequence"),
+ .p.extensions = "ff",
+ .p.flags = AVFMT_NOTIMESTAMPS,
+ .p.priv_class = &farbfeld_demux_class,
+ .priv_data_size = sizeof(FarbfeldDemuxContext),
+ .read_header = farbfeld_read_header,
+ .read_packet = farbfeld_read_packet,
+};
diff --git a/libavformat/farbfeldenc.c b/libavformat/farbfeldenc.c
new file mode 100644
index 0000000000..80baefb934
--- /dev/null
+++ b/libavformat/farbfeldenc.c
@@ -0,0 +1,151 @@
+/*
+ * misc image utilities
+ * YUV4MPEG muxer
+ * Image format
+ *
+ * Modified by Marcus B Spencer to suit the farbfeld muxer on 12 July 2024
+ *
+ * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ * Copyright (c) 2004 Michael Niedermayer
+ * Copyright (c) 2024 Marcus B Spencer
+ *
+ * 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 "avformat.h"
+#include "internal.h"
+#include "libavutil/avstring.h"
+#include "libavutil/frame.h"
+#include "libavutil/opt.h"
+#include "mux.h"
+
+typedef struct FarbfeldMuxContext {
+ const AVClass *class;
+ int start_number, img_number;
+ int update;
+} FarbfeldMuxContext;
+
+static int farbfeld_init(AVFormatContext *ctx)
+{
+ FarbfeldMuxContext *priv = ctx->priv_data;
+
+ if (ctx->streams[0]->codecpar->codec_id != AV_CODEC_ID_WRAPPED_AVFRAME &&
+ ctx->streams[0]->codecpar->codec_id != AV_CODEC_ID_RAWVIDEO) {
+ av_log(ctx, AV_LOG_ERROR, "Codec not supported.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ if (ctx->streams[0]->codecpar->format != AV_PIX_FMT_RGBA64BE) {
+ av_log(ctx, AV_LOG_ERROR,
+ "farbfeld only supports the rgba64be pixel format. "
+ "Add '-pix_fmt rgba64be' to your output options to resolve "
+ "this error.\n"
+ );
+ return AVERROR_INVALIDDATA;
+ }
+
+ priv->img_number = priv->start_number;
+
+ return 0;
+}
+
+static int farbfeld_write_packet(AVFormatContext *ctx, AVPacket *pkt)
+{
+ AVStream *st = ctx->streams[pkt->stream_index];
+ int width = st->codecpar->width, height = st->codecpar->height;
+ FarbfeldMuxContext *priv = ctx->priv_data;
+ char filename[1024];
+ const uint8_t *src;
+ const AVFrame *p;
+ AVIOContext *pb;
+ int ret;
+
+ if (priv->update)
+ av_strlcpy(filename, ctx->url, sizeof filename);
+ else if (av_get_frame_filename2(filename, sizeof filename, ctx->url,
+ priv->img_number, AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0) {
+ if (priv->img_number == priv->start_number) {
+ av_log(ctx, AV_LOG_WARNING, "The specified filename '%s' does not contain an image sequence pattern or a pattern is invalid.\n", ctx->url);
+ av_log(ctx, AV_LOG_WARNING,
+ "Use a pattern such as %%03d for an image sequence or "
+ "use the -update option (with -frames:v 1 if needed) to write a single image.\n");
+ av_strlcpy(filename, ctx->url, sizeof filename);
+ } else {
+ av_log(ctx, AV_LOG_ERROR, "Cannot write more than one file with the same name.\n");
+ return AVERROR(EINVAL);
+ }
+ }
+
+ if ((ret = ctx->io_open(ctx, &pb, filename, AVIO_FLAG_WRITE, NULL)) < 0) {
+ av_log(ctx, AV_LOG_ERROR, "Could not open file : %s\n", filename);
+ return ret;
+ }
+
+ avio_write(pb, "farbfeld", 8);
+
+ avio_wb32(pb, width);
+ avio_wb32(pb, height);
+
+ if (st->codecpar->codec_id == AV_CODEC_ID_RAWVIDEO)
+ avio_write(pb, pkt->data, pkt->size);
+ else {
+ p = (const AVFrame *)pkt->data;
+ src = p->data[0];
+
+ for (int i = 0; i < height; i++) {
+ avio_write(pb, src, width * 8); // 8 bytes per pixel
+ src += p->linesize[0];
+ }
+ }
+
+ priv->img_number++;
+
+ avio_flush(pb);
+
+ return ff_format_io_close(ctx, &pb);
+}
+
+#define OFFSET(x) offsetof(FarbfeldMuxContext, x)
+#define ENC AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption muxoptions[] = {
+ { "update", "continuously overwrite one file", OFFSET(update), AV_OPT_TYPE_BOOL,{ .i64 = 0 }, 0, 1, ENC },
+ { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, ENC },
+ { NULL },
+};
+
+static const AVClass farbfeld_mux_class = {
+ .class_name = "FarbfeldMuxContext",
+ .item_name = av_default_item_name,
+ .option = muxoptions,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+const FFOutputFormat ff_image_farbfeld_muxer = {
+ .p.name = "farbfeld",
+ .p.long_name = NULL_IF_CONFIG_SMALL("farbfeld uncompressed image"),
+ .p.extensions = "ff",
+ .p.audio_codec = AV_CODEC_ID_NONE,
+ .p.video_codec = AV_CODEC_ID_WRAPPED_AVFRAME,
+ .p.subtitle_codec = AV_CODEC_ID_NONE,
+ .p.flags = AVFMT_NOTIMESTAMPS | AVFMT_NOFILE,
+ .p.priv_class = &farbfeld_mux_class,
+ .priv_data_size = sizeof(FarbfeldMuxContext),
+ .init = farbfeld_init,
+ .write_packet = farbfeld_write_packet,
+ .flags_internal = FF_OFMT_FLAG_MAX_ONE_OF_EACH,
+};
diff --git a/libavformat/version.h b/libavformat/version.h
index 384cbd49cc..4bde82abb4 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -31,8 +31,8 @@
#include "version_major.h"
-#define LIBAVFORMAT_VERSION_MINOR 5
-#define LIBAVFORMAT_VERSION_MICRO 101
+#define LIBAVFORMAT_VERSION_MINOR 6
+#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \
--
2.45.2
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^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2024-07-12 5:48 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-07-08 20:01 [FFmpeg-devel] [PATCH v19] avformat: add farbfeld muxer and demuxer Marcus B Spencer
2024-07-10 14:03 ` Paul B Mahol
2024-07-12 5:44 ` [FFmpeg-devel] [PATCH v20] " Marcus B Spencer
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