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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 <stdatomic.h>
#include "avcodec.h"
#include "hwaccel.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"

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

static const
AVCodecHWConfigInternal * 		mmal_hw_configs []
 
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 98 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", \
.item_name = av_default_item_name, \
.option = options, \
.version = LIBAVUTIL_VERSION_INT, \
};
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
AVClass::class_name
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
options
static const AVOption options[]
Definition: mmaldec.c:816
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67

Definition at line 822 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 | AV_CODEC_CAP_HARDWARE, \
.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}, \
.hw_configs = mmal_hw_configs, \
.wrapper_name = "mmal", \
};
flush
static void flush(AVCodecContext *avctx)
Definition: aacdec_template.c:500
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
AV_CODEC_CAP_HARDWARE
#define AV_CODEC_CAP_HARDWARE
Codec is backed by a hardware implementation.
Definition: avcodec.h:1065
decode
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
ffmmal_decode
static int ffmmal_decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: mmaldec.c:770
AV_CODEC_CAP_DELAY
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: avcodec.h:993
ffmmal_flush
static void ffmmal_flush(AVCodecContext *avctx)
Definition: mmaldec.c:452
ffmmal_init_decoder
static av_cold int ffmmal_init_decoder(AVCodecContext *avctx)
Definition: mmaldec.c:349
ffmmal_close_decoder
static av_cold int ffmmal_close_decoder(AVCodecContext *avctx)
Definition: mmaldec.c:182
FFMMAL_DEC_CLASS
#define FFMMAL_DEC_CLASS(NAME)
Definition: mmaldec.c:822
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
ID
#define ID(x)
Definition: cast5.c:29
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
FF_CODEC_CAP_SETS_PKT_DTS
#define FF_CODEC_CAP_SETS_PKT_DTS
Decoders marked with FF_CODEC_CAP_SETS_PKT_DTS want to set AVFrame.pkt_dts manually.
Definition: internal.h:55
AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_MMAL
HW acceleration though MMAL, data[3] contains a pointer to the MMAL_BUFFER_HEADER_T structure...
Definition: pixfmt.h:227
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
mmal_hw_configs
static const AVCodecHWConfigInternal * mmal_hw_configs[]
Definition: mmaldec.c:811

Definition at line 830 of file mmaldec.c.

Function Documentation

static void ffmmal_poolref_unref ( FFPoolRef *  ref)
static

Definition at line 100 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 109 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 121 of file mmaldec.c.

Referenced by ffmal_copy_frame().

static void ffmmal_stop_decoder ( AVCodecContext *  avctx)
static

Definition at line 147 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 182 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 200 of file mmaldec.c.

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

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

Definition at line 215 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 223 of file mmaldec.c.

Referenced by ffmmal_flush(), and ffmmal_init_decoder().

static int ffmmal_fill_output_port ( AVCodecContext *  avctx)
static

Definition at line 240 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 260 of file mmaldec.c.

Referenced by ffmal_update_format().

static int ffmal_update_format ( AVCodecContext *  avctx)
static

Definition at line 273 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 349 of file mmaldec.c.

static void ffmmal_flush ( AVCodecContext *  avctx)
static

Definition at line 452 of file mmaldec.c.

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

Definition at line 479 of file mmaldec.c.

Referenced by ffmmal_decode().

static int ffmmal_fill_input_port ( AVCodecContext *  avctx)
static

Definition at line 576 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 623 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 670 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 770 of file mmaldec.c.

Variable Documentation

const AVCodecHWConfigInternal* mmal_hw_configs[]
static
Initial value:
= {
HW_CONFIG_INTERNAL(MMAL),
NULL
}
NULL
#define NULL
Definition: coverity.c:32
HW_CONFIG_INTERNAL
#define HW_CONFIG_INTERNAL(format)
Definition: hwaccel.h:57

Definition at line 811 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}
}
NULL
#define NULL
Definition: coverity.c:32
AV_OPT_TYPE_INT
Definition: opt.h:223

Definition at line 816 of file mmaldec.c.

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