| import cython |
| from cython.cimports import libav as lib |
| from cython.cimports.av.audio.frame import AudioFrame |
| from cython.cimports.av.packet import Packet |
|
|
|
|
| @cython.final |
| @cython.cclass |
| class AudioStream(Stream): |
| def __repr__(self): |
| if self.codec_context is None: |
| return f"<av.AudioStream #{self.index} audio/<nocodec> at 0x{id(self):x}>" |
| form = self.format.name if self.format else None |
| return ( |
| f"<av.AudioStream #{self.index} {self.name} at {self.rate}Hz," |
| f" {self.layout.name}, {form} at 0x{id(self):x}>" |
| ) |
|
|
| def __getattr__(self, name): |
| if self.codec_context is None: |
| raise AttributeError( |
| f"'{type(self).__name__}' object has no attribute '{name}'" |
| ) |
| return getattr(self.codec_context, name) |
|
|
| @cython.ccall |
| def encode(self, frame: AudioFrame | None = None): |
| """ |
| Encode an :class:`.AudioFrame` and return a list of :class:`.Packet`. |
| |
| :rtype: list[Packet] |
| |
| .. seealso:: This is mostly a passthrough to :meth:`.CodecContext.encode`. |
| """ |
| self._assert_has_codec_context(lib.AVERROR_ENCODER_NOT_FOUND) |
| packets = self.codec_context.encode(frame) |
| packet: Packet |
| for packet in packets: |
| packet._stream = self |
| packet.ptr.stream_index = self.ptr.index |
|
|
| return packets |
|
|
| @cython.ccall |
| def decode(self, packet: Packet | None = None): |
| """ |
| Decode a :class:`.Packet` and return a list of :class:`.AudioFrame`. |
| |
| :rtype: list[AudioFrame] |
| |
| .. seealso:: This is a passthrough to :meth:`.CodecContext.decode`. |
| """ |
| self._assert_has_codec_context() |
| return self.codec_context.decode(packet) |
|
|
