[Spice-devel] [PATCH spice-server 06/18] sound: Rename {Record, Playback}Channel to *ChannelClient

Uri Lublin uril at redhat.com
Thu Nov 24 14:01:42 UTC 2016


On 11/23/2016 08:07 PM, Frediano Ziglio wrote:
> Make easier to understand that they refer to client and not
> all channel.
>
> Specifically:
> - RecordChannel -> RecordChannelClient
> - PlaybackChannel -> PlaybackChannelClient
> - playback_channel -> playback_client
> - record_channel -> record_client

Maybe better playback_channel_client (or pcc)
and          record_channel_client   (rcc not good here)

Also maybe replace
   SndChannelClient *channel ->  SndChannelClient *scc (sound channel 
client)

Otherwise, looks good.

Uri.

>
> Signed-off-by: Frediano Ziglio <fziglio at redhat.com>
> ---
>  server/sound.c | 364 ++++++++++++++++++++++++++++-----------------------------
>  1 file changed, 182 insertions(+), 182 deletions(-)
>
> diff --git a/server/sound.c b/server/sound.c
> index 29e8df2..256b3da 100644
> --- a/server/sound.c
> +++ b/server/sound.c
> @@ -116,17 +116,17 @@ struct SndChannelClient {
>      snd_channel_cleanup_channel_proc cleanup;
>  };
>
> -typedef struct PlaybackChannel PlaybackChannel;
> +typedef struct PlaybackChannelClient PlaybackChannelClient;
>
>  typedef struct AudioFrame AudioFrame;
>  struct AudioFrame {
>      uint32_t time;
>      uint32_t samples[SND_CODEC_MAX_FRAME_SIZE];
> -    PlaybackChannel *channel;
> +    PlaybackChannelClient *channel;
>      AudioFrame *next;
>  };
>
> -struct PlaybackChannel {
> +struct PlaybackChannelClient {
>      SndChannelClient base;
>      AudioFrame frames[3];
>      AudioFrame *free_frames;
> @@ -163,7 +163,7 @@ struct SpiceRecordState {
>      struct SndChannel worker;
>  };
>
> -typedef struct RecordChannel {
> +typedef struct RecordChannelClient {
>      SndChannelClient base;
>      uint32_t samples[RECORD_SAMPLES_SIZE];
>      uint32_t write_pos;
> @@ -173,7 +173,7 @@ typedef struct RecordChannel {
>      uint32_t start_time;
>      SndCodec codec;
>      uint8_t  decode_buf[SND_CODEC_MAX_FRAME_BYTES];
> -} RecordChannel;
> +} RecordChannelClient;
>
>  /* A list of all Spice{Playback,Record}State objects */
>  static SndChannel *snd_channels;
> @@ -233,20 +233,20 @@ static void snd_disconnect_channel(SndChannelClient *channel)
>      worker->connection = NULL;
>  }
>
> -static void snd_playback_free_frame(PlaybackChannel *playback_channel, AudioFrame *frame)
> +static void snd_playback_free_frame(PlaybackChannelClient *playback_client, AudioFrame *frame)
>  {
> -    frame->channel = playback_channel;
> -    frame->next = playback_channel->free_frames;
> -    playback_channel->free_frames = frame;
> +    frame->channel = playback_client;
> +    frame->next = playback_client->free_frames;
> +    playback_client->free_frames = frame;
>  }
>
>  static void snd_playback_on_message_done(SndChannelClient *channel)
>  {
> -    PlaybackChannel *playback_channel = (PlaybackChannel *)channel;
> -    if (playback_channel->in_progress) {
> -        snd_playback_free_frame(playback_channel, playback_channel->in_progress);
> -        playback_channel->in_progress = NULL;
> -        if (playback_channel->pending_frame) {
> +    PlaybackChannelClient *playback_client = (PlaybackChannelClient *)channel;
> +    if (playback_client->in_progress) {
> +        snd_playback_free_frame(playback_client, playback_client->in_progress);
> +        playback_client->in_progress = NULL;
> +        if (playback_client->pending_frame) {
>              channel->command |= SND_PLAYBACK_PCM_MASK;
>          }
>      }
> @@ -311,7 +311,7 @@ static int snd_send_data(SndChannelClient *channel)
>      return TRUE;
>  }
>
> -static int snd_record_handle_write(RecordChannel *record_channel, size_t size, void *message)
> +static int snd_record_handle_write(RecordChannelClient *record_client, size_t size, void *message)
>  {
>      SpiceMsgcRecordPacket *packet;
>      uint32_t write_pos;
> @@ -319,39 +319,39 @@ static int snd_record_handle_write(RecordChannel *record_channel, size_t size, v
>      uint32_t len;
>      uint32_t now;
>
> -    if (!record_channel) {
> +    if (!record_client) {
>          return FALSE;
>      }
>
>      packet = (SpiceMsgcRecordPacket *)message;
>
> -    if (record_channel->mode == SPICE_AUDIO_DATA_MODE_RAW) {
> +    if (record_client->mode == SPICE_AUDIO_DATA_MODE_RAW) {
>          data = (uint32_t *)packet->data;
>          size = packet->data_size >> 2;
>          size = MIN(size, RECORD_SAMPLES_SIZE);
>       } else {
>          int decode_size;
> -        decode_size = sizeof(record_channel->decode_buf);
> -        if (snd_codec_decode(record_channel->codec, packet->data, packet->data_size,
> -                    record_channel->decode_buf, &decode_size) != SND_CODEC_OK)
> +        decode_size = sizeof(record_client->decode_buf);
> +        if (snd_codec_decode(record_client->codec, packet->data, packet->data_size,
> +                    record_client->decode_buf, &decode_size) != SND_CODEC_OK)
>              return FALSE;
> -        data = (uint32_t *) record_channel->decode_buf;
> +        data = (uint32_t *) record_client->decode_buf;
>          size = decode_size >> 2;
>      }
>
> -    write_pos = record_channel->write_pos % RECORD_SAMPLES_SIZE;
> -    record_channel->write_pos += size;
> +    write_pos = record_client->write_pos % RECORD_SAMPLES_SIZE;
> +    record_client->write_pos += size;
>      len = RECORD_SAMPLES_SIZE - write_pos;
>      now = MIN(len, size);
>      size -= now;
> -    memcpy(record_channel->samples + write_pos, data, now << 2);
> +    memcpy(record_client->samples + write_pos, data, now << 2);
>
>      if (size) {
> -        memcpy(record_channel->samples, data + now, size << 2);
> +        memcpy(record_client->samples, data + now, size << 2);
>      }
>
> -    if (record_channel->write_pos - record_channel->read_pos > RECORD_SAMPLES_SIZE) {
> -        record_channel->read_pos = record_channel->write_pos - RECORD_SAMPLES_SIZE;
> +    if (record_client->write_pos - record_client->read_pos > RECORD_SAMPLES_SIZE) {
> +        record_client->read_pos = record_client->write_pos - RECORD_SAMPLES_SIZE;
>      }
>      return TRUE;
>  }
> @@ -374,41 +374,41 @@ static int snd_playback_handle_message(SndChannelClient *channel, size_t size, u
>
>  static int snd_record_handle_message(SndChannelClient *channel, size_t size, uint32_t type, void *message)
>  {
> -    RecordChannel *record_channel = (RecordChannel *)channel;
> +    RecordChannelClient *record_client = (RecordChannelClient *)channel;
>
>      if (!channel) {
>          return FALSE;
>      }
>      switch (type) {
>      case SPICE_MSGC_RECORD_DATA:
> -        return snd_record_handle_write((RecordChannel *)channel, size, message);
> +        return snd_record_handle_write((RecordChannelClient *)channel, size, message);
>      case SPICE_MSGC_RECORD_MODE: {
>          SpiceMsgcRecordMode *mode = (SpiceMsgcRecordMode *)message;
>          SndChannel *worker = channel->worker;
> -        record_channel->mode_time = mode->time;
> +        record_client->mode_time = mode->time;
>          if (mode->mode != SPICE_AUDIO_DATA_MODE_RAW) {
>              if (snd_codec_is_capable(mode->mode, worker->frequency)) {
> -                if (snd_codec_create(&record_channel->codec, mode->mode, worker->frequency,
> +                if (snd_codec_create(&record_client->codec, mode->mode, worker->frequency,
>                                       SND_CODEC_DECODE) == SND_CODEC_OK) {
> -                    record_channel->mode = mode->mode;
> +                    record_client->mode = mode->mode;
>                  } else {
>                      spice_printerr("create decoder failed");
>                      return FALSE;
>                  }
>              }
>              else {
> -                spice_printerr("unsupported mode %d", record_channel->mode);
> +                spice_printerr("unsupported mode %d", record_client->mode);
>                  return FALSE;
>              }
>          }
>          else
> -            record_channel->mode = mode->mode;
> +            record_client->mode = mode->mode;
>          break;
>      }
>
>      case SPICE_MSGC_RECORD_START_MARK: {
>          SpiceMsgcRecordStartMark *mark = (SpiceMsgcRecordStartMark *)message;
> -        record_channel->start_time = mark->time;
> +        record_client->start_time = mark->time;
>          break;
>      }
>      case SPICE_MSGC_DISCONNECTING:
> @@ -562,7 +562,7 @@ static int snd_channel_send_migrate(SndChannelClient *channel)
>      return snd_begin_send_message(channel);
>  }
>
> -static int snd_playback_send_migrate(PlaybackChannel *channel)
> +static int snd_playback_send_migrate(PlaybackChannelClient *channel)
>  {
>      return snd_channel_send_migrate(&channel->base);
>  }
> @@ -591,9 +591,9 @@ static int snd_send_volume(SndChannelClient *channel, uint32_t cap, int msg)
>      return snd_begin_send_message(channel);
>  }
>
> -static int snd_playback_send_volume(PlaybackChannel *playback_channel)
> +static int snd_playback_send_volume(PlaybackChannelClient *playback_client)
>  {
> -    return snd_send_volume(&playback_channel->base, SPICE_PLAYBACK_CAP_VOLUME,
> +    return snd_send_volume(&playback_client->base, SPICE_PLAYBACK_CAP_VOLUME,
>                             SPICE_MSG_PLAYBACK_VOLUME);
>  }
>
> @@ -615,29 +615,29 @@ static int snd_send_mute(SndChannelClient *channel, uint32_t cap, int msg)
>      return snd_begin_send_message(channel);
>  }
>
> -static int snd_playback_send_mute(PlaybackChannel *playback_channel)
> +static int snd_playback_send_mute(PlaybackChannelClient *playback_client)
>  {
> -    return snd_send_mute(&playback_channel->base, SPICE_PLAYBACK_CAP_VOLUME,
> +    return snd_send_mute(&playback_client->base, SPICE_PLAYBACK_CAP_VOLUME,
>                           SPICE_MSG_PLAYBACK_MUTE);
>  }
>
> -static int snd_playback_send_latency(PlaybackChannel *playback_channel)
> +static int snd_playback_send_latency(PlaybackChannelClient *playback_client)
>  {
> -    SndChannelClient *channel = &playback_channel->base;
> +    SndChannelClient *channel = &playback_client->base;
>      SpiceMsgPlaybackLatency latency_msg;
>
> -    spice_debug("latency %u", playback_channel->latency);
> +    spice_debug("latency %u", playback_client->latency);
>      if (!snd_reset_send_data(channel, SPICE_MSG_PLAYBACK_LATENCY)) {
>          return FALSE;
>      }
> -    latency_msg.latency_ms = playback_channel->latency;
> +    latency_msg.latency_ms = playback_client->latency;
>      spice_marshall_msg_playback_latency(channel->send_data.marshaller, &latency_msg);
>
>      return snd_begin_send_message(channel);
>  }
> -static int snd_playback_send_start(PlaybackChannel *playback_channel)
> +static int snd_playback_send_start(PlaybackChannelClient *playback_client)
>  {
> -    SndChannelClient *channel = (SndChannelClient *)playback_channel;
> +    SndChannelClient *channel = (SndChannelClient *)playback_client;
>      SpiceMsgPlaybackStart start;
>
>      if (!snd_reset_send_data(channel, SPICE_MSG_PLAYBACK_START)) {
> @@ -654,9 +654,9 @@ static int snd_playback_send_start(PlaybackChannel *playback_channel)
>      return snd_begin_send_message(channel);
>  }
>
> -static int snd_playback_send_stop(PlaybackChannel *playback_channel)
> +static int snd_playback_send_stop(PlaybackChannelClient *playback_client)
>  {
> -    SndChannelClient *channel = (SndChannelClient *)playback_channel;
> +    SndChannelClient *channel = (SndChannelClient *)playback_client;
>
>      if (!snd_reset_send_data(channel, SPICE_MSG_PLAYBACK_STOP)) {
>          return FALSE;
> @@ -665,20 +665,20 @@ static int snd_playback_send_stop(PlaybackChannel *playback_channel)
>      return snd_begin_send_message(channel);
>  }
>
> -static int snd_playback_send_ctl(PlaybackChannel *playback_channel)
> +static int snd_playback_send_ctl(PlaybackChannelClient *playback_client)
>  {
> -    SndChannelClient *channel = (SndChannelClient *)playback_channel;
> +    SndChannelClient *channel = (SndChannelClient *)playback_client;
>
>      if ((channel->client_active = channel->active)) {
> -        return snd_playback_send_start(playback_channel);
> +        return snd_playback_send_start(playback_client);
>      } else {
> -        return snd_playback_send_stop(playback_channel);
> +        return snd_playback_send_stop(playback_client);
>      }
>  }
>
> -static int snd_record_send_start(RecordChannel *record_channel)
> +static int snd_record_send_start(RecordChannelClient *record_client)
>  {
> -    SndChannelClient *channel = (SndChannelClient *)record_channel;
> +    SndChannelClient *channel = (SndChannelClient *)record_client;
>      SpiceMsgRecordStart start;
>
>      if (!snd_reset_send_data(channel, SPICE_MSG_RECORD_START)) {
> @@ -694,9 +694,9 @@ static int snd_record_send_start(RecordChannel *record_channel)
>      return snd_begin_send_message(channel);
>  }
>
> -static int snd_record_send_stop(RecordChannel *record_channel)
> +static int snd_record_send_stop(RecordChannelClient *record_client)
>  {
> -    SndChannelClient *channel = (SndChannelClient *)record_channel;
> +    SndChannelClient *channel = (SndChannelClient *)record_client;
>
>      if (!snd_reset_send_data(channel, SPICE_MSG_RECORD_STOP)) {
>          return FALSE;
> @@ -705,41 +705,41 @@ static int snd_record_send_stop(RecordChannel *record_channel)
>      return snd_begin_send_message(channel);
>  }
>
> -static int snd_record_send_ctl(RecordChannel *record_channel)
> +static int snd_record_send_ctl(RecordChannelClient *record_client)
>  {
> -    SndChannelClient *channel = (SndChannelClient *)record_channel;
> +    SndChannelClient *channel = (SndChannelClient *)record_client;
>
>      if ((channel->client_active = channel->active)) {
> -        return snd_record_send_start(record_channel);
> +        return snd_record_send_start(record_client);
>      } else {
> -        return snd_record_send_stop(record_channel);
> +        return snd_record_send_stop(record_client);
>      }
>  }
>
> -static int snd_record_send_volume(RecordChannel *record_channel)
> +static int snd_record_send_volume(RecordChannelClient *record_client)
>  {
> -    return snd_send_volume(&record_channel->base, SPICE_RECORD_CAP_VOLUME,
> +    return snd_send_volume(&record_client->base, SPICE_RECORD_CAP_VOLUME,
>                             SPICE_MSG_RECORD_VOLUME);
>  }
>
> -static int snd_record_send_mute(RecordChannel *record_channel)
> +static int snd_record_send_mute(RecordChannelClient *record_client)
>  {
> -    return snd_send_mute(&record_channel->base, SPICE_RECORD_CAP_VOLUME,
> +    return snd_send_mute(&record_client->base, SPICE_RECORD_CAP_VOLUME,
>                           SPICE_MSG_RECORD_MUTE);
>  }
>
> -static int snd_record_send_migrate(RecordChannel *record_channel)
> +static int snd_record_send_migrate(RecordChannelClient *record_client)
>  {
>      /* No need for migration data: if recording has started before migration,
>       * the client receives RECORD_STOP from the src before the migration completion
>       * notification (when the vm is stopped).
>       * Afterwards, when the vm starts on the dest, the client receives RECORD_START. */
> -    return snd_channel_send_migrate(&record_channel->base);
> +    return snd_channel_send_migrate(&record_client->base);
>  }
>
> -static int snd_playback_send_write(PlaybackChannel *playback_channel)
> +static int snd_playback_send_write(PlaybackChannelClient *playback_client)
>  {
> -    SndChannelClient *channel = (SndChannelClient *)playback_channel;
> +    SndChannelClient *channel = (SndChannelClient *)playback_client;
>      AudioFrame *frame;
>      SpiceMsgPlaybackPacket msg;
>
> @@ -747,41 +747,41 @@ static int snd_playback_send_write(PlaybackChannel *playback_channel)
>          return FALSE;
>      }
>
> -    frame = playback_channel->in_progress;
> +    frame = playback_client->in_progress;
>      msg.time = frame->time;
>
>      spice_marshall_msg_playback_data(channel->send_data.marshaller, &msg);
>
> -    if (playback_channel->mode == SPICE_AUDIO_DATA_MODE_RAW) {
> +    if (playback_client->mode == SPICE_AUDIO_DATA_MODE_RAW) {
>          spice_marshaller_add_ref(channel->send_data.marshaller,
>                                   (uint8_t *)frame->samples,
> -                                 snd_codec_frame_size(playback_channel->codec) * sizeof(frame->samples[0]));
> +                                 snd_codec_frame_size(playback_client->codec) * sizeof(frame->samples[0]));
>      }
>      else {
> -        int n = sizeof(playback_channel->encode_buf);
> -        if (snd_codec_encode(playback_channel->codec, (uint8_t *) frame->samples,
> -                                    snd_codec_frame_size(playback_channel->codec) * sizeof(frame->samples[0]),
> -                                    playback_channel->encode_buf, &n) != SND_CODEC_OK) {
> +        int n = sizeof(playback_client->encode_buf);
> +        if (snd_codec_encode(playback_client->codec, (uint8_t *) frame->samples,
> +                                    snd_codec_frame_size(playback_client->codec) * sizeof(frame->samples[0]),
> +                                    playback_client->encode_buf, &n) != SND_CODEC_OK) {
>              spice_printerr("encode failed");
>              snd_disconnect_channel(channel);
>              return FALSE;
>          }
> -        spice_marshaller_add_ref(channel->send_data.marshaller, playback_channel->encode_buf, n);
> +        spice_marshaller_add_ref(channel->send_data.marshaller, playback_client->encode_buf, n);
>      }
>
>      return snd_begin_send_message(channel);
>  }
>
> -static int playback_send_mode(PlaybackChannel *playback_channel)
> +static int playback_send_mode(PlaybackChannelClient *playback_client)
>  {
> -    SndChannelClient *channel = (SndChannelClient *)playback_channel;
> +    SndChannelClient *channel = (SndChannelClient *)playback_client;
>      SpiceMsgPlaybackMode mode;
>
>      if (!snd_reset_send_data(channel, SPICE_MSG_PLAYBACK_MODE)) {
>          return FALSE;
>      }
>      mode.time = reds_get_mm_time();
> -    mode.mode = playback_channel->mode;
> +    mode.mode = playback_client->mode;
>      spice_marshall_msg_playback_mode(channel->send_data.marshaller, &mode);
>
>      return snd_begin_send_message(channel);
> @@ -789,51 +789,51 @@ static int playback_send_mode(PlaybackChannel *playback_channel)
>
>  static void snd_playback_send(void* data)
>  {
> -    PlaybackChannel *playback_channel = (PlaybackChannel*)data;
> -    SndChannelClient *channel = (SndChannelClient*)playback_channel;
> +    PlaybackChannelClient *playback_client = (PlaybackChannelClient*)data;
> +    SndChannelClient *channel = (SndChannelClient*)playback_client;
>
> -    if (!playback_channel || !snd_send_data(data)) {
> +    if (!playback_client || !snd_send_data(data)) {
>          return;
>      }
>
>      while (channel->command) {
>          if (channel->command & SND_PLAYBACK_MODE_MASK) {
> -            if (!playback_send_mode(playback_channel)) {
> +            if (!playback_send_mode(playback_client)) {
>                  return;
>              }
>              channel->command &= ~SND_PLAYBACK_MODE_MASK;
>          }
>          if (channel->command & SND_PLAYBACK_PCM_MASK) {
> -            spice_assert(!playback_channel->in_progress && playback_channel->pending_frame);
> -            playback_channel->in_progress = playback_channel->pending_frame;
> -            playback_channel->pending_frame = NULL;
> +            spice_assert(!playback_client->in_progress && playback_client->pending_frame);
> +            playback_client->in_progress = playback_client->pending_frame;
> +            playback_client->pending_frame = NULL;
>              channel->command &= ~SND_PLAYBACK_PCM_MASK;
> -            if (!snd_playback_send_write(playback_channel)) {
> +            if (!snd_playback_send_write(playback_client)) {
>                  spice_printerr("snd_send_playback_write failed");
>                  return;
>              }
>          }
>          if (channel->command & SND_CTRL_MASK) {
> -            if (!snd_playback_send_ctl(playback_channel)) {
> +            if (!snd_playback_send_ctl(playback_client)) {
>                  return;
>              }
>              channel->command &= ~SND_CTRL_MASK;
>          }
>          if (channel->command & SND_VOLUME_MASK) {
> -            if (!snd_playback_send_volume(playback_channel) ||
> -                !snd_playback_send_mute(playback_channel)) {
> +            if (!snd_playback_send_volume(playback_client) ||
> +                !snd_playback_send_mute(playback_client)) {
>                  return;
>              }
>              channel->command &= ~SND_VOLUME_MASK;
>          }
>          if (channel->command & SND_MIGRATE_MASK) {
> -            if (!snd_playback_send_migrate(playback_channel)) {
> +            if (!snd_playback_send_migrate(playback_client)) {
>                  return;
>              }
>              channel->command &= ~SND_MIGRATE_MASK;
>          }
>          if (channel->command & SND_PLAYBACK_LATENCY_MASK) {
> -            if (!snd_playback_send_latency(playback_channel)) {
> +            if (!snd_playback_send_latency(playback_client)) {
>                  return;
>              }
>              channel->command &= ~SND_PLAYBACK_LATENCY_MASK;
> @@ -843,29 +843,29 @@ static void snd_playback_send(void* data)
>
>  static void snd_record_send(void* data)
>  {
> -    RecordChannel *record_channel = (RecordChannel*)data;
> -    SndChannelClient *channel = (SndChannelClient*)record_channel;
> +    RecordChannelClient *record_client = (RecordChannelClient*)data;
> +    SndChannelClient *channel = (SndChannelClient*)record_client;
>
> -    if (!record_channel || !snd_send_data(data)) {
> +    if (!record_client || !snd_send_data(data)) {
>          return;
>      }
>
>      while (channel->command) {
>          if (channel->command & SND_CTRL_MASK) {
> -            if (!snd_record_send_ctl(record_channel)) {
> +            if (!snd_record_send_ctl(record_client)) {
>                  return;
>              }
>              channel->command &= ~SND_CTRL_MASK;
>          }
>          if (channel->command & SND_VOLUME_MASK) {
> -            if (!snd_record_send_volume(record_channel) ||
> -                !snd_record_send_mute(record_channel)) {
> +            if (!snd_record_send_volume(record_client) ||
> +                !snd_record_send_mute(record_client)) {
>                  return;
>              }
>              channel->command &= ~SND_VOLUME_MASK;
>          }
>          if (channel->command & SND_MIGRATE_MASK) {
> -            if (!snd_record_send_migrate(record_channel)) {
> +            if (!snd_record_send_migrate(record_client)) {
>                  return;
>              }
>              channel->command &= ~SND_MIGRATE_MASK;
> @@ -1000,7 +1000,7 @@ SPICE_GNUC_VISIBLE void spice_server_playback_set_volume(SpicePlaybackInstance *
>  {
>      SpiceVolumeState *st = &sin->st->worker.volume;
>      SndChannelClient *channel = sin->st->worker.connection;
> -    PlaybackChannel *playback_channel = SPICE_CONTAINEROF(channel, PlaybackChannel, base);
> +    PlaybackChannelClient *playback_client = SPICE_CONTAINEROF(channel, PlaybackChannelClient, base);
>
>      st->volume_nchannels = nchannels;
>      free(st->volume);
> @@ -1009,21 +1009,21 @@ SPICE_GNUC_VISIBLE void spice_server_playback_set_volume(SpicePlaybackInstance *
>      if (!channel || nchannels == 0)
>          return;
>
> -    snd_playback_send_volume(playback_channel);
> +    snd_playback_send_volume(playback_client);
>  }
>
>  SPICE_GNUC_VISIBLE void spice_server_playback_set_mute(SpicePlaybackInstance *sin, uint8_t mute)
>  {
>      SpiceVolumeState *st = &sin->st->worker.volume;
>      SndChannelClient *channel = sin->st->worker.connection;
> -    PlaybackChannel *playback_channel = SPICE_CONTAINEROF(channel, PlaybackChannel, base);
> +    PlaybackChannelClient *playback_client = SPICE_CONTAINEROF(channel, PlaybackChannelClient, base);
>
>      st->mute = mute;
>
>      if (!channel)
>          return;
>
> -    snd_playback_send_mute(playback_channel);
> +    snd_playback_send_mute(playback_client);
>  }
>
>  static void snd_playback_start(SndChannel *worker)
> @@ -1052,26 +1052,26 @@ SPICE_GNUC_VISIBLE void spice_server_playback_start(SpicePlaybackInstance *sin)
>  SPICE_GNUC_VISIBLE void spice_server_playback_stop(SpicePlaybackInstance *sin)
>  {
>      SndChannelClient *channel = sin->st->worker.connection;
> -    PlaybackChannel *playback_channel = SPICE_CONTAINEROF(channel, PlaybackChannel, base);
> +    PlaybackChannelClient *playback_client = SPICE_CONTAINEROF(channel, PlaybackChannelClient, base);
>
>      sin->st->worker.active = 0;
>      if (!channel)
>          return;
> -    spice_assert(playback_channel->base.active);
> +    spice_assert(playback_client->base.active);
>      reds_enable_mm_time(snd_channel_get_server(channel));
> -    playback_channel->base.active = FALSE;
> -    if (playback_channel->base.client_active) {
> -        snd_set_command(&playback_channel->base, SND_CTRL_MASK);
> -        snd_playback_send(&playback_channel->base);
> +    playback_client->base.active = FALSE;
> +    if (playback_client->base.client_active) {
> +        snd_set_command(&playback_client->base, SND_CTRL_MASK);
> +        snd_playback_send(&playback_client->base);
>      } else {
> -        playback_channel->base.command &= ~SND_CTRL_MASK;
> -        playback_channel->base.command &= ~SND_PLAYBACK_PCM_MASK;
> -
> -        if (playback_channel->pending_frame) {
> -            spice_assert(!playback_channel->in_progress);
> -            snd_playback_free_frame(playback_channel,
> -                                    playback_channel->pending_frame);
> -            playback_channel->pending_frame = NULL;
> +        playback_client->base.command &= ~SND_CTRL_MASK;
> +        playback_client->base.command &= ~SND_PLAYBACK_PCM_MASK;
> +
> +        if (playback_client->pending_frame) {
> +            spice_assert(!playback_client->in_progress);
> +            snd_playback_free_frame(playback_client,
> +                                    playback_client->pending_frame);
> +            playback_client->pending_frame = NULL;
>          }
>      }
>  }
> @@ -1080,44 +1080,44 @@ SPICE_GNUC_VISIBLE void spice_server_playback_get_buffer(SpicePlaybackInstance *
>                                                           uint32_t **frame, uint32_t *num_samples)
>  {
>      SndChannelClient *channel = sin->st->worker.connection;
> -    PlaybackChannel *playback_channel = SPICE_CONTAINEROF(channel, PlaybackChannel, base);
> +    PlaybackChannelClient *playback_client = SPICE_CONTAINEROF(channel, PlaybackChannelClient, base);
>
> -    if (!channel || !playback_channel->free_frames) {
> +    if (!channel || !playback_client->free_frames) {
>          *frame = NULL;
>          *num_samples = 0;
>          return;
>      }
> -    spice_assert(playback_channel->base.active);
> +    spice_assert(playback_client->base.active);
>      snd_channel_ref(channel);
>
> -    *frame = playback_channel->free_frames->samples;
> -    playback_channel->free_frames = playback_channel->free_frames->next;
> -    *num_samples = snd_codec_frame_size(playback_channel->codec);
> +    *frame = playback_client->free_frames->samples;
> +    playback_client->free_frames = playback_client->free_frames->next;
> +    *num_samples = snd_codec_frame_size(playback_client->codec);
>  }
>
>  SPICE_GNUC_VISIBLE void spice_server_playback_put_samples(SpicePlaybackInstance *sin, uint32_t *samples)
>  {
> -    PlaybackChannel *playback_channel;
> +    PlaybackChannelClient *playback_client;
>      AudioFrame *frame;
>
>      frame = SPICE_CONTAINEROF(samples, AudioFrame, samples[0]);
> -    playback_channel = frame->channel;
> -    spice_assert(playback_channel);
> -    if (!snd_channel_unref(&playback_channel->base) ||
> -        sin->st->worker.connection != &playback_channel->base) {
> +    playback_client = frame->channel;
> +    spice_assert(playback_client);
> +    if (!snd_channel_unref(&playback_client->base) ||
> +        sin->st->worker.connection != &playback_client->base) {
>          /* lost last reference, channel has been destroyed previously */
>          spice_info("audio samples belong to a disconnected channel");
>          return;
>      }
> -    spice_assert(playback_channel->base.active);
> +    spice_assert(playback_client->base.active);
>
> -    if (playback_channel->pending_frame) {
> -        snd_playback_free_frame(playback_channel, playback_channel->pending_frame);
> +    if (playback_client->pending_frame) {
> +        snd_playback_free_frame(playback_client, playback_client->pending_frame);
>      }
>      frame->time = reds_get_mm_time();
> -    playback_channel->pending_frame = frame;
> -    snd_set_command(&playback_channel->base, SND_PLAYBACK_PCM_MASK);
> -    snd_playback_send(&playback_channel->base);
> +    playback_client->pending_frame = frame;
> +    snd_set_command(&playback_client->base, SND_PLAYBACK_PCM_MASK);
> +    snd_playback_send(&playback_client->base);
>  }
>
>  void snd_set_playback_latency(RedClient *client, uint32_t latency)
> @@ -1132,7 +1132,7 @@ void snd_set_playback_latency(RedClient *client, uint32_t latency)
>
>              if (red_channel_client_test_remote_cap(now->connection->channel_client,
>                  SPICE_PLAYBACK_CAP_LATENCY)) {
> -                PlaybackChannel* playback = (PlaybackChannel*)now->connection;
> +                PlaybackChannelClient* playback = (PlaybackChannelClient*)now->connection;
>
>                  playback->latency = latency;
>                  snd_set_command(now->connection, SND_PLAYBACK_LATENCY_MASK);
> @@ -1180,13 +1180,13 @@ static void on_new_playback_channel(SndChannel *worker, SndChannelClient *snd_ch
>
>  static void snd_playback_cleanup(SndChannelClient *channel)
>  {
> -    PlaybackChannel *playback_channel = SPICE_CONTAINEROF(channel, PlaybackChannel, base);
> +    PlaybackChannelClient *playback_client = SPICE_CONTAINEROF(channel, PlaybackChannelClient, base);
>
> -    if (playback_channel->base.active) {
> +    if (playback_client->base.active) {
>          reds_enable_mm_time(snd_channel_get_server(channel));
>      }
>
> -    snd_codec_destroy(&playback_channel->codec);
> +    snd_codec_destroy(&playback_client->codec);
>  }
>
>  static void snd_set_playback_peer(RedChannel *channel, RedClient *client, RedsStream *stream,
> @@ -1194,12 +1194,12 @@ static void snd_set_playback_peer(RedChannel *channel, RedClient *client, RedsSt
>                                    int num_caps, uint32_t *caps)
>  {
>      SndChannel *worker = g_object_get_data(G_OBJECT(channel), "sound-worker");
> -    PlaybackChannel *playback_channel;
> +    PlaybackChannelClient *playback_client;
>
>      snd_disconnect_channel(worker->connection);
>
> -    if (!(playback_channel = (PlaybackChannel *)__new_channel(worker,
> -                                                              sizeof(*playback_channel),
> +    if (!(playback_client = (PlaybackChannelClient *)__new_channel(worker,
> +                                                              sizeof(*playback_client),
>                                                                SPICE_CHANNEL_PLAYBACK,
>                                                                client,
>                                                                stream,
> @@ -1212,30 +1212,30 @@ static void snd_set_playback_peer(RedChannel *channel, RedClient *client, RedsSt
>                                                                caps, num_caps))) {
>          return;
>      }
> -    snd_playback_free_frame(playback_channel, &playback_channel->frames[0]);
> -    snd_playback_free_frame(playback_channel, &playback_channel->frames[1]);
> -    snd_playback_free_frame(playback_channel, &playback_channel->frames[2]);
> +    snd_playback_free_frame(playback_client, &playback_client->frames[0]);
> +    snd_playback_free_frame(playback_client, &playback_client->frames[1]);
> +    snd_playback_free_frame(playback_client, &playback_client->frames[2]);
>
> -    int client_can_celt = red_channel_client_test_remote_cap(playback_channel->base.channel_client,
> +    int client_can_celt = red_channel_client_test_remote_cap(playback_client->base.channel_client,
>                                            SPICE_PLAYBACK_CAP_CELT_0_5_1);
> -    int client_can_opus = red_channel_client_test_remote_cap(playback_channel->base.channel_client,
> +    int client_can_opus = red_channel_client_test_remote_cap(playback_client->base.channel_client,
>                                            SPICE_PLAYBACK_CAP_OPUS);
>      int playback_compression =
>          reds_config_get_playback_compression(red_channel_get_server(channel));
>      int desired_mode = snd_desired_audio_mode(playback_compression, worker->frequency,
>                                                client_can_celt, client_can_opus);
> -    playback_channel->mode = SPICE_AUDIO_DATA_MODE_RAW;
> +    playback_client->mode = SPICE_AUDIO_DATA_MODE_RAW;
>      if (desired_mode != SPICE_AUDIO_DATA_MODE_RAW) {
> -        if (snd_codec_create(&playback_channel->codec, desired_mode, worker->frequency,
> +        if (snd_codec_create(&playback_client->codec, desired_mode, worker->frequency,
>                               SND_CODEC_ENCODE) == SND_CODEC_OK) {
> -            playback_channel->mode = desired_mode;
> +            playback_client->mode = desired_mode;
>          } else {
>              spice_printerr("create encoder failed");
>          }
>      }
>
>      if (!red_client_during_migrate_at_target(client)) {
> -        on_new_playback_channel(worker, &playback_channel->base);
> +        on_new_playback_channel(worker, &playback_client->base);
>      }
>
>      if (worker->active) {
> @@ -1267,7 +1267,7 @@ SPICE_GNUC_VISIBLE void spice_server_record_set_volume(SpiceRecordInstance *sin,
>  {
>      SpiceVolumeState *st = &sin->st->worker.volume;
>      SndChannelClient *channel = sin->st->worker.connection;
> -    RecordChannel *record_channel = SPICE_CONTAINEROF(channel, RecordChannel, base);
> +    RecordChannelClient *record_client = SPICE_CONTAINEROF(channel, RecordChannelClient, base);
>
>      st->volume_nchannels = nchannels;
>      free(st->volume);
> @@ -1276,33 +1276,33 @@ SPICE_GNUC_VISIBLE void spice_server_record_set_volume(SpiceRecordInstance *sin,
>      if (!channel || nchannels == 0)
>          return;
>
> -    snd_record_send_volume(record_channel);
> +    snd_record_send_volume(record_client);
>  }
>
>  SPICE_GNUC_VISIBLE void spice_server_record_set_mute(SpiceRecordInstance *sin, uint8_t mute)
>  {
>      SpiceVolumeState *st = &sin->st->worker.volume;
>      SndChannelClient *channel = sin->st->worker.connection;
> -    RecordChannel *record_channel = SPICE_CONTAINEROF(channel, RecordChannel, base);
> +    RecordChannelClient *record_client = SPICE_CONTAINEROF(channel, RecordChannelClient, base);
>
>      st->mute = mute;
>
>      if (!channel)
>          return;
>
> -    snd_record_send_mute(record_channel);
> +    snd_record_send_mute(record_client);
>  }
>
>  static void snd_record_start(SndChannel *worker)
>  {
>      SndChannelClient *channel = worker->connection;
> -    RecordChannel *record_channel = SPICE_CONTAINEROF(channel, RecordChannel, base);
> +    RecordChannelClient *record_client = SPICE_CONTAINEROF(channel, RecordChannelClient, base);
>
>      worker->active = 1;
>      if (!channel)
>          return;
>      spice_assert(!channel->active);
> -    record_channel->read_pos = record_channel->write_pos = 0;   //todo: improve by
> +    record_client->read_pos = record_client->write_pos = 0;   //todo: improve by
>                                                                  //stream generation
>      channel->active = TRUE;
>      if (!channel->client_active) {
> @@ -1321,18 +1321,18 @@ SPICE_GNUC_VISIBLE void spice_server_record_start(SpiceRecordInstance *sin)
>  SPICE_GNUC_VISIBLE void spice_server_record_stop(SpiceRecordInstance *sin)
>  {
>      SndChannelClient *channel = sin->st->worker.connection;
> -    RecordChannel *record_channel = SPICE_CONTAINEROF(channel, RecordChannel, base);
> +    RecordChannelClient *record_client = SPICE_CONTAINEROF(channel, RecordChannelClient, base);
>
>      sin->st->worker.active = 0;
>      if (!channel)
>          return;
> -    spice_assert(record_channel->base.active);
> -    record_channel->base.active = FALSE;
> -    if (record_channel->base.client_active) {
> -        snd_set_command(&record_channel->base, SND_CTRL_MASK);
> -        snd_record_send(&record_channel->base);
> +    spice_assert(record_client->base.active);
> +    record_client->base.active = FALSE;
> +    if (record_client->base.client_active) {
> +        snd_set_command(&record_client->base, SND_CTRL_MASK);
> +        snd_record_send(&record_client->base);
>      } else {
> -        record_channel->base.command &= ~SND_CTRL_MASK;
> +        record_client->base.command &= ~SND_CTRL_MASK;
>      }
>  }
>
> @@ -1340,36 +1340,36 @@ SPICE_GNUC_VISIBLE uint32_t spice_server_record_get_samples(SpiceRecordInstance
>                                                              uint32_t *samples, uint32_t bufsize)
>  {
>      SndChannelClient *channel = sin->st->worker.connection;
> -    RecordChannel *record_channel = SPICE_CONTAINEROF(channel, RecordChannel, base);
> +    RecordChannelClient *record_client = SPICE_CONTAINEROF(channel, RecordChannelClient, base);
>      uint32_t read_pos;
>      uint32_t now;
>      uint32_t len;
>
>      if (!channel)
>          return 0;
> -    spice_assert(record_channel->base.active);
> +    spice_assert(record_client->base.active);
>
> -    if (record_channel->write_pos < RECORD_SAMPLES_SIZE / 2) {
> +    if (record_client->write_pos < RECORD_SAMPLES_SIZE / 2) {
>          return 0;
>      }
>
> -    len = MIN(record_channel->write_pos - record_channel->read_pos, bufsize);
> +    len = MIN(record_client->write_pos - record_client->read_pos, bufsize);
>
>      if (len < bufsize) {
> -        SndChannel *worker = record_channel->base.worker;
> -        snd_receive(&record_channel->base);
> +        SndChannel *worker = record_client->base.worker;
> +        snd_receive(&record_client->base);
>          if (!worker->connection) {
>              return 0;
>          }
> -        len = MIN(record_channel->write_pos - record_channel->read_pos, bufsize);
> +        len = MIN(record_client->write_pos - record_client->read_pos, bufsize);
>      }
>
> -    read_pos = record_channel->read_pos % RECORD_SAMPLES_SIZE;
> -    record_channel->read_pos += len;
> +    read_pos = record_client->read_pos % RECORD_SAMPLES_SIZE;
> +    record_client->read_pos += len;
>      now = MIN(len, RECORD_SAMPLES_SIZE - read_pos);
> -    memcpy(samples, &record_channel->samples[read_pos], now * 4);
> +    memcpy(samples, &record_client->samples[read_pos], now * 4);
>      if (now < len) {
> -        memcpy(samples + now, record_channel->samples, (len - now) * 4);
> +        memcpy(samples + now, record_client->samples, (len - now) * 4);
>      }
>      return len;
>  }
> @@ -1431,8 +1431,8 @@ static void on_new_record_channel(SndChannel *worker, SndChannelClient *snd_chan
>
>  static void snd_record_cleanup(SndChannelClient *channel)
>  {
> -    RecordChannel *record_channel = SPICE_CONTAINEROF(channel, RecordChannel, base);
> -    snd_codec_destroy(&record_channel->codec);
> +    RecordChannelClient *record_client = SPICE_CONTAINEROF(channel, RecordChannelClient, base);
> +    snd_codec_destroy(&record_client->codec);
>  }
>
>  static void snd_set_record_peer(RedChannel *channel, RedClient *client, RedsStream *stream,
> @@ -1440,12 +1440,12 @@ static void snd_set_record_peer(RedChannel *channel, RedClient *client, RedsStre
>                                  int num_caps, uint32_t *caps)
>  {
>      SndChannel *worker = g_object_get_data(G_OBJECT(channel), "sound-worker");
> -    RecordChannel *record_channel;
> +    RecordChannelClient *record_client;
>
>      snd_disconnect_channel(worker->connection);
>
> -    if (!(record_channel = (RecordChannel *)__new_channel(worker,
> -                                                          sizeof(*record_channel),
> +    if (!(record_client = (RecordChannelClient *)__new_channel(worker,
> +                                                          sizeof(*record_client),
>                                                            SPICE_CHANNEL_RECORD,
>                                                            client,
>                                                            stream,
> @@ -1459,9 +1459,9 @@ static void snd_set_record_peer(RedChannel *channel, RedClient *client, RedsStre
>          return;
>      }
>
> -    record_channel->mode = SPICE_AUDIO_DATA_MODE_RAW;
> +    record_client->mode = SPICE_AUDIO_DATA_MODE_RAW;
>
> -    on_new_record_channel(worker, &record_channel->base);
> +    on_new_record_channel(worker, &record_client->base);
>      if (worker->active) {
>          snd_record_start(worker);
>      }
> @@ -1594,7 +1594,7 @@ void snd_set_playback_compression(int on)
>          uint32_t type;
>          g_object_get(now->base_channel, "channel-type", &type, NULL);
>          if (type == SPICE_CHANNEL_PLAYBACK && now->connection) {
> -            PlaybackChannel* playback = (PlaybackChannel*)now->connection;
> +            PlaybackChannelClient* playback = (PlaybackChannelClient*)now->connection;
>              int client_can_celt = red_channel_client_test_remote_cap(playback->base.channel_client,
>                                      SPICE_PLAYBACK_CAP_CELT_0_5_1);
>              int client_can_opus = red_channel_client_test_remote_cap(playback->base.channel_client,
>



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