diff options
Diffstat (limited to 'main/jpeg_decoder.h')
| -rw-r--r-- | main/jpeg_decoder.h | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/main/jpeg_decoder.h b/main/jpeg_decoder.h index 2ac436d..e8a8504 100644 --- a/main/jpeg_decoder.h +++ b/main/jpeg_decoder.h @@ -23,12 +23,17 @@ void jpeg_decoder_unlock(void); // JPEG_DECODER_MAX_INPUT_BYTES. Caller fills before calling decode. void *jpeg_decoder_input_buffer(void); -// Decode the JPEG sitting in the input buffer. Fills out_bgr888 with a -// pointer to the decoded 24-bit image (3 bytes/pixel, BGR memory order so -// the DSI engine + TC358762 + Pi panel render channels correctly) and -// reports the image's width/height in pixels. The output buffer is owned -// by the decoder — valid only until the next jpeg_decoder_unlock(). -esp_err_t jpeg_decoder_decode(size_t jpeg_len, - void **out_bgr888, +// Decode the JPEG sitting in the input buffer into the caller-provided +// out_buf (must be at least out_cap bytes, ≥ 800*480*3 for a full +// panel-sized frame). Bytes land in BGR memory order so the DSI engine +// + TC358762 + Pi panel render channels correctly. Reports image +// width/height in pixels. +// +// In the /frame hot path the caller passes display_back_buffer() so +// the hardware decoder writes pixels straight into the panel's back +// framebuffer with zero intermediate copies. +esp_err_t jpeg_decoder_decode(size_t jpeg_len, + void *out_buf, + size_t out_cap, uint16_t *out_width, uint16_t *out_height); |