Macros | Functions | Variables
mpegvideo.c File Reference

The simplest mpeg encoder (well, it was the simplest!). More...

#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "dsputil.h"
#include "h264chroma.h"
#include "internal.h"
#include "mathops.h"
#include "mpegvideo.h"
#include "mjpegenc.h"
#include "msmpeg4.h"
#include "xvmc_internal.h"
#include "thread.h"
#include <limits.h>
Include dependency graph for mpegvideo.c:

Go to the source code of this file.

Macros

#define MAKE_WRITABLE(table)
 
#define UPDATE_TABLE(table)
 
#define COPY(a)   bak->a = src->a
 
#define UPDATE_PICTURE(pic)
 
#define COLOR(theta, r)
 

Functions

static void dct_unquantize_mpeg1_intra_c (MpegEncContext *s, int16_t *block, int n, int qscale)
 
static void dct_unquantize_mpeg1_inter_c (MpegEncContext *s, int16_t *block, int n, int qscale)
 
static void dct_unquantize_mpeg2_intra_c (MpegEncContext *s, int16_t *block, int n, int qscale)
 
static void dct_unquantize_mpeg2_intra_bitexact (MpegEncContext *s, int16_t *block, int n, int qscale)
 
static void dct_unquantize_mpeg2_inter_c (MpegEncContext *s, int16_t *block, int n, int qscale)
 
static void dct_unquantize_h263_intra_c (MpegEncContext *s, int16_t *block, int n, int qscale)
 
static void dct_unquantize_h263_inter_c (MpegEncContext *s, int16_t *block, int n, int qscale)
 
static void mpeg_er_decode_mb (void *opaque, int ref, int mv_dir, int mv_type, int(*mv)[2][4][2], int mb_x, int mb_y, int mb_intra, int mb_skipped)
 
av_cold int ff_dct_common_init (MpegEncContext *s)
 
int ff_mpv_frame_size_alloc (MpegEncContext *s, int linesize)
 
static int alloc_frame_buffer (MpegEncContext *s, Picture *pic)
 Allocate a frame buffer. More...
 
static void free_picture_tables (Picture *pic)
 
static int alloc_picture_tables (MpegEncContext *s, Picture *pic)
 
static int make_tables_writable (Picture *pic)
 
int ff_alloc_picture (MpegEncContext *s, Picture *pic, int shared)
 Allocate a Picture. More...
 
void ff_mpeg_unref_picture (MpegEncContext *s, Picture *pic)
 Deallocate a picture. More...
 
static int update_picture_tables (Picture *dst, Picture *src)
 
int ff_mpeg_ref_picture (MpegEncContext *s, Picture *dst, Picture *src)
 
static int init_duplicate_context (MpegEncContext *s)
 
static void free_duplicate_context (MpegEncContext *s)
 
static void backup_duplicate_context (MpegEncContext *bak, MpegEncContext *src)
 
int ff_update_duplicate_context (MpegEncContext *dst, MpegEncContext *src)
 
int ff_mpeg_update_thread_context (AVCodecContext *dst, const AVCodecContext *src)
 
void ff_MPV_common_defaults (MpegEncContext *s)
 Set the given MpegEncContext to common defaults (same for encoding and decoding). More...
 
void ff_MPV_decode_defaults (MpegEncContext *s)
 Set the given MpegEncContext to defaults for decoding. More...
 
static int init_er (MpegEncContext *s)
 
static int init_context_frame (MpegEncContext *s)
 Initialize and allocates MpegEncContext fields dependent on the resolution. More...
 
av_cold int ff_MPV_common_init (MpegEncContext *s)
 init common structure for both encoder and decoder. More...
 
static int free_context_frame (MpegEncContext *s)
 Frees and resets MpegEncContext fields depending on the resolution. More...
 
int ff_MPV_common_frame_size_change (MpegEncContext *s)
 
void ff_MPV_common_end (MpegEncContext *s)
 
void ff_init_rl (RLTable *rl, uint8_t static_store[2][2 *MAX_RUN+MAX_LEVEL+3])
 
void ff_init_vlc_rl (RLTable *rl)
 
void ff_release_unused_pictures (MpegEncContext *s, int remove_current)
 
static int pic_is_unused (MpegEncContext *s, Picture *pic)
 
static int find_unused_picture (MpegEncContext *s, int shared)
 
int ff_find_unused_picture (MpegEncContext *s, int shared)
 
static void update_noise_reduction (MpegEncContext *s)
 
int ff_MPV_frame_start (MpegEncContext *s, AVCodecContext *avctx)
 generic function for encode/decode called after coding/decoding the header and before a frame is coded/decoded. More...
 
void ff_MPV_frame_end (MpegEncContext *s)
 
static void draw_line (uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color)
 Draw a line from (ex, ey) -> (sx, sy). More...
 
static void draw_arrow (uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color)
 Draw an arrow from (ex, ey) -> (sx, sy). More...
 
void ff_print_debug_info2 (AVCodecContext *avctx, Picture *p, AVFrame *pict, uint8_t *mbskip_table, int *low_delay, int mb_width, int mb_height, int mb_stride, int quarter_sample)
 Print debugging info for the given picture. More...
 
void ff_print_debug_info (MpegEncContext *s, Picture *p, AVFrame *pict)
 
int ff_mpv_export_qp_table (MpegEncContext *s, AVFrame *f, Picture *p, int qp_type)
 
static int hpel_motion_lowres (MpegEncContext *s, uint8_t *dest, uint8_t *src, int field_based, int field_select, int src_x, int src_y, int width, int height, int stride, int h_edge_pos, int v_edge_pos, int w, int h, h264_chroma_mc_func *pix_op, int motion_x, int motion_y)
 
static av_always_inline void mpeg_motion_lowres (MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int field_based, int bottom_field, int field_select, uint8_t **ref_picture, h264_chroma_mc_func *pix_op, int motion_x, int motion_y, int h, int mb_y)
 
static void chroma_4mv_motion_lowres (MpegEncContext *s, uint8_t *dest_cb, uint8_t *dest_cr, uint8_t **ref_picture, h264_chroma_mc_func *pix_op, int mx, int my)
 
static void MPV_motion_lowres (MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int dir, uint8_t **ref_picture, h264_chroma_mc_func *pix_op)
 motion compensation of a single macroblock More...
 
int ff_MPV_lowest_referenced_row (MpegEncContext *s, int dir)
 find the lowest MB row referenced in the MVs More...
 
static void put_dct (MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
 
static void add_dct (MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size)
 
static void add_dequant_dct (MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
 
void ff_clean_intra_table_entries (MpegEncContext *s)
 Clean dc, ac, coded_block for the current non-intra MB. More...
 
static av_always_inline void MPV_decode_mb_internal (MpegEncContext *s, int16_t block[12][64], int lowres_flag, int is_mpeg12)
 
void ff_MPV_decode_mb (MpegEncContext *s, int16_t block[12][64])
 
void ff_draw_horiz_band (AVCodecContext *avctx, DSPContext *dsp, Picture *cur, Picture *last, int y, int h, int picture_structure, int first_field, int draw_edges, int low_delay, int v_edge_pos, int h_edge_pos)
 
void ff_mpeg_draw_horiz_band (MpegEncContext *s, int y, int h)
 
void ff_init_block_index (MpegEncContext *s)
 
void ff_block_permute (int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last)
 Permute an 8x8 block. More...
 
void ff_mpeg_flush (AVCodecContext *avctx)
 
void ff_set_qscale (MpegEncContext *s, int qscale)
 set qscale and update qscale dependent variables. More...
 
void ff_MPV_report_decode_progress (MpegEncContext *s)
 

Variables

static const uint8_t ff_default_chroma_qscale_table [32]
 
const uint8_t ff_mpeg1_dc_scale_table [128]
 
static const uint8_t mpeg2_dc_scale_table1 [128]
 
static const uint8_t mpeg2_dc_scale_table2 [128]
 
static const uint8_t mpeg2_dc_scale_table3 [128]
 
const uint8_t *const ff_mpeg2_dc_scale_table [4]
 
enum AVPixelFormat ff_pixfmt_list_420 []
 

Detailed Description

The simplest mpeg encoder (well, it was the simplest!).

Definition in file mpegvideo.c.

Macro Definition Documentation

#define COLOR (   theta,
  r 
)
Value:
u = (int)(128 + r * cos(theta * 3.141592 / 180)); \
v = (int)(128 + r * sin(theta * 3.141592 / 180));
v
float v
Definition: avf_showspectrum.c:88
r
const char * r
Definition: vf_curves.c:94
u
float u
Definition: avf_showspectrum.c:88

Referenced by ff_print_debug_info2().

#define COPY (   a)    bak->a = src->a

Referenced by backup_duplicate_context().

#define MAKE_WRITABLE (   table)
Value:
do {\
if (pic->table &&\
(ret = av_buffer_make_writable(&pic->table)) < 0)\
return ret;\
} while (0)
av_buffer_make_writable
int av_buffer_make_writable(AVBufferRef **pbuf)
Create a writable reference from a given buffer reference, avoiding data copy if possible.
Definition: libavutil/buffer.c:138
if
initialize output if(nPeaks >3)%at least 3 peaks in spectrum for trying to find f0 nf0peaks
ret
ret
Definition: avfilter.c:821
return
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 This method is called when a frame is wanted on an output For an 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 it should return
Definition: filter_design.txt:216

Referenced by make_tables_writable().

#define UPDATE_PICTURE (   pic)
Value:
do {\
ff_mpeg_unref_picture(s, &s->pic);\
if (s1->pic.f.data[0])\
ret = ff_mpeg_ref_picture(s, &s->pic, &s1->pic);\
else\
ret = update_picture_tables(&s->pic, &s1->pic);\
if (ret < 0)\
return ret;\
} while (0)
ff_mpeg_ref_picture
int ff_mpeg_ref_picture(MpegEncContext *s, Picture *dst, Picture *src)
Definition: mpegvideo.c:505
s
const char * s
Definition: avisynth_c.h:668
update_picture_tables
static int update_picture_tables(Picture *dst, Picture *src)
Definition: mpegvideo.c:460
if
initialize output if(nPeaks >3)%at least 3 peaks in spectrum for trying to find f0 nf0peaks
ff_mpeg_unref_picture
void ff_mpeg_unref_picture(MpegEncContext *s, Picture *pic)
Deallocate a picture.
Definition: mpegvideo.c:441
ret
ret
Definition: avfilter.c:821
s1
#define s1
Definition: regdef.h:38
return
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 This method is called when a frame is wanted on an output For an 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 it should return
Definition: filter_design.txt:216

Referenced by ff_mpeg_update_thread_context().

#define UPDATE_TABLE (   table)
Value:
do {\
if (src->table &&\
(!dst->table || dst->table->buffer != src->table->buffer)) {\
av_buffer_unref(&dst->table);\
dst->table = av_buffer_ref(src->table);\
if (!dst->table) {\
free_picture_tables(dst);\
return AVERROR(ENOMEM);\
}\
}\
} while (0)
av_buffer_unref
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it...
Definition: libavutil/buffer.c:105
if
initialize output if(nPeaks >3)%at least 3 peaks in spectrum for trying to find f0 nf0peaks
src
AVS_Value src
Definition: avisynth_c.h:523
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFilterBuffer 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.Buffer references ownership and permissions
av_buffer_ref
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: libavutil/buffer.c:91
dst
else dst[i][x+y *dst_stride[i]]
Definition: vf_mcdeint.c:160
free_picture_tables
static void free_picture_tables(Picture *pic)
Definition: mpegvideo.c:293
return
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 This method is called when a frame is wanted on an output For an 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 it should return
Definition: filter_design.txt:216

Referenced by update_picture_tables().

Function Documentation

static void add_dct ( MpegEncContext *  s,
int16_t *  block,
int  i,
uint8_t *  dest,
int  line_size 
)
inlinestatic

Definition at line 2604 of file mpegvideo.c.

Referenced by MPV_decode_mb_internal().

static void add_dequant_dct ( MpegEncContext *  s,
int16_t *  block,
int  i,
uint8_t *  dest,
int  line_size,
int  qscale 
)
inlinestatic

Definition at line 2612 of file mpegvideo.c.

Referenced by MPV_decode_mb_internal().

static int alloc_frame_buffer ( MpegEncContext *  s,
Picture *  pic 
)
static

Allocate a frame buffer.

Definition at line 232 of file mpegvideo.c.

Referenced by ff_alloc_picture().

static int alloc_picture_tables ( MpegEncContext *  s,
Picture *  pic 
)
static

Definition at line 313 of file mpegvideo.c.

Referenced by ff_alloc_picture().

static void backup_duplicate_context ( MpegEncContext *  bak,
MpegEncContext *  src 
)
static

Definition at line 608 of file mpegvideo.c.

Referenced by ff_update_duplicate_context().

static void chroma_4mv_motion_lowres ( MpegEncContext *  s,
uint8_t *  dest_cb,
uint8_t *  dest_cr,
uint8_t **  ref_picture,
h264_chroma_mc_func *  pix_op,
int  mx,
int  my 
)
inlinestatic

Definition at line 2361 of file mpegvideo.c.

Referenced by MPV_motion_lowres().

static void dct_unquantize_h263_inter_c ( MpegEncContext *  s,
int16_t *  block,
int  n,
int  qscale 
)
static

Definition at line 3271 of file mpegvideo.c.

Referenced by ff_dct_common_init().

static void dct_unquantize_h263_intra_c ( MpegEncContext *  s,
int16_t *  block,
int  n,
int  qscale 
)
static

Definition at line 3237 of file mpegvideo.c.

Referenced by ff_dct_common_init().

static void dct_unquantize_mpeg1_inter_c ( MpegEncContext *  s,
int16_t *  block,
int  n,
int  qscale 
)
static

Definition at line 3119 of file mpegvideo.c.

Referenced by ff_dct_common_init().

static void dct_unquantize_mpeg1_intra_c ( MpegEncContext *  s,
int16_t *  block,
int  n,
int  qscale 
)
static

Definition at line 3090 of file mpegvideo.c.

Referenced by ff_dct_common_init().

static void dct_unquantize_mpeg2_inter_c ( MpegEncContext *  s,
int16_t *  block,
int  n,
int  qscale 
)
static

Definition at line 3206 of file mpegvideo.c.

Referenced by ff_dct_common_init().

static void dct_unquantize_mpeg2_intra_bitexact ( MpegEncContext *  s,
int16_t *  block,
int  n,
int  qscale 
)
static

Definition at line 3175 of file mpegvideo.c.

Referenced by ff_dct_common_init().

static void dct_unquantize_mpeg2_intra_c ( MpegEncContext *  s,
int16_t *  block,
int  n,
int  qscale 
)
static

Definition at line 3148 of file mpegvideo.c.

Referenced by ff_dct_common_init().

static void draw_arrow ( uint8_t *  buf,
int  sx,
int  sy,
int  ex,
int  ey,
int  w,
int  h,
int  stride,
int  color 
)
static

Draw an arrow from (ex, ey) -> (sx, sy).

Parameters
wwidth of the image
hheight of the image
stridestride/linesize of the image
colorcolor of the arrow

Definition at line 1847 of file mpegvideo.c.

Referenced by ff_print_debug_info2().

static void draw_line ( uint8_t *  buf,
int  sx,
int  sy,
int  ex,
int  ey,
int  w,
int  h,
int  stride,
int  color 
)
static

Draw a line from (ex, ey) -> (sx, sy).

Parameters
wwidth of the image
hheight of the image
stridestride/linesize of the image
colorcolor of the arrow

Definition at line 1794 of file mpegvideo.c.

Referenced by draw_arrow().

int ff_alloc_picture ( MpegEncContext *  s,
Picture *  pic,
int  shared 
)

Allocate a Picture.

The pixels are allocated/set by calling get_buffer() if shared = 0

Definition at line 384 of file mpegvideo.c.

Referenced by ff_MPV_frame_start(), load_input_picture(), and select_input_picture().

void ff_block_permute ( int16_t *  block,
uint8_t *  permutation,
const uint8_t *  scantable,
int  last 
)

Permute an 8x8 block.

permute block according to permuatation.

Parameters
blockthe block which will be permuted according to the given permutation vector
permutationthe permutation vector
lastthe last non zero coefficient in scantable order, used to speed the permutation up
scantablethe used scantable, this is only used to speed the permutation up, the block is not (inverse) permutated to scantable order!

Definition at line 3045 of file mpegvideo.c.

Referenced by dct_quantize_bfin(), and ff_dct_quantize_c().

void ff_clean_intra_table_entries ( MpegEncContext *  s)

Clean dc, ac, coded_block for the current non-intra MB.

Definition at line 2625 of file mpegvideo.c.

Referenced by encode_thread(), mpeg4_decode_partition_a(), and MPV_decode_mb_internal().

av_cold int ff_dct_common_init ( MpegEncContext *  s)

Definition at line 160 of file mpegvideo.c.

Referenced by dnxhd_encode_init(), ff_h263_decode_frame(), and ff_MPV_common_init().

void ff_draw_horiz_band ( AVCodecContext *  avctx,
DSPContext *  dsp,
Picture *  cur,
Picture *  last,
int  y,
int  h,
int  picture_structure,
int  first_field,
int  draw_edges,
int  low_delay,
int  v_edge_pos,
int  h_edge_pos 
)
Parameters
his the normal height, this will be reduced automatically if needed for the last row

Definition at line 2921 of file mpegvideo.c.

Referenced by ff_mpeg_draw_horiz_band(), and svq3_decode_frame().

int ff_find_unused_picture ( MpegEncContext *  s,
int  shared 
)

Definition at line 1453 of file mpegvideo.c.

Referenced by decode_wmv9(), ff_h263_decode_frame(), ff_MPV_frame_start(), h261_decode_frame(), load_input_picture(), select_input_picture(), and vc1_decode_frame().

void ff_init_block_index ( MpegEncContext *  s)

Definition at line 3005 of file mpegvideo.c.

Referenced by decode_slice(), encode_thread(), estimate_motion_thread(), ff_h261_reorder_mb_index(), h261_decode_mb(), h261_decode_mb_skipped(), init_block_index(), mpeg4_decode_partition_a(), mpeg4_decode_partition_b(), mpeg_decode_slice(), mpeg_er_decode_mb(), rv10_decode_packet(), rv34_decode_slice(), and svq1_encode_plane().

void ff_init_rl ( RLTable *  rl,
uint8_t  static_store[2][2 *MAX_RUN+MAX_LEVEL+3] 
)
Parameters
static_storestatic uint8_t array[2][2*MAX_RUN + MAX_LEVEL + 3] which will hold the level and run tables, if this is NULL av_malloc() will be used

Definition at line 1304 of file mpegvideo.c.

Referenced by encode_init(), ff_h261_common_init(), ff_h263_decode_init_vlc(), ff_h263_encode_init(), ff_mpeg12_init_vlcs(), ff_mpeg1_encode_init(), ff_mpeg4videodec_static_init(), ff_msmpeg4_decode_init(), and ff_msmpeg4_encode_init().

void ff_init_vlc_rl ( RLTable *  rl)

Definition at line 1356 of file mpegvideo.c.

void ff_mpeg_draw_horiz_band ( MpegEncContext *  s,
int  y,
int  h 
)

Definition at line 2996 of file mpegvideo.c.

Referenced by decode_slice(), dxva2_mpeg2_end_frame(), dxva2_vc1_end_frame(), ff_intrax8_decode_picture(), ff_vaapi_mpeg_end_frame(), ff_vdpau_add_data_chunk(), ff_vdpau_common_start_frame(), ff_xvmc_decode_mb(), ff_xvmc_field_end(), mpeg_decode_slice(), vc1_decode_b_blocks(), vc1_decode_i_blocks(), vc1_decode_i_blocks_adv(), vc1_decode_p_blocks(), and vc1_decode_skip_blocks().

void ff_mpeg_flush ( AVCodecContext *  avctx)

Definition at line 3066 of file mpegvideo.c.

Referenced by decode_wmv9(), and flush().

int ff_mpeg_ref_picture ( MpegEncContext *  s,
Picture *  dst,
Picture *  src 
)

Definition at line 505 of file mpegvideo.c.

Referenced by ff_h263_round_chroma(), ff_mpeg_update_thread_context(), ff_MPV_frame_start(), and select_input_picture().

void ff_mpeg_unref_picture ( MpegEncContext *  s,
Picture *  pic 
)

Deallocate a picture.

Definition at line 441 of file mpegvideo.c.

Referenced by alloc_frame_buffer(), ff_alloc_picture(), ff_find_unused_picture(), ff_h263_round_chroma(), ff_mpeg_flush(), ff_mpeg_ref_picture(), ff_mpeg_update_thread_context(), ff_MPV_common_end(), ff_MPV_frame_end(), ff_MPV_frame_start(), ff_release_unused_pictures(), and select_input_picture().

int ff_mpeg_update_thread_context ( AVCodecContext *  dst,
const AVCodecContext *  src 
)

Definition at line 658 of file mpegvideo.c.

Referenced by ff_rv34_decode_update_thread_context(), and mpeg_decode_update_thread_context().

void ff_MPV_common_defaults ( MpegEncContext *  s)

Set the given MpegEncContext to common defaults (same for encoding and decoding).

The changed fields will not depend upon the prior state of the MpegEncContext.

Definition at line 800 of file mpegvideo.c.

Referenced by ff_MPV_decode_defaults(), and MPV_encode_defaults().

void ff_MPV_common_end ( MpegEncContext *  s)

Definition at line 1244 of file mpegvideo.c.

Referenced by ff_h263_decode_end(), ff_h263_decode_frame(), ff_MPV_common_frame_size_change(), ff_MPV_common_init(), ff_MPV_encode_end(), ff_rv34_decode_end(), ff_vc1_decode_end(), h261_decode_end(), h261_decode_frame(), mpeg_decode_end(), mpeg_decode_postinit(), rv10_decode_end(), rv20_decode_picture_header(), and vcr2_init_sequence().

int ff_MPV_common_frame_size_change ( MpegEncContext *  s)

Definition at line 1171 of file mpegvideo.c.

Referenced by ff_h263_decode_frame(), ff_mpeg_update_thread_context(), ff_rv34_decode_frame(), and ff_rv34_decode_update_thread_context().

av_cold int ff_MPV_common_init ( MpegEncContext *  s)

init common structure for both encoder and decoder.

this assumes that some variables like width/height are already set

Definition at line 993 of file mpegvideo.c.

Referenced by ff_h263_decode_frame(), ff_h263_decode_init(), ff_mpeg_update_thread_context(), ff_MPV_encode_init(), ff_rv34_decode_init(), ff_rv34_decode_init_thread_copy(), h261_decode_frame(), mpeg_decode_postinit(), rv10_decode_init(), rv20_decode_picture_header(), and vcr2_init_sequence().

void ff_MPV_decode_defaults ( MpegEncContext *  s)

Set the given MpegEncContext to defaults for decoding.

the changed fields will not depend upon the prior state of the MpegEncContext.

Definition at line 826 of file mpegvideo.c.

Referenced by ff_h263_decode_init(), ff_rv34_decode_init(), h261_decode_init(), mpeg_decode_init(), and rv10_decode_init().

void ff_MPV_decode_mb ( MpegEncContext *  s,
int16_t  block[12][64] 
)

Definition at line 2907 of file mpegvideo.c.

Referenced by decode_slice(), encode_mb_hq(), encode_thread(), h261_decode_mb(), h261_decode_mb_skipped(), mpeg_decode_slice(), mpeg_er_decode_mb(), and rv10_decode_packet().

int ff_mpv_export_qp_table ( MpegEncContext *  s,
AVFrame *  f,
Picture *  p,
int  qp_type 
)

Definition at line 2170 of file mpegvideo.c.

Referenced by ff_h263_decode_frame(), finish_frame(), rv10_decode_frame(), and slice_end().

void ff_MPV_frame_end ( MpegEncContext *  s)

Definition at line 1717 of file mpegvideo.c.

Referenced by decode_wmv9(), ff_h263_decode_frame(), ff_MPV_encode_picture(), ff_rv34_decode_frame(), finish_frame(), h261_decode_frame(), rv10_decode_frame(), rv10_decode_packet(), slice_end(), and vc1_decode_frame().

int ff_mpv_frame_size_alloc ( MpegEncContext *  s,
int  linesize 
)

Definition at line 204 of file mpegvideo.c.

Referenced by alloc_frame_buffer(), encode_picture_lossless(), ff_mpeg_update_thread_context(), and ff_update_duplicate_context().

int ff_MPV_frame_start ( MpegEncContext *  s,
AVCodecContext *  avctx 
)

generic function for encode/decode called after coding/decoding the header and before a frame is coded/decoded.

Definition at line 1493 of file mpegvideo.c.

Referenced by decode_wmv9(), ff_h263_decode_frame(), ff_MPV_encode_picture(), ff_rv34_decode_frame(), h261_decode_frame(), mpeg_field_start(), rv10_decode_packet(), and vc1_decode_frame().

int ff_MPV_lowest_referenced_row ( MpegEncContext *  s,
int  dir 
)

find the lowest MB row referenced in the MVs

Definition at line 2560 of file mpegvideo.c.

Referenced by MPV_decode_mb_internal().

void ff_MPV_report_decode_progress ( MpegEncContext *  s)

Definition at line 3314 of file mpegvideo.c.

Referenced by decode_slice(), and mpeg_decode_slice().

void ff_print_debug_info ( MpegEncContext *  s,
Picture *  p,
AVFrame *  pict 
)

Definition at line 2164 of file mpegvideo.c.

Referenced by ff_h263_decode_frame(), finish_frame(), h261_decode_frame(), rv10_decode_frame(), slice_end(), and vc1_decode_frame().

void ff_print_debug_info2 ( AVCodecContext *  avctx,
Picture *  p,
AVFrame *  pict,
uint8_t *  mbskip_table,
int *  low_delay,
int  mb_width,
int  mb_height,
int  mb_stride,
int  quarter_sample 
)

Print debugging info for the given picture.

Definition at line 1878 of file mpegvideo.c.

Referenced by decode_frame(), and ff_print_debug_info().

void ff_release_unused_pictures ( MpegEncContext *  s,
int  remove_current 
)

Definition at line 1396 of file mpegvideo.c.

Referenced by ff_MPV_frame_start().

void ff_set_qscale ( MpegEncContext *  s,
int  qscale 
)

set qscale and update qscale dependent variables.

Definition at line 3300 of file mpegvideo.c.

Referenced by decode_slice(), encode_mb_internal(), encode_thread(), ff_h261_encode_mb(), h261_decode_gob(), h261_decode_mb(), h263_decode_dquant(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), mpeg4_decode_partition_b(), mpeg4_decode_partitioned_mb(), and rv10_decode_packet().

int ff_update_duplicate_context ( MpegEncContext *  dst,
MpegEncContext *  src 
)

Definition at line 635 of file mpegvideo.c.

Referenced by decode_chunks(), and encode_picture().

static int find_unused_picture ( MpegEncContext *  s,
int  shared 
)
static

Definition at line 1420 of file mpegvideo.c.

Referenced by ff_find_unused_picture().

static int free_context_frame ( MpegEncContext *  s)
static

Frees and resets MpegEncContext fields depending on the resolution.

Is used during resolution changes to avoid a full reinitialization of the codec.

Definition at line 1120 of file mpegvideo.c.

Referenced by ff_MPV_common_end(), and ff_MPV_common_frame_size_change().

static void free_duplicate_context ( MpegEncContext *  s)
static

Definition at line 588 of file mpegvideo.c.

Referenced by ff_MPV_common_end(), and ff_MPV_common_frame_size_change().

static void free_picture_tables ( Picture *  pic)
static

Definition at line 293 of file mpegvideo.c.

Referenced by ff_alloc_picture(), ff_find_unused_picture(), and ff_MPV_common_end().

static int hpel_motion_lowres ( MpegEncContext *  s,
uint8_t *  dest,
uint8_t *  src,
int  field_based,
int  field_select,
int  src_x,
int  src_y,
int  width,
int  height,
int  stride,
int  h_edge_pos,
int  v_edge_pos,
int  w,
int  h,
h264_chroma_mc_func *  pix_op,
int  motion_x,
int  motion_y 
)
inlinestatic

Definition at line 2182 of file mpegvideo.c.

Referenced by MPV_motion_lowres().

static int init_context_frame ( MpegEncContext *  s)
static

Initialize and allocates MpegEncContext fields dependent on the resolution.

Definition at line 871 of file mpegvideo.c.

Referenced by ff_MPV_common_frame_size_change(), and ff_MPV_common_init().

static int init_duplicate_context ( MpegEncContext *  s)
static

Definition at line 543 of file mpegvideo.c.

Referenced by ff_MPV_common_frame_size_change(), and ff_MPV_common_init().

static int init_er ( MpegEncContext *  s)
static

Definition at line 831 of file mpegvideo.c.

Referenced by init_context_frame().

static int make_tables_writable ( Picture *  pic)
static

Definition at line 355 of file mpegvideo.c.

Referenced by ff_alloc_picture().

static void mpeg_er_decode_mb ( void *  opaque,
int  ref,
int  mv_dir,
int  mv_type,
int(*)  mv[2][4][2],
int  mb_x,
int  mb_y,
int  mb_intra,
int  mb_skipped 
)
static

Definition at line 132 of file mpegvideo.c.

Referenced by init_er().

static av_always_inline void mpeg_motion_lowres ( MpegEncContext *  s,
uint8_t *  dest_y,
uint8_t *  dest_cb,
uint8_t *  dest_cr,
int  field_based,
int  bottom_field,
int  field_select,
uint8_t **  ref_picture,
h264_chroma_mc_func *  pix_op,
int  motion_x,
int  motion_y,
int  h,
int  mb_y 
)
static

Definition at line 2229 of file mpegvideo.c.

Referenced by MPV_motion_lowres().

static av_always_inline void MPV_decode_mb_internal ( MpegEncContext *  s,
int16_t  block[12][64],
int  lowres_flag,
int  is_mpeg12 
)
static

Definition at line 2666 of file mpegvideo.c.

Referenced by ff_MPV_decode_mb().

static void MPV_motion_lowres ( MpegEncContext *  s,
uint8_t *  dest_y,
uint8_t *  dest_cb,
uint8_t *  dest_cr,
int  dir,
uint8_t **  ref_picture,
h264_chroma_mc_func *  pix_op 
)
inlinestatic

motion compensation of a single macroblock

Parameters
scontext
dest_yluma destination pointer
dest_cbchroma cb/u destination pointer
dest_crchroma cr/v destination pointer
dirdirection (0->forward, 1->backward)
ref_picturearray[3] of pointers to the 3 planes of the reference picture
pix_ophalfpel motion compensation function (average or put normally) the motion vectors are taken from s->mv and the MV type from s->mv_type

Definition at line 2426 of file mpegvideo.c.

Referenced by MPV_decode_mb_internal().

static int pic_is_unused ( MpegEncContext *  s,
Picture *  pic 
)
inlinestatic

Definition at line 1409 of file mpegvideo.c.

Referenced by find_unused_picture().

static void put_dct ( MpegEncContext *  s,
int16_t *  block,
int  i,
uint8_t *  dest,
int  line_size,
int  qscale 
)
inlinestatic

Definition at line 2596 of file mpegvideo.c.

Referenced by MPV_decode_mb_internal().

static void update_noise_reduction ( MpegEncContext *  s)
static

Definition at line 1468 of file mpegvideo.c.

Referenced by ff_MPV_frame_start().

static int update_picture_tables ( Picture *  dst,
Picture *  src 
)
static

Definition at line 460 of file mpegvideo.c.

Referenced by ff_mpeg_ref_picture().

Variable Documentation

const uint8_t ff_default_chroma_qscale_table[32]
static
Initial value:
= {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
}

Definition at line 66 of file mpegvideo.c.

Referenced by ff_MPV_common_defaults().

const uint8_t ff_mpeg1_dc_scale_table[128]
Initial value:
= {
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
}

Definition at line 72 of file mpegvideo.c.

Referenced by ff_flv_decode_picture_header(), ff_flv_encode_picture_header(), ff_h261_encode_init(), ff_h263_decode_picture_header(), ff_h263_encode_init(), ff_h263_encode_picture_header(), ff_h263_round_chroma(), ff_intel_h263_decode_picture_header(), ff_MPV_common_defaults(), ff_msmpeg4_common_init(), ff_rv20_encode_picture_header(), and rv10_decode_packet().

const uint8_t* const ff_mpeg2_dc_scale_table[4]
Initial value:
= {
ff_mpeg1_dc_scale_table,
mpeg2_dc_scale_table1,
mpeg2_dc_scale_table2,
mpeg2_dc_scale_table3,
}
mpeg2_dc_scale_table3
static const uint8_t mpeg2_dc_scale_table3[128]
Definition: mpegvideo.c:108
ff_mpeg1_dc_scale_table
const uint8_t ff_mpeg1_dc_scale_table[128]
Definition: mpegvideo.c:72
mpeg2_dc_scale_table1
static const uint8_t mpeg2_dc_scale_table1[128]
Definition: mpegvideo.c:84
mpeg2_dc_scale_table2
static const uint8_t mpeg2_dc_scale_table2[128]
Definition: mpegvideo.c:96

Definition at line 120 of file mpegvideo.c.

Referenced by encode_picture(), ff_h263_round_chroma(), and ff_mpeg12_common_init().

enum AVPixelFormat ff_pixfmt_list_420[]
Initial value:
= {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_NONE
}
AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:68

Definition at line 127 of file mpegvideo.c.

const uint8_t mpeg2_dc_scale_table1[128]
static
Initial value:
= {
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
}

Definition at line 84 of file mpegvideo.c.

const uint8_t mpeg2_dc_scale_table2[128]
static
Initial value:
= {
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
}

Definition at line 96 of file mpegvideo.c.

const uint8_t mpeg2_dc_scale_table3[128]
static
Initial value:
= {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
}

Definition at line 108 of file mpegvideo.c.

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