[Cast] Repurpose CastInitializationStatus for variable frame size support.

media/cast/cast_defines.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_CAST_CAST_DEFINES_H_
 #define MEDIA_CAST_CAST_DEFINES_H_
 
 #include <stdint.h>
 
 #include <cmath>
@@ skipping 18 matching lines @@
 // implementation must retain in order to process the acknowledgements of past
 // frames.
 // This value is carefully choosen such that it fits in the 8-bits range for
 // frame IDs. It is also less than half of the full 8-bits range such that we
 // can handle wrap around and compare two frame IDs.
 const int kMaxUnackedFrames = 120;
 
 const int64 kCastMessageUpdateIntervalMs = 33;
 const int64 kNackRepeatIntervalMs = 30;
 
-enum CastInitializationStatus {
-  STATUS_AUDIO_UNINITIALIZED,
-  STATUS_VIDEO_UNINITIALIZED,
-  STATUS_AUDIO_INITIALIZED,
-  STATUS_VIDEO_INITIALIZED,
-  STATUS_INVALID_CAST_ENVIRONMENT,
-  STATUS_INVALID_CRYPTO_CONFIGURATION,
-  STATUS_UNSUPPORTED_AUDIO_CODEC,
-  STATUS_UNSUPPORTED_VIDEO_CODEC,
-  STATUS_INVALID_AUDIO_CONFIGURATION,
-  STATUS_INVALID_VIDEO_CONFIGURATION,
-  STATUS_HW_VIDEO_ENCODER_NOT_SUPPORTED,
+// Success/in-progress/failure status codes bubbled up to clients via
+// StatusChangeCallbacks.
+enum OperationalStatus {
+  // Client should not send frames yet (sender), or should not expect to receive
+  // frames yet (receiver).
+  STATUS_UNINITIALIZED,
+
+  // Client may now send or receive frames.
+  STATUS_INITIALIZED,
+
+  // Codec is being re-initialized.  Client may continue sending frames, but
+  // some may be ignored/dropped until a transition back to STATUS_INITIALIZED.
+  STATUS_CODEC_REINIT_PENDING,
+
+  // Session has halted due to invalid configuration.
+  STATUS_INVALID_CONFIGURATION,
+
+  // Session has halted due to an unsupported codec.
+  STATUS_UNSUPPORTED_CODEC,
+
+  // Session has halted due to a codec initialization failure.  Note that this
+  // can be reported after STATUS_INITIALIZED/STATUS_CODEC_REINIT_PENDING if the
+  // codec was re-initialized during the session.
+  STATUS_CODEC_INIT_FAILED,
+
+  // Session has halted due to a codec runtime failure.
+  STATUS_CODEC_RUNTIME_ERROR,
 };
 
 enum DefaultSettings {
   kDefaultAudioEncoderBitrate = 0,  // This means "auto," and may mean VBR.
   kDefaultAudioSamplingRate = 48000,
   kDefaultMaxQp = 56,
   kDefaultMinQp = 4,
   kDefaultMaxFrameRate = 30,
   kDefaultNumberOfVideoBuffers = 1,
   kDefaultRtcpIntervalMs = 500,
@@ skipping 136 matching lines @@
 
 inline int64 TimeDeltaToRtpDelta(base::TimeDelta delta, int rtp_timebase) {
   DCHECK_GT(rtp_timebase, 0);
   return delta * rtp_timebase / base::TimeDelta::FromSeconds(1);
 }
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_CAST_DEFINES_H_