FFMPEGMediaPlayer: Handle v-flipped 'bottom-up' pictures ; Refine API doc 'camera ID'

If linesize is < 0, it is not invalid as assumed in commit eca6a5cb1e2beda84dfbafc31ed225e272f4f3fb,
but vertically flipped (bottom-up).

We have to adjust the data pointers, which are moved to the upper end of memory as well
and can proceed as usual.

TODO:
  - Update texture 'mustFlipVertically' to 'false' in this case.
  - Later:
    - Allow updating texture size ..
    - Whole pixel-fmt/texture-lookup-shader association must scale better,
      i.e. extract the 'knowledge' into one class, use a static shader code
      using uniforms instead of hard-coded values .. etc.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/jogl/native/libav/ffmpeg_tool.h b/src/jogl/native/libav/ffmpeg_tool.h
index e4b10f95f..72345fbb7 100644
--- a/src/jogl/native/libav/ffmpeg_tool.h
+++ b/src/jogl/native/libav/ffmpeg_tool.h
@@ -160,7 +160,7 @@ typedef struct {
     enum PixelFormat vPixFmt;    // native decoder fmt
     int32_t          vPTS;       // msec - overall last video PTS
     PTSStats         vPTSStats;
-    int32_t          vTexWidth[AV_NUM_DATA_POINTERS];  // decoded video tex width in bytes for each plane
+    int32_t          vTexWidth[4];  // decoded video tex width in bytes for each plane (max 4)
     int32_t          vWidth;
     int32_t          vHeight;