Extract information from header.
[Functions operating on pfspd header]

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Detailed Description

No error codes are returned since the header should contain legal values i.e. created by p_read_header() or p_create_header().

Functions
int	p_get_num_frames (const pT_header *header)
int	p_is_interlaced (const pT_header *header)
int	p_is_progressive (const pT_header *header)
int	p_get_frame_width (const pT_header *header)
int	p_get_frame_height (const pT_header *header)
void	p_get_y_buffer_size (const pT_header *header, int *width, int *height)
void	p_get_uv_buffer_size (const pT_header *header, int *width, int *height)
void	p_get_rgb_buffer_size (const pT_header *header, int *width, int *height)
void	p_get_s_buffer_size (const pT_header *header, int *width, int *height)
pT_color	p_get_color_format (const pT_header *header)
void	p_get_all_freqs (const pT_header *header, double *image_freq, double *line_freq, double *pixel_freq)
pT_freq	p_get_image_freq (const pT_header *header)
pT_size	p_get_image_size (const pT_header *header)
pT_asp_rat	p_get_aspect_ratio (const pT_header *header)
pT_data_fmt	p_get_file_data_format (const pT_header *header)
char *	p_get_file_description (const pT_header *header)

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Function Documentation

int p_get_num_frames (  const pT_header *  header  )

Return number of frames.

int p_is_interlaced (  const pT_header *  header  )

Return 1 if interlaced, 0 if progressive.

int p_is_progressive (  const pT_header *  header  )

Return 0 if interlaced, 1 if progressive.

int p_get_frame_width (  const pT_header *  header  )

Return frame width.

int p_get_frame_height (  const pT_header *  header  )

Return frame height.

void p_get_y_buffer_size (  const pT_header *  header, int *  width, int *  height )

Return height and width of an Y buffer. This is the minimum size of a buffer that can be used by the read/write field/frame functions. For interlaced files this is the size of a field. For progressive files this is the size of a frame.

void p_get_uv_buffer_size (  const pT_header *  header, int *  width, int *  height )

Return height and width of a U/V buffer For planar U/V this is the size of one U or V buffer; for multiplexed U/V this is the size of the combined U/V buffer). This is the minimum size of a buffer that can be used by the read/write field/frame functions. For interlaced files this is the size of a field. For progressive files this is the size of a frame.

void p_get_rgb_buffer_size (  const pT_header *  header, int *  width, int *  height )

Return height and width of an R, G or B buffer. This is the minimum size of a buffer that can be used by the read/write field/frame functions. For interlaced files this is the size of a field. For progressive files this is the size of a frame.

void p_get_s_buffer_size (  const pT_header *  header, int *  width, int *  height )

Return height and width of an S buffer. This is the minimum size of a buffer that can be used by the read/write frame functions.

pT_color p_get_color_format (  const pT_header *  header  )

Return color format.

void p_get_all_freqs (  const pT_header *  header, double *  image_freq, double *  line_freq, double *  pixel_freq )

Return image, line, and pixel frequencies as doubles.

pT_freq p_get_image_freq (  const pT_header *  header  )

Return image frequency.

pT_size p_get_image_size (  const pT_header *  header  )

Return image size.

pT_asp_rat p_get_aspect_ratio (  const pT_header *  header  )

Return aspect ratio.

pT_data_fmt p_get_file_data_format (  const pT_header *  header  )

Return data format.

char* p_get_file_description (  const pT_header *  header  )

Return the file description string The returned string is valid as long as the header structure exists.

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