mmaldec.c File Reference

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 "avcodec.h"
#include "internal.h"
#include "libavutil/atomic.h"
#include "libavutil/avassert.h"
#include "libavutil/buffer.h"
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "libavutil/log.h"

Go to the source code of this file.

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 94 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 825 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 832 of file mmaldec.c.

Function Documentation

static void ffmmal_poolref_unref ( FFPoolRef *  ref )

static

Definition at line 96 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 104 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 116 of file mmaldec.c.

Referenced by ffmal_copy_frame().

static void ffmmal_stop_decoder ( AVCodecContext *  avctx )

static

Definition at line 142 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 177 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 195 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 210 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 218 of file mmaldec.c.

Referenced by ffmmal_flush(), and ffmmal_init_decoder().

static int ffmmal_fill_output_port ( AVCodecContext *  avctx )

static

Definition at line 236 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 256 of file mmaldec.c.

Referenced by ffmal_update_format().

static int ffmal_update_format ( AVCodecContext *  avctx )

static

Definition at line 269 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 330 of file mmaldec.c.

static void ffmmal_flush ( AVCodecContext *  avctx )

static

Definition at line 432 of file mmaldec.c.

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

static

Definition at line 459 of file mmaldec.c.

Referenced by ffmmal_decode().

static int ffmmal_fill_input_port ( AVCodecContext *  avctx )

static

Definition at line 556 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 603 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 649 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 750 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 791 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 798 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 805 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 812 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 819 of file mmaldec.c.