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(PGS ..) via FFMPEGFMediaPlayer/FFmpeg
FFMPEGFMediaPlayer related changes:
- Add libswscale (6th FFmpeg lib used) for sws_getCachedContext(), sws_scale() and sws_freeContext(),
used natively to convert the palette'ed bitmap into RGBA colorspace -> GL texture
- Handling AVSubtitleRect.type SUBTITLE_BITMAP
-- only handled if libswscale is available
-- config/adjust texture object
-- sws_scale palette'ed bitmap to texture
-- intermediate memory is cached, may be resized and free'ed at destroy
-- texture objects are managed and passed from GLMediaPlayerImpl,
as they are also forwarded to player client via SubBitmapEvent
- Passing the AVCodecID to GLMediaPlayerImpl, converted to our CodecID enum.
- Unifying creation and opening of AVCodecContext with 'createOpenedAVCodecContext(..)'
+++
SubtitleEvent*
- SubTextEvent now also handles ASS.Dialogue (FFmpeg 4)
besides ASS.Event (FFmpeg 5, 6, ..).
+++
GLMediaPlayerImpl
- Added ringbuffer subTexFree, managing Texture for bitmap'ed subtitles
-- Uses 1 bitmap-subtitle Texture per used textureCount in cache,
as one bitmap-subtile can be displayed per frame.
Could be potentially reduced to just 2 .. but resources used are
relatively low here.
- Validating subTexFree + videoFramesFree usage,
use blocking get/put ringbuffer due to utilization from different threads.
- Receives subtitle content from native getNextPacket0() via callback,
creates SubtitleEvent instance and passes it to a SubtitleEventListener - if exists.
(See MediaButton example)
-- SubBitmapEvent also gets its special SubBitmapEvent.TextureOwner to handle client releasing
the event and allowing us to put back the Texture resource to 'subTexFree'.
This passing through of the Texture object is probably a weakness of this lifecycle
and requires the client to ensure SubtitleEvent.release() gets called.
See MediaButton example!
- Exposing CodecID, allowing clients like MediaButton to handle SubtitleEvent content according to codec
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GLMediaEventListener, easing listener callbacks; Prepare SubtitleEventListener generalization (Bug 1494)
Moves pushSound(), pushSubtitle*() from FFMPEGMediaPlayer to GLMediaPlayerImpl,
as it is handled in a generic way - even though currently only called by native FFMPEGMediaPlayer implementation.
Note: This patch is incomplete, i.e. not even compile clean.
But choses as-is to semantically split the work to ease review.
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func-ptr in native; readNextPacket0() passes video+subtitle texTarget and texID
For bitmap subtitles we need to push the bitmap into its own texture.
Hence readNextPacket0() must switch to used texture using glEnable() on !core and glBindTexture().
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support via FFMpeg
TODO:
- We may want to refine subtitle PTS handling
- We may want to support bitmapped subtitles
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streams and languages and add convenient switchStream(..) entry.
audio/video/subtitle streams and language metadata is maintained by arrays holding the stream-IDs and language string identifier.
Implementation added in FFMPEGPlayer for these data-sets.
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up warnings and includes (clang).
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don't use tchar.h; Fix compiler warning: Add missing (intptr_t) cast.
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windows, 2 more pixel formats, fail-safe data handling
- add support for ffmpeg 2 / libav 10 -> lavc55_lavf55_lavu52_lavr01
- add support for ffmpeg libswresample (similar to libavresample)
- handle BGRA (GL type) and BGR24 (texture shader)
- Change Camera URI semantics, drop 'host' and use 'path' for camera ID
and use 'query' for options.
- add support for Window's DShow camera selection
- our camera id -> index of list of video-input devices,
this gives us same behavior as w/ Linux
- requires windows libs: strmiids, uuid, ole32, oleaut32
- Compiles w/ MingW64, works w/ libav/ffmpeg
- TODO: test compilation w/ MingW 32bit !
- don't push data to texture if (linesize <= 0)
this may happen due to buggy decoder / setup ..
Tested manually on GNU/Linux x64 and Windows x64:
- GNU/Linux libav 0.8, libav 9, libav 10, ffmpeg 1.2, ffmpeg 2.0
- Windows libav 0.8, libav 9, ffmpeg 2.0
- videos and camera
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version dependent c-files individually and inject object files. ; ffmpeg *register_all() at setStream0(..)
- Use 'dot less' dir/file names
- Compile ffmpeg version dependent c-files individually and inject object files.
- ffmpeg *register_all() at setStream0(..)
- Only register devices if available _and_ camera is requested.
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