FFmpeg
Data Structures | Macros | Enumerations | Functions | Variables
h264_metadata_bsf.c File Reference
#include "libavutil/avstring.h"
#include "libavutil/display.h"
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "bsf.h"
#include "cbs.h"
#include "cbs_h264.h"
#include "h264.h"
#include "h264_levels.h"
#include "h264_sei.h"

Go to the source code of this file.

Data Structures

struct  H264MetadataContext
 

Macros

#define SET_VUI_FIELD(field)
 
#define CROP(border, unit)
 
#define OFFSET(x)   offsetof(H264MetadataContext, x)
 
#define FLAGS   (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
 
#define LEVEL(name, value)
 

Enumerations

enum  { PASS, INSERT, REMOVE, EXTRACT }
 
enum  { FLIP_HORIZONTAL = 1, FLIP_VERTICAL = 2 }
 
enum  { LEVEL_UNSET = -2, LEVEL_AUTO = -1 }
 

Functions

static int h264_metadata_update_sps (AVBSFContext *bsf, H264RawSPS *sps)
 
static int h264_metadata_filter (AVBSFContext *bsf, AVPacket *pkt)
 
static int h264_metadata_init (AVBSFContext *bsf)
 
static void h264_metadata_close (AVBSFContext *bsf)
 

Variables

static const AVOption h264_metadata_options []
 
static const AVClass h264_metadata_class
 
static enum AVCodecID h264_metadata_codec_ids []
 
const AVBitStreamFilter ff_h264_metadata_bsf
 

Macro Definition Documentation

#define SET_VUI_FIELD (   field)
Value:
do { \
if (ctx->field >= 0) { \
sps->vui.field = ctx->field; \
need_vui = 1; \
} \
} while (0)
AVFormatContext * ctx
Definition: movenc.c:48
if(ret)
static int FUNC() sps(CodedBitstreamContext *ctx, RWContext *rw, H264RawSPS *current)

Referenced by h264_metadata_update_sps().

#define CROP (   border,
  unit 
)
Value:
do { \
if (ctx->crop_ ## border >= 0) { \
if (ctx->crop_ ## border % unit != 0) { \
av_log(bsf, AV_LOG_ERROR, "Invalid value for crop_%s: " \
"must be a multiple of %d.\n", #border, unit); \
return AVERROR(EINVAL); \
} \
sps->frame_crop_ ## border ## _offset = \
ctx->crop_ ## border / unit; \
sps->frame_cropping_flag = 1; \
} \
} while (0)
#define av_log(a,...)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
AVFormatContext * ctx
Definition: movenc.c:48
if(ret)
static int FUNC() sps(CodedBitstreamContext *ctx, RWContext *rw, H264RawSPS *current)
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a it should return
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions

Referenced by h264_metadata_update_sps().

#define OFFSET (   x)    offsetof(H264MetadataContext, x)

Definition at line 623 of file h264_metadata_bsf.c.

Definition at line 624 of file h264_metadata_bsf.c.

#define LEVEL (   name,
  value 
)
Value:
{ .i64 = value }, .flags = FLAGS, .unit = "level"
#define NULL
Definition: coverity.c:32
#define FLAGS
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:108
const char * name
Definition: opengl_enc.c:102

Enumeration Type Documentation

anonymous enum
Enumerator
PASS 
INSERT 
REMOVE 
EXTRACT 

Definition at line 31 of file h264_metadata_bsf.c.

anonymous enum
Enumerator
FLIP_HORIZONTAL 
FLIP_VERTICAL 

Definition at line 38 of file h264_metadata_bsf.c.

anonymous enum
Enumerator
LEVEL_UNSET 
LEVEL_AUTO 

Definition at line 43 of file h264_metadata_bsf.c.

Function Documentation

static int h264_metadata_update_sps ( AVBSFContext bsf,
H264RawSPS sps 
)
static

Definition at line 90 of file h264_metadata_bsf.c.

Referenced by h264_metadata_filter(), and h264_metadata_init().

static int h264_metadata_filter ( AVBSFContext bsf,
AVPacket pkt 
)
static

Definition at line 278 of file h264_metadata_bsf.c.

static int h264_metadata_init ( AVBSFContext bsf)
static

Definition at line 577 of file h264_metadata_bsf.c.

static void h264_metadata_close ( AVBSFContext bsf)
static

Definition at line 615 of file h264_metadata_bsf.c.

Variable Documentation

const AVOption h264_metadata_options[]
static

Definition at line 625 of file h264_metadata_bsf.c.

const AVClass h264_metadata_class
static
Initial value:
= {
.class_name = "h264_metadata_bsf",
.item_name = av_default_item_name,
}
static const AVOption h264_metadata_options[]
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191

Definition at line 748 of file h264_metadata_bsf.c.

enum AVCodecID h264_metadata_codec_ids[]
static
Initial value:

Definition at line 755 of file h264_metadata_bsf.c.

const AVBitStreamFilter ff_h264_metadata_bsf
Initial value:
= {
.name = "h264_metadata",
.priv_data_size = sizeof(H264MetadataContext),
.priv_class = &h264_metadata_class,
}
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce then the filter should push the output frames on the output link immediately As an exception to the previous rule if the input frame is enough to produce several output frames then the filter needs output only at least one per link The additional frames can be left buffered in the filter
static int h264_metadata_filter(AVBSFContext *bsf, AVPacket *pkt)
static enum AVCodecID h264_metadata_codec_ids[]
static int h264_metadata_init(AVBSFContext *bsf)
static const AVClass h264_metadata_class
static void h264_metadata_close(AVBSFContext *bsf)
static enum AVCodecID codec_ids[]

Definition at line 759 of file h264_metadata_bsf.c.