FFmpeg
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The simplest mpeg encoder (well, it was the simplest!). More...
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/motion_vector.h"
#include "libavutil/timer.h"
#include "avcodec.h"
#include "blockdsp.h"
#include "h264chroma.h"
#include "idctdsp.h"
#include "internal.h"
#include "mathops.h"
#include "mpeg_er.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "mpegvideodata.h"
#include "mjpegenc.h"
#include "msmpeg4.h"
#include "qpeldsp.h"
#include "thread.h"
#include "wmv2.h"
#include <limits.h>
Go to the source code of this file.
Macros | |
#define | COPY(a) bak->a = src->a |
#define | UPDATE_PICTURE(pic) |
#define | REBASE_PICTURE(pic, new_ctx, old_ctx) |
#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 | gray16 (uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h) |
static void | gray8 (uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h) |
static av_cold int | dct_init (MpegEncContext *s) |
av_cold void | ff_mpv_idct_init (MpegEncContext *s) |
static int | alloc_picture (MpegEncContext *s, Picture *pic, int shared) |
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... | |
void | ff_mpv_decode_init (MpegEncContext *s, AVCodecContext *avctx) |
static int | init_context_frame (MpegEncContext *s) |
Initialize and allocates MpegEncContext fields dependent on the resolution. More... | |
static void | clear_context (MpegEncContext *s) |
av_cold int | ff_mpv_common_init (MpegEncContext *s) |
init common structure for both encoder and decoder. More... | |
static void | 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) |
static void | gray_frame (AVFrame *frame) |
int | ff_mpv_frame_start (MpegEncContext *s, AVCodecContext *avctx) |
generic function called after decoding the header and before a frame is decoded. More... | |
void | ff_mpv_frame_end (MpegEncContext *s) |
static int | clip_line (int *sx, int *sy, int *ex, int *ey, int maxx) |
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, int tail, int direction) |
Draw an arrow from (ex, ey) -> (sx, sy). More... | |
static int | add_mb (AVMotionVector *mb, uint32_t mb_type, int dst_x, int dst_y, int src_x, int src_y, int direction) |
void | ff_print_debug_info2 (AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_table, uint32_t *mbtype_table, int8_t *qscale_table, int16_t(*motion_val[2])[2], 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, ptrdiff_t 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... | |
static int | 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_mpeg_draw_horiz_band (MpegEncContext *s, int y, int h) |
void | ff_init_block_index (MpegEncContext *s) |
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) |
The simplest mpeg encoder (well, it was the simplest!).
Definition in file mpegvideo.c.
Referenced by backup_duplicate_context().
#define UPDATE_PICTURE | ( | pic | ) |
Referenced by ff_mpeg_update_thread_context().
#define REBASE_PICTURE | ( | pic, | |
new_ctx, | |||
old_ctx | |||
) |
Referenced by ff_mpeg_update_thread_context().
#define COLOR | ( | theta, | |
r | |||
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Referenced by ff_print_debug_info2().
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Definition at line 53 of file mpegvideo.c.
Referenced by dct_init().
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Definition at line 82 of file mpegvideo.c.
Referenced by dct_init().
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Definition at line 111 of file mpegvideo.c.
Referenced by dct_init().
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Definition at line 138 of file mpegvideo.c.
Referenced by dct_init().
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Definition at line 169 of file mpegvideo.c.
Referenced by dct_init().
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Definition at line 200 of file mpegvideo.c.
Referenced by dct_init().
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Definition at line 234 of file mpegvideo.c.
Referenced by dct_init().
Definition at line 261 of file mpegvideo.c.
Referenced by dct_init().
Definition at line 267 of file mpegvideo.c.
Referenced by dct_init().
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Definition at line 274 of file mpegvideo.c.
Referenced by ff_mpv_common_init().
av_cold void ff_mpv_idct_init | ( | MpegEncContext * | s | ) |
Definition at line 321 of file mpegvideo.c.
Referenced by dnxhd_encode_init(), ff_h263_decode_frame(), ff_h263_decode_init(), ff_mpeg4_workaround_bugs(), ff_mpeg_update_thread_context(), ff_mpv_encode_init(), ff_rv34_decode_init(), ff_rv34_decode_init_thread_copy(), h261_decode_frame(), mpeg_decode_init(), rv10_decode_init(), and vcr2_init_sequence().
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Definition at line 339 of file mpegvideo.c.
Referenced by ff_mpv_frame_start().
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Definition at line 347 of file mpegvideo.c.
Referenced by ff_mpv_common_frame_size_change(), and ff_mpv_common_init().
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Definition at line 399 of file mpegvideo.c.
Referenced by ff_mpv_common_end(), and ff_mpv_common_frame_size_change().
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Definition at line 419 of file mpegvideo.c.
Referenced by ff_update_duplicate_context().
int ff_update_duplicate_context | ( | MpegEncContext * | dst, |
MpegEncContext * | src | ||
) |
Definition at line 446 of file mpegvideo.c.
Referenced by decode_chunks(), and encode_picture().
int ff_mpeg_update_thread_context | ( | AVCodecContext * | dst, |
const AVCodecContext * | src | ||
) |
Definition at line 474 of file mpegvideo.c.
Referenced by ff_rv34_decode_update_thread_context(), mpeg4_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 625 of file mpegvideo.c.
Referenced by ff_mpv_decode_defaults(), and mpv_encode_defaults().
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 648 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_init | ( | MpegEncContext * | s, |
AVCodecContext * | avctx | ||
) |
Definition at line 653 of file mpegvideo.c.
Referenced by ff_h263_decode_init(), ff_rv34_decode_init(), h261_decode_init(), mpeg_decode_init(), and rv10_decode_init().
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Initialize and allocates MpegEncContext fields dependent on the resolution.
Definition at line 668 of file mpegvideo.c.
Referenced by ff_mpv_common_frame_size_change(), and ff_mpv_common_init().
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Definition at line 788 of file mpegvideo.c.
Referenced by ff_mpv_common_init().
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 868 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(), rv10_decode_init(), rv20_decode_picture_header(), svq1_encode_init(), and vcr2_init_sequence().
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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 978 of file mpegvideo.c.
Referenced by ff_mpv_common_end(), and ff_mpv_common_frame_size_change().
int ff_mpv_common_frame_size_change | ( | MpegEncContext * | s | ) |
Definition at line 1027 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().
void ff_mpv_common_end | ( | MpegEncContext * | s | ) |
Definition at line 1106 of file mpegvideo.c.
Referenced by ff_h263_decode_end(), ff_mpv_common_frame_size_change(), ff_mpv_common_init(), ff_mpv_encode_end(), ff_rv34_decode_end(), ff_rv34_decode_init(), ff_rv34_decode_init_thread_copy(), ff_vc1_decode_end(), h261_decode_end(), h261_decode_frame(), mpeg_decode_end(), rv10_decode_end(), rv20_decode_picture_header(), svq1_encode_end(), vc1_decode_frame(), and vcr2_init_sequence().
Definition at line 1160 of file mpegvideo.c.
Referenced by ff_mpv_frame_start().
int ff_mpv_frame_start | ( | MpegEncContext * | s, |
AVCodecContext * | avctx | ||
) |
generic function called after decoding the header and before a frame is decoded.
Definition at line 1180 of file mpegvideo.c.
Referenced by decode_wmv9(), ff_h263_decode_frame(), ff_rv34_decode_frame(), h261_decode_frame(), mpeg_field_start(), rv10_decode_packet(), and vc1_decode_frame().
void ff_mpv_frame_end | ( | MpegEncContext * | s | ) |
Definition at line 1415 of file mpegvideo.c.
Referenced by decode_wmv9(), ff_h263_decode_frame(), ff_rv34_decode_frame(), finish_frame(), h261_decode_frame(), rv10_decode_frame(), rv10_decode_packet(), slice_end(), and vc1_decode_frame().
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Definition at line 1425 of file mpegvideo.c.
Referenced by draw_line().
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Draw a line from (ex, ey) -> (sx, sy).
w | width of the image |
h | height of the image |
stride | stride/linesize of the image |
color | color of the arrow |
Definition at line 1454 of file mpegvideo.c.
Referenced by draw_arrow().
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Draw an arrow from (ex, ey) -> (sx, sy).
w | width of the image |
h | height of the image |
stride | stride/linesize of the image |
color | color of the arrow |
Definition at line 1512 of file mpegvideo.c.
Referenced by ff_print_debug_info2().
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Definition at line 1551 of file mpegvideo.c.
Referenced by ff_print_debug_info2().
void ff_print_debug_info2 | ( | AVCodecContext * | avctx, |
AVFrame * | pict, | ||
uint8_t * | mbskip_table, | ||
uint32_t * | mbtype_table, | ||
int8_t * | qscale_table, | ||
int16_t(*[2]) | motion_val[2], | ||
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 1570 of file mpegvideo.c.
Referenced by ff_print_debug_info(), and h264_decode_frame().
void ff_print_debug_info | ( | MpegEncContext * | s, |
Picture * | p, | ||
AVFrame * | pict | ||
) |
Definition at line 1950 of file mpegvideo.c.
Referenced by ff_h263_decode_frame(), finish_frame(), h261_decode_frame(), rv10_decode_frame(), slice_end(), and vc1_decode_frame().
int ff_mpv_export_qp_table | ( | MpegEncContext * | s, |
AVFrame * | f, | ||
Picture * | p, | ||
int | qp_type | ||
) |
Definition at line 1957 of file mpegvideo.c.
Referenced by ff_h263_decode_frame(), finish_frame(), rv10_decode_frame(), and slice_end().
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Definition at line 1969 of file mpegvideo.c.
Referenced by MPV_motion_lowres().
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Definition at line 2016 of file mpegvideo.c.
Referenced by MPV_motion_lowres().
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Definition at line 2153 of file mpegvideo.c.
Referenced by MPV_motion_lowres().
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motion compensation of a single macroblock
s | context |
dest_y | luma destination pointer |
dest_cb | chroma cb/u destination pointer |
dest_cr | chroma cr/v destination pointer |
dir | direction (0->forward, 1->backward) |
ref_picture | array[3] of pointers to the 3 planes of the reference picture |
pix_op | halfpel 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 2221 of file mpegvideo.c.
Referenced by mpv_decode_mb_internal().
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find the lowest MB row referenced in the MVs
Definition at line 2355 of file mpegvideo.c.
Referenced by mpv_decode_mb_internal().
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Definition at line 2391 of file mpegvideo.c.
Referenced by mpv_decode_mb_internal().
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Definition at line 2399 of file mpegvideo.c.
Referenced by mpv_decode_mb_internal().
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Definition at line 2407 of file mpegvideo.c.
Referenced by mpv_decode_mb_internal().
void ff_clean_intra_table_entries | ( | MpegEncContext * | s | ) |
Clean dc, ac, coded_block for the current non-intra MB.
Definition at line 2420 of file mpegvideo.c.
Referenced by encode_thread(), mpeg4_decode_partition_a(), and mpv_decode_mb_internal().
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Definition at line 2461 of file mpegvideo.c.
Referenced by ff_mpv_decode_mb().
void ff_mpv_decode_mb | ( | MpegEncContext * | s, |
int16_t | block[12][64] | ||
) |
Definition at line 2709 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().
void ff_mpeg_draw_horiz_band | ( | MpegEncContext * | s, |
int | y, | ||
int | h | ||
) |
Definition at line 2721 of file mpegvideo.c.
Referenced by decode_slice(), dxva2_mpeg2_end_frame(), dxva2_vc1_end_frame(), ff_intrax8_decode_picture(), 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_init_block_index | ( | MpegEncContext * | s | ) |
Definition at line 2728 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(), and rv34_decode_slice().
void ff_mpeg_flush | ( | AVCodecContext * | avctx | ) |
Definition at line 2760 of file mpegvideo.c.
Referenced by decode_wmv9(), and flush().
void ff_set_qscale | ( | MpegEncContext * | s, |
int | qscale | ||
) |
set qscale and update qscale dependent variables.
Definition at line 2791 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().
void ff_mpv_report_decode_progress | ( | MpegEncContext * | s | ) |
Definition at line 2805 of file mpegvideo.c.
Referenced by decode_slice(), and mpeg_decode_slice().