diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/audio/virtio-snd.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/hw/audio/virtio-snd.c b/hw/audio/virtio-snd.c index 084890e..31a1942 100644 --- a/hw/audio/virtio-snd.c +++ b/hw/audio/virtio-snd.c @@ -479,6 +479,28 @@ static const char *print_code(uint32_t code) }; /* + * Handles VIRTIO_SND_R_PCM_PREPARE. + * + * @s: VirtIOSound device + * @cmd: The request command queue element from VirtIOSound cmdq field + */ +static void virtio_snd_handle_pcm_prepare(VirtIOSound *s, + virtio_snd_ctrl_command *cmd) +{ + uint32_t stream_id; + size_t msg_sz = iov_to_buf(cmd->elem->out_sg, + cmd->elem->out_num, + sizeof(virtio_snd_hdr), + &stream_id, + sizeof(stream_id)); + + stream_id = le32_to_cpu(stream_id); + cmd->resp.code = msg_sz == sizeof(stream_id) + ? virtio_snd_pcm_prepare(s, stream_id) + : cpu_to_le32(VIRTIO_SND_S_BAD_MSG); +} + +/* * Handles VIRTIO_SND_R_PCM_START. * * @s: VirtIOSound device @@ -569,6 +591,8 @@ process_cmd(VirtIOSound *s, virtio_snd_ctrl_command *cmd) virtio_snd_handle_pcm_set_params(s, cmd); break; case VIRTIO_SND_R_PCM_PREPARE: + virtio_snd_handle_pcm_prepare(s, cmd); + break; case VIRTIO_SND_R_PCM_RELEASE: cmd->resp.code = cpu_to_le32(VIRTIO_SND_S_NOT_SUPP); break; |