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FFmpeg
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FFmpeg
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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.
| const char* AVPixFmtDescriptor::name |
Definition at line 56 of file pixdesc.h.
Referenced by av_get_pix_fmt_name(), av_get_pix_fmt_string(), av_pix_fmt_desc_next(), doTest(), ff_draw_color(), ff_draw_init(), filter_frame(), get_color_type(), main(), print_digraph(), selfTest(), show_pix_fmts(), 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_padded_bits_per_pixel(), av_get_pix_fmt_string(), av_image_copy(), av_image_copy_to_buffer(), avcodec_find_best_pix_fmt_of_2(), avcodec_get_pix_fmt_loss(), choose_pixel_fmt(), config_props(), config_props_output(), copy_picture_field(), decode_frame(), encode_frame(), encode_init(), ff_draw_init(), filter(), filter_frame(), get_color_type(), get_pix_fmt_depth(), is_yuv_planar(), isALPHA(), isPlanar(), isYUV(), libopenjpeg_ispacked(), libopenjpeg_matches_pix_fmt(), mj2_create_image(), pick_format(), query_formats(), show_pix_fmts(), write_header(), and write_packet().
| 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_get_padded_bits_per_pixel(), av_picture_crop(), av_picture_pad(), av_pix_fmt_get_chroma_sub_sample(), avcodec_align_dimensions(), avcodec_get_chroma_sub_sample(), avcodec_get_pix_fmt_loss(), config_input(), config_input_main(), config_props(), config_props_output(), ff_draw_horiz_band(), ff_draw_init(), ff_fill_line_with_color(), ff_MPV_frame_end(), filter(), filter_frame(), geq_config_props(), getSubSampleFactors(), image_get_linesize(), libopenjpeg_matches_pix_fmt(), mj2_create_image(), and write_packet().
| 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_get_padded_bits_per_pixel(), av_image_copy(), av_image_copy_to_buffer(), av_image_fill_pointers(), av_picture_crop(), av_picture_pad(), av_pix_fmt_get_chroma_sub_sample(), avcodec_get_chroma_sub_sample(), avcodec_get_pix_fmt_loss(), config_input(), config_input_main(), config_out_props(), config_props(), config_props_output(), copy_picture_field(), ff_draw_horiz_band(), ff_draw_init(), ff_MPV_frame_end(), filter(), filter_frame(), geq_config_props(), getSubSampleFactors(), libopenjpeg_matches_pix_fmt(), mj2_create_image(), query_formats(), and write_packet().
| uint8_t AVPixFmtDescriptor::flags |
Definition at line 76 of file pixdesc.h.
Referenced by av_get_padded_bits_per_pixel(), av_image_alloc(), av_image_copy(), av_image_copy_to_buffer(), av_image_fill_linesizes(), av_image_fill_pointers(), av_image_get_buffer_size(), av_image_get_linesize(), av_read_image_line(), av_write_image_line(), config_props(), create_all_formats(), ff_all_formats(), ff_draw_color(), ff_draw_init(), filter_frame(), get_color_type(), image_get_linesize(), is_hwaccel_pix_fmt(), is_yuv_planar(), isBE(), isPackedRGB(), isPlanar(), isPlanarRGB(), isPlanarYUV(), isRGB(), isYUV(), main(), query_formats(), raw_decode(), show_pix_fmts(), usePal(), write_header(), and xwd_encode_frame().
| AVComponentDescriptor AVPixFmtDescriptor::comp[4] |
Parameters that describe how pixels are packed.
If the format has 2 or 4 components, then alpha is last. If the format has 1 or 2 components, then luma is 0. If the format has 3 or 4 components, if the RGB flag is set then 0 is red, 1 is green and 2 is blue; otherwise 0 is luma, 1 is chroma-U and 2 is chroma-V.
Definition at line 86 of file pixdesc.h.
Referenced by alloc_buffer(), av_get_bits_per_pixel(), av_get_padded_bits_per_pixel(), av_image_copy(), av_image_copy_to_buffer(), av_image_fill_max_pixsteps(), av_image_fill_pointers(), av_read_image_line(), av_write_image_line(), avcodec_get_pix_fmt_loss(), avcodec_string(), check_image_pointers(), config_input(), config_props_output(), decode_slice(), encode_frame(), encode_slice(), ff_draw_init(), ff_sws_init_output_funcs(), filter(), filter_frame(), get_pix_fmt_depth(), hScale16To15_c(), hScale16To19_c(), is16BPS(), is9_OR_10BPS(), is_yuv_planar(), libopenjpeg_decode_frame(), libopenjpeg_ispacked(), libopenjpeg_matches_pix_fmt(), mj2_create_image(), planarCopyWrapper(), return_frame(), sws_init_context(), swScale(), video_get_buffer(), and write_packet().
1.8.2
