Add support for raw CDP (Caption Distribution Packet) files #1978
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Root cause: CCX_RAW_TYPE data from MXF demuxer was not being passed to the DTVCC decoder, only to the legacy 608 decoder via process_raw_with_field. Changes: - general_loop.c: Changed CCX_RAW_TYPE handling to use process_cc_data instead of process_raw_with_field to properly invoke DTVCC decoder - general_loop.c: Added DTVCC activation for MXF/GXF sources since they may contain 708 captions - general_loop.c: Initialize timing from caption PTS when not set - ccx_dtvcc.h: Added ccxr_dtvcc_set_active FFI declaration - lib.rs: Added ccxr_dtvcc_set_active function to enable DTVCC decoder - decoder/mod.rs: Fixed flush logic to always process visible windows - ccx_demuxer_mxf.c: Fixed PTS calculation to use 90kHz units based on edit_rate, and changed verbose logging to debug() Fixes #1647 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Root cause: CCX_RAW_TYPE data from MXF demuxer was not being passed to the DTVCC decoder, only to the legacy 608 decoder via process_raw_with_field. Changes: - general_loop.c: Changed CCX_RAW_TYPE handling to use process_cc_data instead of process_raw_with_field to properly invoke DTVCC decoder - general_loop.c: Added DTVCC activation for MXF/GXF sources since they may contain 708 captions - general_loop.c: Initialize timing from caption PTS when not set - ccx_dtvcc.h: Added ccxr_dtvcc_set_active FFI declaration - lib.rs: Added ccxr_dtvcc_set_active function to enable DTVCC decoder - decoder/mod.rs: Fixed flush logic to always process visible windows - ccx_demuxer_mxf.c: Fixed PTS calculation to use 90kHz units based on edit_rate, and changed verbose logging to debug() Fixes #1647 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Adds support for processing raw CDP files captured from SDI VANC (e.g., from Blackmagic Decklink capture cards). CDP packets are automatically detected by their 0x9669 identifier when using -in=raw. Changes: - Added process_raw_cdp() function to parse concatenated CDP packets - Added CDP format detection in raw_loop() (checks for 0x9669 header) - Extracts cc_data triplets from CDP packets and processes them through process_cc_data() for both CEA-608 and CEA-708 support - Calculates timing based on CDP frame rate and packet count Usage: ccextractor -in=raw captured_vanc.bin -o output.srt Fixes #1406 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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- Apply cargo fmt to decoder/mod.rs - Fix clippy manual_flatten warning in build.rs by using .flatten() 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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CCExtractor CI platform finished running the test files on linux. Below is a summary of the test results, when compared to test for commit 1c75156...:
NOTE: The following tests have been failing on the master branch as well as the PR:
This PR does not introduce any new test failures. However, some tests are failing on both master and this PR (see above). Check the result page for more info. |
Collaborator
CCExtractor CI platform finished running the test files on windows. Below is a summary of the test results, when compared to test for commit 1c75156...:
NOTE: The following tests have been failing on the master branch as well as the PR:
This PR does not introduce any new test failures. However, some tests are failing on both master and this PR (see above). Check the result page for more info. |
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Summary
0x9669identifier when using-in=rawDependencies
ccxr_dtvcc_set_activefunction used here.Changes
process_raw_cdp()function to parse concatenated CDP packetsraw_loop()(checks for0x9669header)process_cc_data()Usage
Test plan
Note: The sample on the sample platform contains only null caption data (no actual text content), but the parsing and detection works correctly.
Fixes #1406
🤖 Generated with Claude Code