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45ef6b5e13
Original commit message from CVS: * gst-libs/gst/audio/multichannel.c: (gst_audio_check_channel_positions), (gst_audio_set_structure_channel_positions_list), (gst_audio_fixate_channel_positions): Allow rear center together with rear left/right and other previously conflicting channel positions. The reason why they weren't allowed was the channel mixing implementation in audioconvert. Also take this into account when fixing channel layouts. Allow setting channel positions for 1/2 channels when using gst_audio_set_structure_channel_position(). * gst/audioconvert/gstchannelmix.c: (gst_channel_mix_fill_compatible), (gst_channel_mix_detect_pos), (gst_channel_mix_fill_one_other), (gst_channel_mix_fill_others), (gst_channel_mix_fill_special), (gst_channel_mix_fill_matrix): Major rewrite of the channel mixing. We now allow previously conflicting channel positions to appear together (rear center and rear left/right for example). Fixes bug #533817. Rework the way channels are mixed together to take more possible channel positions into account, properly mix from/to side channels and don't assume that either center, left&right or nothing of a specific position is available anymore. * tests/check/elements/audioconvert.c: (GST_START_TEST): Adjust unit tests with non-standard 1/2 channel layouts to the more correct new behaviour. Add a unit test for 5.1->Stereo downmixing. |
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