Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes of an image. More...
#include <pixdesc.h>
Data Fields | |
const char * | name |
uint8_t | nb_components |
The number of components each pixel has, (1-4) | |
uint8_t | log2_chroma_w |
Amount to shift the luma width right to find the chroma width. | |
uint8_t | log2_chroma_h |
Amount to shift the luma height right to find the chroma height. | |
uint8_t | flags |
AVComponentDescriptor | comp [4] |
Parameters that describe how pixels are packed. |
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.
AVComponentDescriptor AVPixFmtDescriptor::comp[4] |
Parameters that describe how pixels are packed.
If the format has chroma components, they must be stored in comp[1] and comp[2].
Definition at line 83 of file pixdesc.h.
Referenced by alloc_buffer(), av_get_bits_per_pixel(), av_image_copy(), av_image_fill_linesizes(), av_image_fill_max_pixsteps(), av_image_fill_pointers(), av_image_get_linesize(), av_read_image_line(), av_write_image_line(), avpicture_layout(), check_image_pointers(), filter(), hScale16To15_c(), hScale16To19_c(), planarCopyWrapper(), return_frame(), sws_init_context(), and video_get_buffer().
uint8_t AVPixFmtDescriptor::flags |
Definition at line 76 of file pixdesc.h.
Referenced by av_image_copy(), av_image_fill_linesizes(), av_image_fill_pointers(), av_image_get_linesize(), av_read_image_line(), av_write_image_line(), avpicture_layout(), config_props(), ff_is_hwaccel_pix_fmt(), raw_decode(), show_pix_fmts(), and start_frame().
uint8_t AVPixFmtDescriptor::log2_chroma_h |
Amount to shift the luma height right to find the chroma height.
For YV12 this is 1 for example. chroma_height= -((-luma_height) >> log2_chroma_h) The note above is needed to ensure rounding up. This value only refers to the chroma components.
Definition at line 75 of file pixdesc.h.
Referenced by av_get_bits_per_pixel(), av_image_copy(), av_image_fill_pointers(), av_picture_crop(), av_picture_pad(), avcodec_get_chroma_sub_sample(), avcodec_get_pix_fmt_loss(), avfilter_draw_slice(), avg_bits_per_pixel(), avpicture_layout(), color_config_props(), config_input(), config_input_main(), config_props(), config_props_output(), draw_slice(), end_frame(), ff_draw_horiz_band(), filter(), getSubSampleFactors(), MPV_frame_end(), and start_frame().
uint8_t AVPixFmtDescriptor::log2_chroma_w |
Amount to shift the luma width right to find the chroma width.
For YV12 this is 1 for example. chroma_width = -((-luma_width) >> log2_chroma_w) The note above is needed to ensure rounding up. This value only refers to the chroma components.chroma_width = -((-luma_width )>>log2_chroma_w)
Definition at line 66 of file pixdesc.h.
Referenced by av_get_bits_per_pixel(), av_image_fill_linesizes(), av_image_get_linesize(), av_picture_crop(), av_picture_pad(), avcodec_align_dimensions(), avcodec_get_chroma_sub_sample(), avcodec_get_pix_fmt_loss(), avg_bits_per_pixel(), color_config_props(), config_input(), config_input_main(), config_props(), config_props_output(), draw_slice(), end_frame(), ff_draw_horiz_band(), ff_fill_line_with_color(), filter(), getSubSampleFactors(), MPV_frame_end(), and start_frame().
const char* AVPixFmtDescriptor::name |
Definition at line 56 of file pixdesc.h.
Referenced by av_get_pix_fmt_name(), av_get_pix_fmt_string(), choose_pixel_fmt(), config_input_overlay(), config_props(), end_frame(), fbdev_read_header(), ff_dlog_link(), init(), main(), print_digraph(), show_pix_fmts(), show_stream(), and sws_format_name().
uint8_t AVPixFmtDescriptor::nb_components |
The number of components each pixel has, (1-4)
Definition at line 57 of file pixdesc.h.
Referenced by av_get_bits_per_pixel(), av_get_pix_fmt_string(), av_image_copy(), avpicture_layout(), config_props(), draw_slice(), filter(), and show_pix_fmts().