diff options
author | Peter Maydell <peter.maydell@linaro.org> | 2023-08-24 13:26:01 +0100 |
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committer | Michael Tokarev <mjt@tls.msk.ru> | 2023-09-08 13:08:52 +0300 |
commit | d864cf25924c3b39141574b9f78c2a923b7b8d87 (patch) | |
tree | 374b7c6979dd9cdba566bd52bc1e8872e6b71393 /hw | |
parent | 3202d8e4047d5f4def96b5404633307c86e8db95 (diff) | |
download | qemu-d864cf25924c3b39141574b9f78c2a923b7b8d87.zip qemu-d864cf25924c3b39141574b9f78c2a923b7b8d87.tar.gz qemu-d864cf25924c3b39141574b9f78c2a923b7b8d87.tar.bz2 |
hw/display/xlnx_dp: update comments
Clarify somewhat misleading code comments.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Diffstat (limited to 'hw')
-rw-r--r-- | hw/display/xlnx_dp.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/hw/display/xlnx_dp.c b/hw/display/xlnx_dp.c index 822355e..43c7dd8 100644 --- a/hw/display/xlnx_dp.c +++ b/hw/display/xlnx_dp.c @@ -380,13 +380,16 @@ static inline void xlnx_dp_audio_mix_buffer(XlnxDPState *s) static void xlnx_dp_audio_callback(void *opaque, int avail) { /* - * Get some data from the DPDMA and compute these data. - * Then wait for QEMU's audio subsystem to call this callback. + * Get the individual left and right audio streams from the DPDMA, + * and fill the output buffer with the combined stereo audio data + * adjusted by the volume controls. + * QEMU's audio subsystem will call this callback repeatedly; + * we return the data from the output buffer until it is emptied, + * and then we will read data from the DPDMA again. */ XlnxDPState *s = XLNX_DP(opaque); size_t written = 0; - /* If there are already some data don't get more data. */ if (s->byte_left == 0) { s->audio_data_available[0] = xlnx_dpdma_start_operation(s->dpdma, 4, true); |