FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
Macros | Functions | Variables
cbs_mpeg2.c File Reference
#include "libavutil/avassert.h"
#include "cbs.h"
#include "cbs_internal.h"
#include "cbs_mpeg2.h"
#include "internal.h"
#include "cbs_mpeg2_syntax_template.c"

Go to the source code of this file.

Macros

#define HEADER(name)
 
#define CHECK(call)
 
#define FUNC_NAME(rw, codec, name)   cbs_ ## codec ## _ ## rw ## _ ## name
 
#define FUNC_MPEG2(rw, name)   FUNC_NAME(rw, mpeg2, name)
 
#define FUNC(name)   FUNC_MPEG2(READWRITE, name)
 
#define SUBSCRIPTS(subs,...)   (subs > 0 ? ((int[subs + 1]){ subs, __VA_ARGS__ }) : NULL)
 
#define ui(width, name)   xui(width, name, current->name, 0)
 
#define uis(width, name, subs,...)   xui(width, name, current->name, subs, __VA_ARGS__)
 
#define READ
 
#define READWRITE   read
 
#define RWContext   GetBitContext
 
#define xui(width, name, var, subs,...)
 
#define marker_bit()
 
#define nextbits(width, compare, var)
 
#define WRITE
 
#define READWRITE   write
 
#define RWContext   PutBitContext
 
#define xui(width, name, var, subs,...)
 
#define marker_bit()
 
#define nextbits(width, compare, var)   (var)
 
#define START(start_code, type, read_func, free_func)
 
#define START(start_code, type, func)
 

Functions

static void cbs_mpeg2_free_user_data (void *unit, uint8_t *content)
 
static void cbs_mpeg2_free_slice (void *unit, uint8_t *content)
 
static int cbs_mpeg2_split_fragment (CodedBitstreamContext *ctx, CodedBitstreamFragment *frag, int header)
 
static int cbs_mpeg2_read_unit (CodedBitstreamContext *ctx, CodedBitstreamUnit *unit)
 
static int cbs_mpeg2_write_header (CodedBitstreamContext *ctx, CodedBitstreamUnit *unit, PutBitContext *pbc)
 
static int cbs_mpeg2_write_slice (CodedBitstreamContext *ctx, CodedBitstreamUnit *unit, PutBitContext *pbc)
 
static int cbs_mpeg2_write_unit (CodedBitstreamContext *ctx, CodedBitstreamUnit *unit)
 
static int cbs_mpeg2_assemble_fragment (CodedBitstreamContext *ctx, CodedBitstreamFragment *frag)
 
static void cbs_mpeg2_close (CodedBitstreamContext *ctx)
 

Variables

const CodedBitstreamType ff_cbs_type_mpeg2
 

Macro Definition Documentation

#define HEADER (   name)
Value:
do { \
ff_cbs_trace_header(ctx, name); \
} while (0)
ff_cbs_trace_header
void ff_cbs_trace_header(CodedBitstreamContext *ctx, const char *name)
Definition: cbs.c:367
ctx
AVFormatContext * ctx
Definition: movenc.c:48
name
const char * name
Definition: opengl_enc.c:103

Definition at line 27 of file cbs_mpeg2.c.

#define CHECK (   call)
Value:
do { \
err = (call); \
if (err < 0) \
return err; \
} while (0)
return
return
Definition: audio_convert.c:415
if
if(ret< 0)
Definition: vf_mcdeint.c:279

Definition at line 31 of file cbs_mpeg2.c.

#define FUNC_NAME (   rw,
  codec,
  name 
)    cbs_ ## codec ## _ ## rw ## _ ## name

Definition at line 37 of file cbs_mpeg2.c.

#define FUNC_MPEG2 (   rw,
  name 
)    FUNC_NAME(rw, mpeg2, name)

Definition at line 38 of file cbs_mpeg2.c.

#define FUNC (   name)    FUNC_MPEG2(READWRITE, name)

Definition at line 39 of file cbs_mpeg2.c.

#define SUBSCRIPTS (   subs,
  ... 
)    (subs > 0 ? ((int[subs + 1]){ subs, __VA_ARGS__ }) : NULL)

Definition at line 41 of file cbs_mpeg2.c.

#define ui (   width,
  name 
)    xui(width, name, current->name, 0)

Definition at line 43 of file cbs_mpeg2.c.

Referenced by butterworth_bp_filter(), chebyshev1_bp_filter(), chebyshev2_bp_filter(), extension_data(), group_of_pictures_header(), picture_coding_extension(), picture_display_extension(), picture_header(), quant_matrix_extension(), sequence_display_extension(), sequence_extension(), sequence_header(), slice_header(), and user_data().

#define uis (   width,
  name,
  subs,
  ... 
)    xui(width, name, current->name, subs, __VA_ARGS__)

Definition at line 45 of file cbs_mpeg2.c.

Referenced by quant_matrix_extension(), and sequence_header().

#define READ

Definition at line 49 of file cbs_mpeg2.c.

#define READWRITE   read

Definition at line 81 of file cbs_mpeg2.c.

#define RWContext   GetBitContext

Definition at line 82 of file cbs_mpeg2.c.

#define xui (   width,
  name,
  var,
  subs,
  ... 
)
Value:
do { \
uint32_t value = 0; \
CHECK(ff_cbs_read_unsigned(ctx, rw, width, #name, \
SUBSCRIPTS(subs, __VA_ARGS__), \
&value, 0, (1 << width) - 1)); \
var = value; \
} while (0)
ff_cbs_read_unsigned
int ff_cbs_read_unsigned(CodedBitstreamContext *ctx, GetBitContext *gbc, int width, const char *name, const int *subscripts, uint32_t *write_to, uint32_t range_min, uint32_t range_max)
Definition: cbs.c:426
CHECK
#define CHECK(call)
Definition: cbs_mpeg2.c:31
width
#define width
value
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
ctx
AVFormatContext * ctx
Definition: movenc.c:48
SUBSCRIPTS
#define SUBSCRIPTS(subs,...)
Definition: cbs_mpeg2.c:41
name
const char * name
Definition: opengl_enc.c:103

Definition at line 84 of file cbs_mpeg2.c.

Referenced by slice_header(), and user_data().

#define marker_bit ( )
Value:
do { \
av_unused uint32_t one; \
CHECK(ff_cbs_read_unsigned(ctx, rw, 1, "marker_bit", NULL, &one, 1, 1)); \
} while (0)
NULL
#define NULL
Definition: coverity.c:32
ff_cbs_read_unsigned
int ff_cbs_read_unsigned(CodedBitstreamContext *ctx, GetBitContext *gbc, int width, const char *name, const int *subscripts, uint32_t *write_to, uint32_t range_min, uint32_t range_max)
Definition: cbs.c:426
CHECK
#define CHECK(call)
Definition: cbs_mpeg2.c:31
ctx
AVFormatContext * ctx
Definition: movenc.c:48
av_unused
#define av_unused
Definition: attributes.h:125

Definition at line 90 of file cbs_mpeg2.c.

Referenced by picture_display_extension(), sequence_display_extension(), sequence_extension(), and sequence_header().

#define nextbits (   width,
  compare,
  var 
)
Value:
(get_bits_left(rw) >= width && \
(var = show_bits(rw, width)) == (compare))
compare
static float compare(const AVFrame *haystack, const AVFrame *obj, int offx, int offy)
Definition: vf_find_rect.c:105
get_bits_left
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:814
width
#define width
show_bits
static unsigned int show_bits(GetBitContext *s, int n)
Show 1-25 bits.
Definition: get_bits.h:443

Definition at line 94 of file cbs_mpeg2.c.

Referenced by slice_header().

#define WRITE

Definition at line 80 of file cbs_mpeg2.c.

#define READWRITE   write

Definition at line 81 of file cbs_mpeg2.c.

#define RWContext   PutBitContext

Definition at line 82 of file cbs_mpeg2.c.

#define xui (   width,
  name,
  var,
  subs,
  ... 
)
Value:
do { \
CHECK(ff_cbs_write_unsigned(ctx, rw, width, #name, \
SUBSCRIPTS(subs, __VA_ARGS__), \
var, 0, (1 << width) - 1)); \
} while (0)
ff_cbs_write_unsigned
int ff_cbs_write_unsigned(CodedBitstreamContext *ctx, PutBitContext *pbc, int width, const char *name, const int *subscripts, uint32_t value, uint32_t range_min, uint32_t range_max)
Definition: cbs.c:469
CHECK
#define CHECK(call)
Definition: cbs_mpeg2.c:31
width
#define width
ctx
AVFormatContext * ctx
Definition: movenc.c:48
SUBSCRIPTS
#define SUBSCRIPTS(subs,...)
Definition: cbs_mpeg2.c:41
name
const char * name
Definition: opengl_enc.c:103

Definition at line 84 of file cbs_mpeg2.c.

#define marker_bit ( )
Value:
do { \
CHECK(ff_cbs_write_unsigned(ctx, rw, 1, "marker_bit", NULL, 1, 1, 1)); \
} while (0)
NULL
#define NULL
Definition: coverity.c:32
ff_cbs_write_unsigned
int ff_cbs_write_unsigned(CodedBitstreamContext *ctx, PutBitContext *pbc, int width, const char *name, const int *subscripts, uint32_t value, uint32_t range_min, uint32_t range_max)
Definition: cbs.c:469
CHECK
#define CHECK(call)
Definition: cbs_mpeg2.c:31
ctx
AVFormatContext * ctx
Definition: movenc.c:48

Definition at line 90 of file cbs_mpeg2.c.

#define nextbits (   width,
  compare,
  var 
)    (var)

Definition at line 94 of file cbs_mpeg2.c.

#define START (   start_code,
  type,
  read_func,
  free_func 
)
Value:
case start_code: \
{ \
type *header; \
err = ff_cbs_alloc_unit_content(ctx, unit, \
sizeof(*header), free_func); \
if (err < 0) \
return err; \
header = unit->content; \
err = cbs_mpeg2_read_ ## read_func(ctx, &gbc, header); \
if (err < 0) \
return err; \
} \
break;
ff_cbs_alloc_unit_content
int ff_cbs_alloc_unit_content(CodedBitstreamContext *ctx, CodedBitstreamUnit *unit, size_t size, void(*free)(void *opaque, uint8_t *data))
Definition: cbs.c:506
header
static const uint8_t header[24]
Definition: sdr2.c:67
return
return
Definition: audio_convert.c:415
ctx
AVFormatContext * ctx
Definition: movenc.c:48
type
GLint GLenum type
Definition: opengl_enc.c:105
if
if(ret< 0)
Definition: vf_mcdeint.c:279
start_code
static const uint8_t start_code[]
Definition: videotoolboxenc.c:168

Referenced by cbs_mpeg2_read_unit(), and cbs_mpeg2_write_header().

#define START (   start_code,
  type,
  func 
)
Value:
case start_code: \
err = cbs_mpeg2_write_ ## func(ctx, pbc, unit->content); \
break;
ctx
AVFormatContext * ctx
Definition: movenc.c:48
func
int(* func)(AVBPrint *dst, const char *in, const char *arg)
Definition: jacosubdec.c:67
start_code
static const uint8_t start_code[]
Definition: videotoolboxenc.c:168

Function Documentation

static void cbs_mpeg2_free_user_data ( void *  unit,
uint8_t *  content 
)
static

Definition at line 106 of file cbs_mpeg2.c.

Referenced by cbs_mpeg2_read_unit().

static void cbs_mpeg2_free_slice ( void *  unit,
uint8_t *  content 
)
static

Definition at line 113 of file cbs_mpeg2.c.

Referenced by cbs_mpeg2_read_unit().

static int cbs_mpeg2_split_fragment ( CodedBitstreamContext *  ctx,
CodedBitstreamFragment *  frag,
int  header 
)
static

Definition at line 121 of file cbs_mpeg2.c.

static int cbs_mpeg2_read_unit ( CodedBitstreamContext *  ctx,
CodedBitstreamUnit *  unit 
)
static

Definition at line 167 of file cbs_mpeg2.c.

static int cbs_mpeg2_write_header ( CodedBitstreamContext *  ctx,
CodedBitstreamUnit *  unit,
PutBitContext *  pbc 
)
static

Definition at line 236 of file cbs_mpeg2.c.

Referenced by cbs_mpeg2_write_unit().

static int cbs_mpeg2_write_slice ( CodedBitstreamContext *  ctx,
CodedBitstreamUnit *  unit,
PutBitContext *  pbc 
)
static

Definition at line 262 of file cbs_mpeg2.c.

Referenced by cbs_mpeg2_write_unit().

static int cbs_mpeg2_write_unit ( CodedBitstreamContext *  ctx,
CodedBitstreamUnit *  unit 
)
static

Definition at line 296 of file cbs_mpeg2.c.

static int cbs_mpeg2_assemble_fragment ( CodedBitstreamContext *  ctx,
CodedBitstreamFragment *  frag 
)
static

Definition at line 351 of file cbs_mpeg2.c.

static void cbs_mpeg2_close ( CodedBitstreamContext *  ctx)
static

Definition at line 388 of file cbs_mpeg2.c.

Variable Documentation

const CodedBitstreamType ff_cbs_type_mpeg2
Initial value:
= {
.codec_id = AV_CODEC_ID_MPEG2VIDEO,
.priv_data_size = sizeof(CodedBitstreamMPEG2Context),
.split_fragment = &cbs_mpeg2_split_fragment,
.read_unit = &cbs_mpeg2_read_unit,
.write_unit = &cbs_mpeg2_write_unit,
.assemble_fragment = &cbs_mpeg2_assemble_fragment,
.close = &cbs_mpeg2_close,
}
cbs_mpeg2_write_unit
static int cbs_mpeg2_write_unit(CodedBitstreamContext *ctx, CodedBitstreamUnit *unit)
Definition: cbs_mpeg2.c:296
cbs_mpeg2_read_unit
static int cbs_mpeg2_read_unit(CodedBitstreamContext *ctx, CodedBitstreamUnit *unit)
Definition: cbs_mpeg2.c:167
cbs_mpeg2_assemble_fragment
static int cbs_mpeg2_assemble_fragment(CodedBitstreamContext *ctx, CodedBitstreamFragment *frag)
Definition: cbs_mpeg2.c:351
cbs_mpeg2_split_fragment
static int cbs_mpeg2_split_fragment(CodedBitstreamContext *ctx, CodedBitstreamFragment *frag, int header)
Definition: cbs_mpeg2.c:121
AV_CODEC_ID_MPEG2VIDEO
preferred ID for MPEG-1/2 video decoding
Definition: avcodec.h:220
cbs_mpeg2_close
static void cbs_mpeg2_close(CodedBitstreamContext *ctx)
Definition: cbs_mpeg2.c:388

Definition at line 395 of file cbs_mpeg2.c.

Generated on Tue Nov 6 2018 18:11:36 for FFmpeg by   doxygen 1.8.6