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Subject: [FFmpeg-devel] [PATCH v4 0/7] print_graphs: Complete Filtergraph
Printing
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Reply-To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Cc: Soft Works <softworkz-at-hotmail.com@ffmpeg.org>,
softworkz <softworkz@hotmail.com>,
Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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This new version of the patchset starts by extracting the text formatting
and writing APIs from ffprobe.c into a subfolder under fftools. The type
naming follows public API naming style, ramping up for making it a public
API in the future without another big renaming.
The extraction of the text formatting APIs can be followed in smaller steps
in the recent patchset "[RFC] avtextformat: Transform text writing into an
independent API". To make this more review-friendly, the ffprobe changes are
done in two steps. The 2nd commit includes all essential changes while the
large part of renamings is deferred to the 3rd commit (containing renamings
only).
The graph-printing uses the extracted APIs. It supports all ffprobe output
formats now. Otherwise it's functional equivalent to the previous version:
* Different to other graph printing methods, this is outputting:
* both, simple and complex filtergraphs
* all graphs with runtime state (including auto-inserted filters)
* each graph with its inputs and outputs
* all filters with their in- and output pads
* all connections between all input- and output pads
* for each connection:
* the runtime-negotiated format and media type
* the hw context
* if video hw context, both: hw pixfmt + sw pixfmt
* Output can either be printed to stdout or written to specified file
* Output is machine-readable
Right after filtergraph configuration, the connection details are often not
complete yet. On the other side, when waiting too long or if an error occurs
somewhere, the graph info might never be printed. Experience has shown, that
the most suitable and realiable point in time for printing graph information
is right before cleanup.
Due to the changes for multi-threading, this is no longer doable as easy as
before, so the following method is used: Each filtergraph initiates its own
graph printing short before cleanup into a buffer. Before final cleanup in
ffmpeg.c, the outputs from the individual graphs are pieced together for the
actual output to file or console. (the structure according to the output
format remains valid)
Example output:
https://gist.github.com/softworkz/2a9e8699b288f5d40fa381c2a496e165
Update V2
* Change NULL checks to match common code style
* Add Add avfilter_link_get_hw_frames_ctx() function to avoid importing
filters.h
* Do the same without including avfilter/filters.h (as per note from
Andreas Reinhardt)
Update V3
* Includes extraction and generalization of the text formatting APIs
* All output formats supported now
Update V4
* Fix "new warnings" were generated
* Fix missing colon in commit message
* Rebase due to changesin ApiChanges
softworkz (7):
fftools/textformat: Extract and generalize textformat api from
ffprobe.c
fftools/ffprobe: Change to use textformat api
fftools/ffprobe: Rename writer_print_section_* and WriterContext
fftools/ffmpeg_filter: Move some declaration to new header file
avfilter/avfilter: Add avfilter_link_get_hw_frames_ctx()
fftools/ffmpeg_graphprint: Add options for filtergraph printing
fftools: Enable filtergraph printing and update docs
doc/APIchanges | 3 +
doc/ffmpeg.texi | 10 +
fftools/Makefile | 23 +
fftools/ffmpeg.c | 4 +
fftools/ffmpeg.h | 3 +
fftools/ffmpeg_filter.c | 193 +--
fftools/ffmpeg_filter.h | 232 +++
fftools/ffmpeg_graphprint.c | 518 +++++++
fftools/ffmpeg_graphprint.h | 35 +
fftools/ffmpeg_opt.c | 12 +
fftools/ffprobe.c | 2190 ++++------------------------
fftools/textformat/avtextformat.c | 671 +++++++++
fftools/textformat/avtextformat.h | 171 +++
fftools/textformat/avtextwriters.h | 68 +
fftools/textformat/tf_compact.c | 282 ++++
fftools/textformat/tf_default.c | 145 ++
fftools/textformat/tf_flat.c | 174 +++
fftools/textformat/tf_ini.c | 160 ++
fftools/textformat/tf_json.c | 215 +++
fftools/textformat/tf_xml.c | 221 +++
fftools/textformat/tw_avio.c | 129 ++
fftools/textformat/tw_buffer.c | 92 ++
fftools/textformat/tw_stdout.c | 82 ++
libavfilter/avfilter.c | 9 +
libavfilter/avfilter.h | 12 +
libavfilter/version.h | 2 +-
26 files changed, 3576 insertions(+), 2080 deletions(-)
create mode 100644 fftools/ffmpeg_filter.h
create mode 100644 fftools/ffmpeg_graphprint.c
create mode 100644 fftools/ffmpeg_graphprint.h
create mode 100644 fftools/textformat/avtextformat.c
create mode 100644 fftools/textformat/avtextformat.h
create mode 100644 fftools/textformat/avtextwriters.h
create mode 100644 fftools/textformat/tf_compact.c
create mode 100644 fftools/textformat/tf_default.c
create mode 100644 fftools/textformat/tf_flat.c
create mode 100644 fftools/textformat/tf_ini.c
create mode 100644 fftools/textformat/tf_json.c
create mode 100644 fftools/textformat/tf_xml.c
create mode 100644 fftools/textformat/tw_avio.c
create mode 100644 fftools/textformat/tw_buffer.c
create mode 100644 fftools/textformat/tw_stdout.c
base-commit: 0245e9382c748eba91645b65a377c4c9c4a44849
Published-As: https://github.com/ffstaging/FFmpeg/releases/tag/pr-ffstaging-52%2Fsoftworkz%2Fsubmit_print_graphs5-v4
Fetch-It-Via: git fetch https://github.com/ffstaging/FFmpeg pr-ffstaging-52/softworkz/submit_print_graphs5-v4
Pull-Request: https://github.com/ffstaging/FFmpeg/pull/52
Range-diff vs v3:
1: 6239813ba0 = 1: 55bfc6c6a6 fftools/textformat: Extract and generalize textformat api from ffprobe.c
2: 805f66cd92 = 2: 1950903610 fftools/ffprobe: Change to use textformat api
3: 8dcc17112d = 3: 01cc022c3b fftools/ffprobe: Rename writer_print_section_* and WriterContext
4: 06174ae7ef ! 4: aed98ad79d fftools/ffmpeg_filter: Move some declaration to new header file
@@ fftools/ffmpeg_filter.h (new)
+
+} FilterGraphPriv;
+
-+static FilterGraphPriv *fgp_from_fg(FilterGraph *fg)
++static inline FilterGraphPriv *fgp_from_fg(FilterGraph *fg)
+{
+ return (FilterGraphPriv*)fg;
+}
+
-+static const FilterGraphPriv *cfgp_from_cfg(const FilterGraph *fg)
++static inline const FilterGraphPriv *cfgp_from_cfg(const FilterGraph *fg)
+{
+ return (const FilterGraphPriv*)fg;
+}
@@ fftools/ffmpeg_filter.h (new)
+ } sub2video;
+} InputFilterPriv;
+
-+static InputFilterPriv *ifp_from_ifilter(InputFilter *ifilter)
++static inline InputFilterPriv *ifp_from_ifilter(InputFilter *ifilter)
+{
+ return (InputFilterPriv*)ifilter;
+}
@@ fftools/ffmpeg_filter.h (new)
+ unsigned flags;
+} OutputFilterPriv;
+
-+static OutputFilterPriv *ofp_from_ofilter(OutputFilter *ofilter)
++static inline OutputFilterPriv *ofp_from_ofilter(OutputFilter *ofilter)
+{
+ return (OutputFilterPriv*)ofilter;
+}
5: d93c23872f ! 5: 4b8d7ee51b avfilter/avfilter Add avfilter_link_get_hw_frames_ctx()
@@ Metadata
Author: softworkz <softworkz@hotmail.com>
## Commit message ##
- avfilter/avfilter Add avfilter_link_get_hw_frames_ctx()
+ avfilter/avfilter: Add avfilter_link_get_hw_frames_ctx()
## doc/APIchanges ##
@@ doc/APIchanges: The last version increases of all libraries were on 2024-03-07
@@ doc/APIchanges: The last version increases of all libraries were on 2024-03-07
+2025-02-xx - xxxxxxxxxx - lavfi 10.10.100 - avfilter.h
+ Add avfilter_link_get_hw_frames_ctx().
+
- 2025-02-xx - xxxxxxxxxx - lavu 59.57.100 - log.h
- Add flags AV_LOG_PRINT_TIME and AV_LOG_PRINT_DATETIME.
+ 2025-03-01 - xxxxxxxxxx - lavu 59.58.100 - pixfmt.h
+ Add AV_PIX_FMT_GRAY32BE and AV_PIX_FMT_GRAY32LE.
## libavfilter/avfilter.c ##
6: 9d76b4df1b ! 6: f43eb56f39 fftools/ffmpeg_graphprint: Add options for filtergraph printing
@@ fftools/ffmpeg_graphprint.c (new)
+#include "libavutil/hwcontext.h"
+#include "textformat/avtextformat.h"
+
++typedef enum {
++ SECTION_ID_ROOT,
++ SECTION_ID_PROGRAM_VERSION,
++ SECTION_ID_FILTERGRAPHS,
++ SECTION_ID_FILTERGRAPH,
++ SECTION_ID_INPUTS,
++ SECTION_ID_INPUT,
++ SECTION_ID_OUTPUTS,
++ SECTION_ID_OUTPUT,
++ SECTION_ID_FILTERS,
++ SECTION_ID_FILTER,
++ SECTION_ID_HWDEViCECONTEXT,
++ SECTION_ID_HWFRAMESCONTEXT,
++ SECTION_ID_ERROR,
++ SECTION_ID_LOG,
++ SECTION_ID_LOGS,
++} SectionID;
++
++static struct AVTextFormatSection sections[] = {
++ [SECTION_ID_ROOT] = { SECTION_ID_ROOT, "GraphDescription", AV_TEXTFORMAT_SECTION_FLAG_IS_WRAPPER,
++ { SECTION_ID_ERROR, SECTION_ID_PROGRAM_VERSION, SECTION_ID_FILTERGRAPHS, SECTION_ID_LOGS, -1} },
++ [SECTION_ID_PROGRAM_VERSION] = { SECTION_ID_PROGRAM_VERSION, "ProgramVersion", 0, { -1 } },
++
++ [SECTION_ID_FILTERGRAPHS] = { SECTION_ID_FILTERGRAPHS, "Graphs", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_FILTERGRAPH, -1 } },
++ [SECTION_ID_FILTERGRAPH] = { SECTION_ID_FILTERGRAPH, "Graph", 0, { SECTION_ID_INPUTS, SECTION_ID_OUTPUTS, SECTION_ID_FILTERS, -1 }, },
++
++ [SECTION_ID_INPUTS] = { SECTION_ID_INPUTS, "Inputs", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_INPUT, SECTION_ID_ERROR, -1 } },
++ [SECTION_ID_INPUT] = { SECTION_ID_INPUT, "Input", 0, { SECTION_ID_HWFRAMESCONTEXT, SECTION_ID_ERROR, -1 }, },
++
++ [SECTION_ID_OUTPUTS] = { SECTION_ID_OUTPUTS, "Outputs", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_OUTPUT, SECTION_ID_ERROR, -1 } },
++ [SECTION_ID_OUTPUT] = { SECTION_ID_OUTPUT, "Output", 0, { SECTION_ID_HWFRAMESCONTEXT, SECTION_ID_ERROR, -1 }, },
++
++ [SECTION_ID_FILTERS] = { SECTION_ID_FILTERS, "Filters", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_FILTER, SECTION_ID_ERROR, -1 } },
++ [SECTION_ID_FILTER] = { SECTION_ID_FILTER, "Filter", 0, { SECTION_ID_HWDEViCECONTEXT, SECTION_ID_ERROR, -1 }, },
++
++ [SECTION_ID_HWDEViCECONTEXT] = { SECTION_ID_HWDEViCECONTEXT, "HwDeviceContext", 0, { SECTION_ID_ERROR, -1 }, },
++ [SECTION_ID_HWFRAMESCONTEXT] = { SECTION_ID_HWFRAMESCONTEXT, "HwFramesContext", 0, { SECTION_ID_ERROR, -1 }, },
++
++ [SECTION_ID_ERROR] = { SECTION_ID_ERROR, "Error", 0, { -1 } },
++ [SECTION_ID_LOGS] = { SECTION_ID_LOGS, "Log", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_LOG, -1 } },
++ [SECTION_ID_LOG] = { SECTION_ID_LOG, "LogEntry", 0, { -1 }, },
++};
++
+/* Text Format API Shortcuts */
+#define print_int(k, v) avtext_print_integer(w, k, v)
+#define print_q(k, v, s) avtext_print_rational(w, k, v, s)
@@ fftools/ffmpeg_graphprint.c (new)
+
+static void print_link(AVTextFormatContext *w, AVFilterLink *link)
+{
++ AVBufferRef *hw_frames_ctx;
+ char layoutString[64];
+
+ switch (link->type) {
@@ fftools/ffmpeg_graphprint.c (new)
+ break;
+ }
+
-+ AVBufferRef *hw_frames_ctx = avfilter_link_get_hw_frames_ctx(link);
++ hw_frames_ctx = avfilter_link_get_hw_frames_ctx(link);
+
+ if (hw_frames_ctx && hw_frames_ctx->buffer) {
+ print_hwframescontext(w, (AVHWFramesContext *)hw_frames_ctx->data);
@@ fftools/ffmpeg_graphprint.h (new)
+#include "libavutil/bprint.h"
+#include "textformat/avtextformat.h"
+
-+typedef enum {
-+ SECTION_ID_ROOT,
-+ SECTION_ID_PROGRAM_VERSION,
-+ SECTION_ID_FILTERGRAPHS,
-+ SECTION_ID_FILTERGRAPH,
-+ SECTION_ID_INPUTS,
-+ SECTION_ID_INPUT,
-+ SECTION_ID_OUTPUTS,
-+ SECTION_ID_OUTPUT,
-+ SECTION_ID_FILTERS,
-+ SECTION_ID_FILTER,
-+ SECTION_ID_HWDEViCECONTEXT,
-+ SECTION_ID_HWFRAMESCONTEXT,
-+ SECTION_ID_ERROR,
-+ SECTION_ID_LOG,
-+ SECTION_ID_LOGS,
-+
-+} SectionID;
-+
-+static struct AVTextFormatSection sections[] = {
-+ [SECTION_ID_ROOT] = { SECTION_ID_ROOT, "GraphDescription", AV_TEXTFORMAT_SECTION_FLAG_IS_WRAPPER,
-+ { SECTION_ID_ERROR, SECTION_ID_PROGRAM_VERSION, SECTION_ID_FILTERGRAPHS, SECTION_ID_LOGS, -1} },
-+ [SECTION_ID_PROGRAM_VERSION] = { SECTION_ID_PROGRAM_VERSION, "ProgramVersion", 0, { -1 } },
-+
-+ [SECTION_ID_FILTERGRAPHS] = { SECTION_ID_FILTERGRAPHS, "Graphs", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_FILTERGRAPH, -1 } },
-+ [SECTION_ID_FILTERGRAPH] = { SECTION_ID_FILTERGRAPH, "Graph", 0, { SECTION_ID_INPUTS, SECTION_ID_OUTPUTS, SECTION_ID_FILTERS, -1 }, },
-+
-+ [SECTION_ID_INPUTS] = { SECTION_ID_INPUTS, "Inputs", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_INPUT, SECTION_ID_ERROR, -1 } },
-+ [SECTION_ID_INPUT] = { SECTION_ID_INPUT, "Input", 0, { SECTION_ID_HWFRAMESCONTEXT, SECTION_ID_ERROR, -1 }, },
-+
-+ [SECTION_ID_OUTPUTS] = { SECTION_ID_OUTPUTS, "Outputs", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_OUTPUT, SECTION_ID_ERROR, -1 } },
-+ [SECTION_ID_OUTPUT] = { SECTION_ID_OUTPUT, "Output", 0, { SECTION_ID_HWFRAMESCONTEXT, SECTION_ID_ERROR, -1 }, },
-+
-+ [SECTION_ID_FILTERS] = { SECTION_ID_FILTERS, "Filters", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_FILTER, SECTION_ID_ERROR, -1 } },
-+ [SECTION_ID_FILTER] = { SECTION_ID_FILTER, "Filter", 0, { SECTION_ID_HWDEViCECONTEXT, SECTION_ID_ERROR, -1 }, },
-+
-+ [SECTION_ID_HWDEViCECONTEXT] = { SECTION_ID_HWDEViCECONTEXT, "HwDeviceContext", 0, { SECTION_ID_ERROR, -1 }, },
-+ [SECTION_ID_HWFRAMESCONTEXT] = { SECTION_ID_HWFRAMESCONTEXT, "HwFramesContext", 0, { SECTION_ID_ERROR, -1 }, },
-+
-+ [SECTION_ID_ERROR] = { SECTION_ID_ERROR, "Error", 0, { -1 } },
-+ [SECTION_ID_LOGS] = { SECTION_ID_LOGS, "Log", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_LOG, -1 } },
-+ [SECTION_ID_LOG] = { SECTION_ID_LOG, "LogEntry", 0, { -1 }, },
-+};
-+
+int print_filtergraphs(FilterGraph **graphs, int nb_graphs, OutputFile **output_files, int nb_output_files);
+int print_filtergraph(FilterGraph *fg, AVFilterGraph *graph);
+
7: 049f720ae7 = 7: c0cf4adcd9 fftools: Enable filtergraph printing and update docs
--
ffmpeg-codebot
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