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/*
* Broadcom BM2835 V4L2 driver
*
* Copyright © 2013 Raspberry Pi (Trading) Ltd.
*
* Authors: Vincent Sanders @ Collabora
* Dave Stevenson @ Broadcom
* (now dave.stevenson@raspberrypi.org)
* Simon Mellor @ Broadcom
* Luke Diamand @ Broadcom
*/
#ifndef MMAL_MSG_FORMAT_H
#define MMAL_MSG_FORMAT_H
#include "mmal-msg-common.h"
/* MMAL_ES_FORMAT_T */
struct mmal_audio_format {
u32 channels; /* Number of audio channels */
u32 sample_rate; /* Sample rate */
u32 bits_per_sample; /* Bits per sample */
u32 block_align; /* Size of a block of data */
};
struct mmal_video_format {
u32 width; /* Width of frame in pixels */
u32 height; /* Height of frame in rows of pixels */
struct mmal_rect crop; /* Visible region of the frame */
struct mmal_rational frame_rate; /* Frame rate */
struct mmal_rational par; /* Pixel aspect ratio */
/*
* FourCC specifying the color space of the video stream. See the
* MmalColorSpace "pre-defined color spaces" for some examples.
*/
u32 color_space;
};
struct mmal_subpicture_format {
u32 x_offset;
u32 y_offset;
};
union mmal_es_specific_format {
struct mmal_audio_format audio;
struct mmal_video_format video;
struct mmal_subpicture_format subpicture;
};
/* Definition of an elementary stream format (MMAL_ES_FORMAT_T) */
struct mmal_es_format_local {
u32 type; /* enum mmal_es_type */
u32 encoding; /* FourCC specifying encoding of the elementary
* stream.
*/
u32 encoding_variant; /* FourCC specifying the specific
* encoding variant of the elementary
* stream.
*/
union mmal_es_specific_format *es; /* Type specific
* information for the
* elementary stream
*/
u32 bitrate; /* Bitrate in bits per second */
u32 flags; /* Flags describing properties of the elementary
* stream.
*/
u32 extradata_size; /* Size of the codec specific data */
u8 *extradata; /* Codec specific data */
};
/* Remote definition of an elementary stream format (MMAL_ES_FORMAT_T) */
struct mmal_es_format {
u32 type; /* enum mmal_es_type */
u32 encoding; /* FourCC specifying encoding of the elementary
* stream.
*/
u32 encoding_variant; /* FourCC specifying the specific
* encoding variant of the elementary
* stream.
*/
u32 es; /* Type specific
* information for the
* elementary stream
*/
u32 bitrate; /* Bitrate in bits per second */
u32 flags; /* Flags describing properties of the elementary
* stream.
*/
u32 extradata_size; /* Size of the codec specific data */
u32 extradata; /* Codec specific data */
};
#endif /* MMAL_MSG_FORMAT_H */
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