Smptett encoder #1814

DhanushVarma-2 · 2025-12-14T09:34:26Z

In raising this pull request, I confirm the following (please check boxes):

I have read and understood the contributors guide.
I have checked that another pull request for this purpose does not exist.
I have considered, and confirmed that this submission will be valuable to others.
I accept that this submission may not be used, and the pull request closed at the will of the maintainer.
I give this submission freely, and claim no ownership to its content.
I have mentioned this change in the changelog.

My familiarity with the project is as follows (check one):

I have never used CCExtractor.
I have used CCExtractor just a couple of times.
I absolutely love CCExtractor, but have not contributed previously.
I am an active contributor to CCExtractor.

{pull request content here}
I am still working on it

…borrow fix, unimplemented stubs

- Implemented write_cc_buffer_as_smptett with full styling support * Handles italics, bold, underline, and font color styling * Calculates proper row/column positioning for SMPTE-TT * Converts HTML-style tags to SMPTE-TT style attributes - Implemented write_cc_subtitle_as_smptett * Processes linked list of subtitle structures * Properly manages memory and frees C-allocated data * Handles CC_TEXT subtitle types - Implemented write_cc_bitmap_as_smptett * Feature-gated for OCR support (hardsubx_ocr) * Proper cleanup of bitmap data - Added helper functions: * escape_xml() for XML entity escaping * write_stringz_as_smptett() for core formatting * process_line_styling() for style tag conversion * write_wrapped() for safe file I/O - Added comprehensive test coverage: * XML escaping tests * Styling conversion tests (italic, bold, no styling) * All tests passing (268 total) Matches C implementation behavior while using safe Rust idioms. Fixes CCExtractor#1789

ccextractor-bot · 2025-12-14T11:40:39Z

CCExtractor CI platform finished running the test files on windows. Below is a summary of the test results, when compared to test for commit 134cd75...:

Report Name	Tests Passed
Broken	13/13
CEA-708	14/14
DVB	7/7
DVD	3/3
DVR-MS	2/2
General	27/27
Hardsubx	1/1
Hauppage	3/3
MP4	3/3
NoCC	10/10
Options	72/86
Teletext	21/21
WTV	13/13
XDS	30/34

Your PR breaks these cases:

ccextractor --parsePMT --out=srt c83f765c66...
ccextractor --autoprogram --out=ttxt --xds --latin1 --ucla e274a73653...
ccextractor --autoprogram --out=ttxt --latin1 --ucla --xds b22260d065...
ccextractor --autoprogram --out=ttxt --latin1 --ucla --xds 88cd42b89a...
ccextractor --autoprogram --out=ttxt --latin1 --ucla --xds 0069dffd21...

NOTE: The following tests have been failing on the master branch as well as the PR:

ccextractor --no-fontcolor c83f765c66..., Last passed:
Test 6721
ccextractor --bufferinput c83f765c66..., Last passed:
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ccextractor --no-bufferinput c83f765c66..., Last passed:
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ccextractor --buffersize 1M c83f765c66..., Last passed:
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ccextractor --no-codec dvbsub c83f765c66..., Last passed:
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ccextractor --608 --out=srt c83f765c66..., Last passed:
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ccextractor --no-sync --out=srt c83f765c66..., Last passed:
Test 6689
ccextractor --parsedebug --out=srt c83f765c66..., Last passed:
Test 6721

Congratulations: Merging this PR would fix the following tests:

ccextractor --autoprogram --out=srt --latin1 f1422b8bfe..., Last passed: Never
ccextractor --datapid 5603 --autoprogram --out=srt --latin1 --teletext 85c7fc1ad7..., Last passed: Never
ccextractor --autoprogram --out=srt --latin1 --quant 0 85271be4d2..., Last passed: Never
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ccextractor --out=srt --latin1 --autoprogram 29e5ffd34b..., Last passed: Never
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ccextractor --autoprogram --out=srt --latin1 --output-field 1 a65d39ccb3..., Last passed: Never
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ccextractor --autoprogram --out=srt --latin1 --ucla c8dc039a88..., Last passed: Never
ccextractor --autoprogram --out=srt --latin1 --ucla 88cd42b89a..., Last passed: Never
ccextractor --autoprogram --out=ttxt --latin1 --ucla --xds 7f41299cc7..., Last passed: Never
ccextractor --autoprogram --out=srt --latin1 --ucla 7f41299cc7..., Last passed: Never

It seems that not all tests were passed completely. This is an indication that the output of some files is not as expected (but might be according to you).

Check the result page for more info.

- Exported write_stringz_as_smptett with #[no_mangle] for C calls - All three main functions now properly exported - Renamed C implementation to .bak (kept as reference) - Successfully builds and links with C code - All 268 tests passing

The SMPTE-TT encoder has been ported to Rust. Exclude the C file from CMake builds to avoid duplicate symbols. The C file is still needed for autoconf builds.

This reverts commit 8ee175a.

- Remove PKG_CONFIG_FOUND condition for Rust build - Conditionally exclude C file only when Rust library is built - Fix CMake syntax errors (removed duplicate target_link_libraries) - Rust SMPTE-TT encoder successfully linked and working - All 4 SMPTE-TT functions exported from Rust with #[no_mangle] - Builds successfully on macOS

- Remove conditional logic, always exclude ccx_encoders_smptett.c - Align with Rust-required configuration - Prevent duplicate symbol conflicts

- Fix CMake to properly detect and use cargo instead of rustc - Add macOS-specific frameworks (Security, CoreFoundation) for Rust linking - Build Rust library during CMake configuration with execute_process - Link Rust static library with proper system dependencies - Exclude C SMPTE-TT implementation when Rust is available Build tested successfully on macOS with Apple Silicon. Fixes macOS build failures.

The build.command script was compiling both the C and Rust implementations of SMPTE-TT encoder, causing duplicate symbol errors during linking. Modified SRC_CCX collection to exclude ccx_encoders_smptett.c using grep -v, matching the exclusion already done in CMakeLists.txt. This fixes the Mac build_shell CI failure.

Mac CMake CI jobs were failing because Rust was not installed. Added Rust installation step to both cmake and cmake_ocr_hardsubx jobs using rustup, matching the approach used in Linux workflows. This fixes the Mac CMake build failures.

Previously was using execute_process to manually build Rust and set library paths, which conflicted with Corrosion's automatic handling in src/rust/CMakeLists.txt. Changes: - Removed duplicate execute_process(cargo build) call - Removed manual RUST_LIB path setting - Now properly link to 'ccx_rust' target created by Corrosion - Keep platform-specific system libraries (Security/CoreFoundation for macOS) This should fix the CMake CI build failures on Linux and Mac.

ccextractor-bot · 2025-12-19T18:56:52Z

CCExtractor CI platform finished running the test files on linux. Below is a summary of the test results, when compared to test for commit a0593c6...:

Report Name	Tests Passed
Broken	9/13
CEA-708	8/14
DVB	6/7
DVD	0/3
DVR-MS	2/2
General	4/27
Hardsubx	0/1
Hauppage	0/3
MP4	3/3
NoCC	10/10
Options	72/86
Teletext	20/21
WTV	10/13
XDS	13/34

NOTE: The following tests have been failing on the master branch as well as the PR:

ccextractor --autoprogram --out=ttxt --latin1 --ucla --xds 8e8229b88b..., Last passed:
Test 6906
ccextractor --autoprogram --out=ttxt --latin1 7236304cfc..., Last passed:
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ccextractor --out=srt --latin1 611b4a9235..., Last passed:
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ccextractor --out=sami --latin1 --autoprogram --no-goptime 5b4e0a6034..., Last passed:
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ccextractor --service 1 --out=txt --no-bom --no-rollup ea83ff7bcb..., Last passed:
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ccextractor --service 1 --out=txt --no-bom --no-rollup b5d6aad89f..., Last passed:
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ccextractor --service 1[EUC-KR] --out=txt --no-rollup b5d6aad89f..., Last passed:
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ccextractor --service 1[EUC-KR] b5d6aad89f..., Last passed:
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ccextractor --service 1[EUC-KR] --no-rollup b5d6aad89f..., Last passed:
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ccextractor --service all[EUC-KR] b5d6aad89f..., Last passed:
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ccextractor --autoprogram --out=srt --latin1 --quant 0 85271be4d2..., Last passed:
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ccextractor --autoprogram --out=ttxt --latin1 5ae2007a79..., Last passed:
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ccextractor --autoprogram --out=ttxt --latin1 9a496d3828..., Last passed:
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ccextractor --out=srt --latin1 --autoprogram 56c9f34548..., Last passed:
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ccextractor --autoprogram --out=srt --latin1 e9b9008fdf..., Last passed:
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ccextractor --autoprogram --out=ttxt --latin1 99e5eaafdc..., Last passed:
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ccextractor --autoprogram --out=ttxt --latin1 --ucla 7aad20907e..., Last passed:
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ccextractor --autoprogram --out=srt --latin1 --sentencecap c032183ef0..., Last passed:
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ccextractor --endcreditstext "CCextractor Ends crdit Testing" addf5e2fc9..., Last passed:
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ccextractor --autoprogram --out=ttxt --latin1 --ucla --xds c8dc039a88..., Last passed:
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ccextractor --autoprogram --out=srt --latin1 --ucla 53339f3455..., Last passed:
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ccextractor --autoprogram --out=ttxt --latin1 --ucla --xds 83b03036a2..., Last passed:
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ccextractor --autoprogram --out=ttxt --latin1 --ucla --xds 7d3f25c32c..., Last passed:
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ccextractor --autoprogram --out=srt --latin1 --ucla 7d3f25c32c..., Last passed:
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ccextractor --autoprogram --out=ttxt --latin1 --ucla --xds f41d4c29a1..., Last passed:
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ccextractor --autoprogram --out=ttxt --latin1 --ucla --xds 7f41299cc7..., Last passed:
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ccextractor --autoprogram --out=ttxt --latin1 --ucla --xds 0069dffd21..., Last passed:
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Congratulations: Merging this PR would fix the following tests:

ccextractor --autoprogram --out=srt --latin1 1d9731bd80..., Last passed: Never
ccextractor --out=srt --latin1 --autoprogram 73d9313d64..., Last passed: Never
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All tests passing on the master branch were passed completely.

Check the result page for more info.

The Rust installation adds cargo to GITHUB_PATH, but this only takes effect in subsequent steps. CMake runs in the same step and needs to source the cargo environment explicitly to find the cargo binary. Added 'source $HOME/.cargo/env' before cmake commands in both: - cmake job (basic build) - cmake_ocr_hardsubx job (build with OCR and hardsubx) This fixes the Linux CMake CI build failures.

All Linux CI jobs now install Rust before building: - build_shell - build_autoconf - cmake - cmake_ocr_hardsubx - build_rust Each job installs Rust using rustup and sources the cargo environment immediately, making cargo available for subsequent build steps. Removed redundant 'source $HOME/.cargo/env' from cmake run commands since it's already done in the Install Rust step. This fixes all Linux CMake CI build failures.

dhanush varma added 6 commits December 11, 2025 00:57

chore: ignore local build artifacts and backups

e474692

rust: add SMPTE-TT encoder skeleton

0499f4f

rust: add initial SMPTE-TT encoder skeleton

0c510c1

rust: add initial SMPTE-TT encoder skeleton

8107a94

Fix SMPTE-TT encoder helper: pointer→slice conversion, XML escaping, …

0820e95

…borrow fix, unimplemented stubs

Add C FFI exports and remove C implementation

2264917

- Exported write_stringz_as_smptett with #[no_mangle] for C calls - All three main functions now properly exported - Renamed C implementation to .bak (kept as reference) - Successfully builds and links with C code - All 268 tests passing

DhanushVarma-2 changed the title ~~Smptett encoder[WIP]~~ Smptett encoder Dec 14, 2025

DhanushVarma-2 force-pushed the smptett-encoder branch 2 times, most recently from bd8a8ab to 2264917 Compare December 16, 2025 04:17

Dhanush Varma added 10 commits December 16, 2025 09:48

Exclude smptett C file from CMake builds

8ee175a

The SMPTE-TT encoder has been ported to Rust. Exclude the C file from CMake builds to avoid duplicate symbols. The C file is still needed for autoconf builds.

Merge upstream master, resolve .gitignore conflict

554de1b

Revert "Exclude smptett C file from CMake builds"

02b33ea

This reverts commit 8ee175a.

fix: Make Rust required

9a64f02

fix: Ensure C SMPTE-TT file is excluded when Rust is available

74671d3

- Remove conditional logic, always exclude ccx_encoders_smptett.c - Align with Rust-required configuration - Prevent duplicate symbol conflicts

ci: Add Rust installation to Mac CMake workflows

b2e3b64

Mac CMake CI jobs were failing because Rust was not installed. Added Rust installation step to both cmake and cmake_ocr_hardsubx jobs using rustup, matching the approach used in Linux workflows. This fixes the Mac CMake build failures.

Dhanush Varma added 2 commits December 20, 2025 10:59

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