fix: streams above 1080p in the single view (#166)

[compot-dev]

Fixes #166 (to be confirmed on the reporter's HY300).

Problem. On a Rockchip HY300 (Android 11, OMX.rk.video_decoder.avc/hevc) a 2304×1296 stream connects, the decoder starts and allocates buffers, but never outputs a frame (no "Resolution update" in the log). 1080p from the same camera plays.

Cause (likely). The decoder is always configured at 1280×720 and learns the real size from the stream. With adaptive playback some hardware decoders only allocate for the configured maximum, so a picture above 1080p never comes out.

Change. In the single view the decoder is told the largest picture it supports, via KEY_MAX_WIDTH/KEY_MAX_HEIGHT (the first supported of 3840×2160, 2560×1920, 2560×1440, 2304×1296). The log says Decoder <name>: pictures up to W×H. The grid stays as before: nine decoders with 4K buffers would not fit in memory.

Version 2.17 (2.15 and 2.16 went to the toy drone PRs #215 and #224; 2.14 was the test build hy300-166-test1).

• Aceline-1: single view and grid still play (1080p, 2560×1920 H.265): single 2560×1920 H.265 at 20 fps (log: pictures up to 3840×2160), 1080p H.264 at 20 fps, grid unchanged, no crash
• Reporter: 2304×1296 H.264 and H.265 on the HY300