MMAL Video Decoder. More...

#include <bcm_host.h>
#include <interface/mmal/mmal.h>
#include <interface/mmal/mmal_parameters_video.h>
#include <interface/mmal/util/mmal_util.h>
#include <interface/mmal/util/mmal_util_params.h>
#include <interface/mmal/util/mmal_default_components.h>
#include <interface/mmal/vc/mmal_vc_api.h>
#include <stdatomic.h>
#include "avcodec.h"
#include "internal.h"
#include "libavutil/avassert.h"
#include "libavutil/buffer.h"
#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/log.h"

Data Structures
struct	FFBufferEntry

struct	FFPoolRef

struct	FFBufferRef

struct	MMALDecodeContext

Macros
#define	MAX_DELAYED_FRAMES 16

#define	FFMMAL_DEC_CLASS(NAME)

#define	FFMMAL_DEC(NAME, ID)

Functions
static void	ffmmal_poolref_unref (FFPoolRef *ref)

static void	ffmmal_release_frame (void opaque, uint8_t data)

static int	ffmmal_set_ref (AVFrame frame, FFPoolRef pool, MMAL_BUFFER_HEADER_T *buffer)

static void	ffmmal_stop_decoder (AVCodecContext *avctx)

static av_cold int	ffmmal_close_decoder (AVCodecContext *avctx)

static void	input_callback (MMAL_PORT_T port, MMAL_BUFFER_HEADER_T buffer)

static void	output_callback (MMAL_PORT_T port, MMAL_BUFFER_HEADER_T buffer)

static void	control_port_cb (MMAL_PORT_T port, MMAL_BUFFER_HEADER_T buffer)

static int	ffmmal_fill_output_port (AVCodecContext *avctx)

static enum AVColorSpace	ffmmal_csp_to_av_csp (MMAL_FOURCC_T fourcc)

static int	ffmal_update_format (AVCodecContext *avctx)

static av_cold int	ffmmal_init_decoder (AVCodecContext *avctx)

static void	ffmmal_flush (AVCodecContext *avctx)

static int	ffmmal_add_packet (AVCodecContext avctx, AVPacket avpkt, int is_extradata)

static int	ffmmal_fill_input_port (AVCodecContext *avctx)

static int	ffmal_copy_frame (AVCodecContext avctx, AVFrame frame, MMAL_BUFFER_HEADER_T *buffer)

static int	ffmmal_read_frame (AVCodecContext avctx, AVFrame frame, int *got_frame)

static int	ffmmal_decode (AVCodecContext avctx, void data, int got_frame, AVPacket avpkt)

Variables
AVHWAccel	ff_h264_mmal_hwaccel

AVHWAccel	ff_mpeg2_mmal_hwaccel

AVHWAccel	ff_mpeg4_mmal_hwaccel

AVHWAccel	ff_vc1_mmal_hwaccel

static const AVOption	options []

Detailed Description

MMAL Video Decoder.

Definition in file mmaldec.c.

Macro Definition Documentation

#define MAX_DELAYED_FRAMES 16

Definition at line 97 of file mmaldec.c.

Referenced by ffmmal_read_frame().

#define FFMMAL_DEC_CLASS ( NAME )

Value:

static const AVClass ffmmal_##NAME##_dec_class = { \
        .class_name = "mmal_" #NAME "_dec", \
        .option     = options, \
        .version    = LIBAVUTIL_VERSION_INT, \
    };

Definition at line 844 of file mmaldec.c.

#define FFMMAL_DEC	(	NAME,
		ID
	)

Value:

FFMMAL_DEC_CLASS(NAME) \
    AVCodec ff_##NAME##_mmal_decoder = { \
        .name           = #NAME "_mmal", \
        .long_name      = NULL_IF_CONFIG_SMALL(#NAME " (mmal)"), \
        .type           = AVMEDIA_TYPE_VIDEO, \
        .id             = ID, \
        .priv_data_size = sizeof(MMALDecodeContext), \
        .init           = ffmmal_init_decoder, \
        .close          = ffmmal_close_decoder, \
        .decode         = ffmmal_decode, \
        .flush          = ffmmal_flush, \
        .priv_class     = &ffmmal_##NAME##_dec_class, \
        .capabilities   = AV_CODEC_CAP_DELAY, \
        .caps_internal  = FF_CODEC_CAP_SETS_PKT_DTS, \
        .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_MMAL, \
                                                         AV_PIX_FMT_YUV420P, \
                                                         AV_PIX_FMT_NONE}, \
    };

Definition at line 851 of file mmaldec.c.

Function Documentation

static void ffmmal_poolref_unref ( FFPoolRef * ref )

static

Definition at line 99 of file mmaldec.c.

Referenced by ffmal_update_format(), ffmmal_close_decoder(), and ffmmal_release_frame().

static void ffmmal_release_frame	(	void *	opaque,
		uint8_t *	data
	)

static

Definition at line 108 of file mmaldec.c.

Referenced by ffmmal_set_ref().

static int ffmmal_set_ref	(	AVFrame *	frame,
		FFPoolRef *	pool,
		MMAL_BUFFER_HEADER_T *	buffer
	)

static

Definition at line 120 of file mmaldec.c.

Referenced by ffmal_copy_frame().

static void ffmmal_stop_decoder ( AVCodecContext * avctx )

static

Definition at line 146 of file mmaldec.c.

Referenced by ffmmal_close_decoder(), and ffmmal_flush().

static av_cold int ffmmal_close_decoder ( AVCodecContext * avctx )

static

Definition at line 181 of file mmaldec.c.

Referenced by ffmmal_init_decoder().

static void input_callback	(	MMAL_PORT_T *	port,
		MMAL_BUFFER_HEADER_T *	buffer
	)

static

Definition at line 199 of file mmaldec.c.

Referenced by ffmmal_flush(), and ffmmal_init_decoder().

static void output_callback	(	MMAL_PORT_T *	port,
		MMAL_BUFFER_HEADER_T *	buffer
	)

static

Definition at line 214 of file mmaldec.c.

Referenced by ffmmal_flush(), ffmmal_init_decoder(), and ffmmal_read_frame().

static void control_port_cb	(	MMAL_PORT_T *	port,
		MMAL_BUFFER_HEADER_T *	buffer
	)

static

Definition at line 222 of file mmaldec.c.

Referenced by ffmmal_flush(), and ffmmal_init_decoder().

static int ffmmal_fill_output_port ( AVCodecContext * avctx )

static

Definition at line 239 of file mmaldec.c.

Referenced by ffmmal_decode(), and ffmmal_read_frame().

static enum AVColorSpace ffmmal_csp_to_av_csp ( MMAL_FOURCC_T fourcc )

static

Definition at line 259 of file mmaldec.c.

Referenced by ffmal_update_format().

static int ffmal_update_format ( AVCodecContext * avctx )

static

Definition at line 272 of file mmaldec.c.

Referenced by ffmmal_init_decoder(), and ffmmal_read_frame().

static av_cold int ffmmal_init_decoder ( AVCodecContext * avctx )

static

Definition at line 348 of file mmaldec.c.

static void ffmmal_flush ( AVCodecContext * avctx )

static

Definition at line 451 of file mmaldec.c.

static int ffmmal_add_packet	(	AVCodecContext *	avctx,
		AVPacket *	avpkt,
		int	is_extradata
	)

static

Definition at line 478 of file mmaldec.c.

Referenced by ffmmal_decode().

static int ffmmal_fill_input_port ( AVCodecContext * avctx )

static

Definition at line 575 of file mmaldec.c.

Referenced by ffmmal_decode(), and ffmmal_read_frame().

static int ffmal_copy_frame	(	AVCodecContext *	avctx,
		AVFrame *	frame,
		MMAL_BUFFER_HEADER_T *	buffer
	)

static

Definition at line 622 of file mmaldec.c.

Referenced by ffmmal_read_frame().

static int ffmmal_read_frame	(	AVCodecContext *	avctx,
		AVFrame *	frame,
		int *	got_frame
	)

static

Definition at line 669 of file mmaldec.c.

Referenced by ffmmal_decode().

static int ffmmal_decode	(	AVCodecContext *	avctx,
		void *	data,
		int *	got_frame,
		AVPacket *	avpkt
	)

static

Definition at line 769 of file mmaldec.c.

Variable Documentation

AVHWAccel ff_h264_mmal_hwaccel

Initial value:

= {
    .name       = "h264_mmal",
    .type       = AVMEDIA_TYPE_VIDEO,
    .id         = AV_CODEC_ID_H264,
    .pix_fmt    = AV_PIX_FMT_MMAL,
}

Definition at line 810 of file mmaldec.c.

AVHWAccel ff_mpeg2_mmal_hwaccel

Initial value:

= {
    .name       = "mpeg2_mmal",
    .type       = AVMEDIA_TYPE_VIDEO,
    .id         = AV_CODEC_ID_MPEG2VIDEO,
    .pix_fmt    = AV_PIX_FMT_MMAL,
}

Definition at line 817 of file mmaldec.c.

AVHWAccel ff_mpeg4_mmal_hwaccel

Initial value:

= {
    .name       = "mpeg4_mmal",
    .type       = AVMEDIA_TYPE_VIDEO,
    .id         = AV_CODEC_ID_MPEG4,
    .pix_fmt    = AV_PIX_FMT_MMAL,
}

Definition at line 824 of file mmaldec.c.

AVHWAccel ff_vc1_mmal_hwaccel

Initial value:

= {
    .name       = "vc1_mmal",
    .type       = AVMEDIA_TYPE_VIDEO,
    .id         = AV_CODEC_ID_VC1,
    .pix_fmt    = AV_PIX_FMT_MMAL,
}

Definition at line 831 of file mmaldec.c.

const AVOption options[]

static

Initial value:

={
    {"extra_buffers", "extra buffers", 0x42, AV_OPT_TYPE_INT, {.i64 = 10}, 0, 256, 0},
    {"extra_decoder_buffers", "extra MMAL internal buffered frames", 0x42, AV_OPT_TYPE_INT, {.i64 = 10}, 0, 256, 0},
    {NULL}
}

Definition at line 838 of file mmaldec.c.

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

Function Documentation

Variable Documentation