Module rsmpeg::avutil

Everything related to libavutil.

Structs

• AVAudioFifo
  Context for an Audio FIFO Buffer.
• AVBufferRef
• AVChannelLayout
• AVChannelLayoutIter
  Iterate over all standard channel layouts.
• AVChannelLayoutRef
• AVComponentDescriptor
• AVDictionary
• AVDictionaryEntry
• AVDictionaryEntryMut
• AVDictionaryEntryRef
• AVDictionaryIter
  Iterator over AVDictionary by reference.
• AVDictionaryMut
• AVDictionaryRef
• AVFrame
• AVFrameSideData
• AVFrameSideDataRef
• AVFrameWithImage
  It’s a AVFrame bound with AVImage, the AVFrame references the buffer owned by the AVImage.
• AVHWDeviceContext
• AVHWFramesContext
  This struct describes a set or pool of “hardware” frames (i.e. those with data not located in normal system memory). All the frames in the pool are assumed to be allocated in the same way and interchangeable.
• AVHWFramesContextMut
• AVHWFramesContextRef
• AVImage
• AVMediaType
  non exhaustive wrapper of AVMediaType
• AVMem
• AVMmap
  A read-only file buffer, the file is mmaped when available.
• AVPixFmtDescriptorRef
  Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes of an image. It also stores the subsampling factors and number of components.
• AVRational
  Rational number (pair of numerator and denominator).
• AVSamples

Functions

• av_add_q
  Add two rationals. Returns b+c.
• av_cmp_q
  Compare two rationals.
• av_d2q
  Convert a double precision floating point number to a rational. In case of infinity, the returned value is expressed as {1, 0} or {-1, 0} depending on the sign.
• av_div_q
  Divide one rational by another. Returns b/c.
• av_gcd_q
  Return the best rational so that a and b are multiple of it. If the resulting denominator is larger than max_den, return def.
• av_image_fill_arrays^⚠
  Setup the data pointers and linesizes based on the specified image parameters and the provided array.
• av_inv_q
  Invert a rational. @param q value @return 1 / q
• av_make_q
  Create an AVRational.
• av_mul_q
  Multiply two rationals. Returns b*c.
• av_nearer_q
  Find which of the two rationals is closer to another rational.
• av_q2d
  Convert an AVRational to a double. @param a AVRational to convert @return a in floating-point form @see av_d2q()
• av_q2intfloat
  Convert an AVRational to a IEEE 32-bit float expressed in fixed-point format.
• av_rescale_q
  Rescale a 64-bit integer by 2 rational numbers.
• av_rescale_q_rnd
  Rescale a 64-bit integer by 2 rational numbers with specified rounding.
• av_sub_q
  Subtract one rational from another. Returns b-c.
• err2str
  Return a description of the AVERROR code errnum.
• get_bytes_per_sample
  Return number of bytes per sample, return None when sample format is unknown.
• get_media_type_string
  Return a string describing the media_type enum, NULL if media_type is unknown.
• get_packed_sample_fmt
  Get the packed alternative form of the given sample format, return None on error.
• get_planar_sample_fmt
  Get the planar alternative form of the given sample format. return None on error.
• get_sample_fmt
  Return a sample format corresponding to name, or None on error.
• get_sample_fmt_name
  Return the name of given sample_fmt, or None if sample_fmt is not recognized.
• opt_set^⚠
  name: the name of the field to setval: if the field is not of a string type, then the given string is parsed. SI postfixes and some named scalars are supported. If the field is of a numeric type, it has to be a numeric or named scalar. Behavior with more than one scalar and +- infix operators is undefined. If the field is of a flags type, it has to be a sequence of numeric scalars or named flags separated by ‘+’ or ‘-’. Prefixing a flag with ‘+’ causes it to be set without affecting the other flags; similarly, ‘-’ unsets a flag. If the field is of a dictionary type, it has to be a ‘:’ separated list of key=value parameters. Values containing ‘:’ special characters must be escaped.search_flags: flags passed to av_opt_find2. I.e. if `AV_OPT_SEARCH_CHILDREN`` is passed here, then the option may be set on a child of obj.
• opt_set_bin^⚠
  Note: if val.len() exceeds i32::MAX, this function returns [RsmpegError::TryFromIntError].
• opt_set_double^⚠
  Safety
• opt_set_image_size^⚠
  Safety
• opt_set_int^⚠
  Safety
• opt_set_pixel_fmt^⚠
  Safety
• opt_set_q^⚠
  Safety
• opt_set_sample_fmt^⚠
  Safety
• opt_set_video_rate^⚠
  Safety
• ra
  return AVRational: num / den;
• sample_fmt_is_planar
  Check if the sample format is planar.
• ts2str
  Get a string containing a timestamp representation.
• ts2timestr
  Get a string containing a timestamp time representation.

Type Aliases

• AVMotionVector
• AVPixelFormat
  Pixel format.
• AVSampleFormat