libavcodec/mpegvideo.c File Reference

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

#include "libavutil/intmath.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "dsputil.h"
#include "internal.h"
#include "mpegvideo.h"
#include "mjpegenc.h"
#include "msmpeg4.h"
#include "xvmc_internal.h"
#include "thread.h"
#include <limits.h>

Detailed Description

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

Definition in file mpegvideo.c.

Define Documentation

#define COLOR	(	theta,
		r		)

Value:

u = (int)(128 + r * cos(theta * 3.141592 / 180)); \
    v = (int)(128 + r * sin(theta * 3.141592 / 180));

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

Function Documentation

static void add_dct	(	MpegEncContext *	s,
		DCTELEM *	block,
		int	i,
		uint8_t *	dest,
		int	line_size
	)			`[inline, static]`

Definition at line 2380 of file mpegvideo.c.

Referenced by MPV_decode_mb_internal().

static void add_dequant_dct	(	MpegEncContext *	s,
		DCTELEM *	block,
		int	i,
		uint8_t *	dest,
		int	line_size,
		int	qscale
	)			`[inline, static]`

Definition at line 2388 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 243 of file mpegvideo.c.

Referenced by ff_alloc_picture().

const uint8_t* avpriv_mpv_find_start_code	(	const uint8_t *av_restrict	p,
		const uint8_t *	end,
		uint32_t *av_restrict	state
	)

Definition at line 141 of file mpegvideo.c.

Referenced by cavs_decode_frame(), decode_chunks(), ff_mpeg1_find_frame_end(), ff_rtp_send_mpegvideo(), mpeg_decode_slice(), mpegts_write_packet_internal(), mpegvideo_extract_headers(), parse_nal_units(), and slice_decode_thread().

static void backup_duplicate_context	(	MpegEncContext *	bak,
		MpegEncContext *	src
	)			`[static]`

Definition at line 488 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
	)			`[inline, static]`

Definition at line 2138 of file mpegvideo.c.

Referenced by MPV_motion_lowres().

static void dct_unquantize_h263_inter_c	(	MpegEncContext *	s,
		DCTELEM *	block,
		int	n,
		int	qscale
	)			`[static]`

Definition at line 3006 of file mpegvideo.c.

Referenced by ff_dct_common_init().

static void dct_unquantize_h263_intra_c	(	MpegEncContext *	s,
		DCTELEM *	block,
		int	n,
		int	qscale
	)			`[static]`

Definition at line 2972 of file mpegvideo.c.

Referenced by ff_dct_common_init().

static void dct_unquantize_mpeg1_inter_c	(	MpegEncContext *	s,
		DCTELEM *	block,
		int	n,
		int	qscale
	)			`[static]`

Definition at line 2854 of file mpegvideo.c.

Referenced by ff_dct_common_init().

static void dct_unquantize_mpeg1_intra_c	(	MpegEncContext *	s,
		DCTELEM *	block,
		int	n,
		int	qscale
	)			`[static]`

Definition at line 2825 of file mpegvideo.c.

Referenced by ff_dct_common_init().

static void dct_unquantize_mpeg2_inter_c	(	MpegEncContext *	s,
		DCTELEM *	block,
		int	n,
		int	qscale
	)			`[static]`

Definition at line 2941 of file mpegvideo.c.

Referenced by ff_dct_common_init().

static void dct_unquantize_mpeg2_intra_bitexact	(	MpegEncContext *	s,
		DCTELEM *	block,
		int	n,
		int	qscale
	)			`[static]`

Definition at line 2910 of file mpegvideo.c.

Referenced by ff_dct_common_init().

static void dct_unquantize_mpeg2_intra_c	(	MpegEncContext *	s,
		DCTELEM *	block,
		int	n,
		int	qscale
	)			`[static]`

Definition at line 2883 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:

	w	width of the image
	h	height of the image
	stride	stride/linesize of the image
	color	color of the arrow

Definition at line 1638 of file mpegvideo.c.

Referenced by ff_print_debug_info().

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:

	w	width of the image
	h	height of the image
	stride	stride/linesize of the image
	color	color of the arrow

Definition at line 1585 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 294 of file mpegvideo.c.

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

void ff_clean_intra_table_entries ( MpegEncContext * s )

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

Definition at line 2401 of file mpegvideo.c.

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

void ff_copy_picture	(	Picture *	dst,
		Picture *	src
	)

Definition at line 218 of file mpegvideo.c.

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

av_cold int ff_dct_common_init ( MpegEncContext * s )

Definition at line 175 of file mpegvideo.c.

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

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

Parameters:

h

is the normal height, this will be reduced automatically if needed for the last row

Definition at line 2699 of file mpegvideo.c.

Referenced by decode_finish_row(), decode_slice(), ff_dxva2_common_end_frame(), ff_intrax8_decode_picture(), ff_vaapi_common_end_frame(), ff_vdpau_h264_picture_complete(), ff_vdpau_mpeg4_decode_picture(), ff_vdpau_mpeg_picture_complete(), ff_vdpau_vc1_decode_picture(), ff_xvmc_decode_mb(), ff_xvmc_field_end(), mpeg_decode_slice(), svq3_decode_frame(), vc1_decode_b_blocks(), vc1_decode_i_blocks(), vc1_decode_i_blocks_adv(), vc1_decode_p_blocks(), and vc1_decode_skip_blocks().

int ff_find_unused_picture	(	MpegEncContext *	s,
		int	shared
	)

Definition at line 1254 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 )

void ff_init_rl	(	RLTable *	rl,
		uint8_t	static_store[2][2 *MAX_RUN+MAX_LEVEL+3]
	)

Parameters:

static_store

static 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 1100 of file mpegvideo.c.

Referenced by decode_init(), encode_init(), ff_h261_encode_init(), ff_h263_decode_init_vlc(), ff_h263_encode_init(), ff_mpeg12_init_vlcs(), ff_mpeg1_encode_init(), ff_msmpeg4_decode_init(), ff_msmpeg4_encode_init(), and h261_decode_init_vlc().

void ff_init_vlc_rl ( RLTable * rl )

Definition at line 1152 of file mpegvideo.c.

void ff_mpeg_flush ( AVCodecContext * avctx )

Definition at line 2797 of file mpegvideo.c.

Referenced by decode_wmv9(), flush(), and flush_dpb().

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

Definition at line 531 of file mpegvideo.c.

Referenced by decode_update_thread_context(), 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 634 of file mpegvideo.c.

Referenced by ff_MPV_decode_defaults(), and MPV_encode_defaults().

void ff_MPV_common_end ( MpegEncContext * s )

int ff_MPV_common_frame_size_change ( MpegEncContext * s )

Definition at line 977 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 797 of file mpegvideo.c.

Referenced by decode_pic(), decode_slice_header(), 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_decode_init(), svq3_decode_init(), 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 663 of file mpegvideo.c.

Referenced by ff_cavs_init(), ff_h263_decode_init(), ff_h264_decode_init(), ff_rv34_decode_init(), h261_decode_init(), mpeg_decode_init(), rv10_decode_init(), and svq1_decode_init().

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

Definition at line 2685 of file mpegvideo.c.

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

void ff_MPV_frame_end ( MpegEncContext * s )

Definition at line 1506 of file mpegvideo.c.

Referenced by decode_wmv9(), ff_h263_decode_frame(), ff_MPV_encode_picture(), ff_rv34_decode_frame(), field_end(), finish_frame(), h261_decode_frame(), rv10_decode_frame(), rv10_decode_packet(), slice_end(), svq1_decode_frame(), svq3_decode_frame(), and vc1_decode_frame().

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 1293 of file mpegvideo.c.

Referenced by decode_wmv9(), ff_h263_decode_frame(), ff_h264_frame_start(), ff_MPV_encode_picture(), ff_rv34_decode_frame(), h261_decode_frame(), mpeg_field_start(), rv10_decode_packet(), svq1_decode_frame(), 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 2337 of file mpegvideo.c.

Referenced by MPV_decode_mb_internal().

void ff_MPV_report_decode_progress ( MpegEncContext * s )

Definition at line 3049 of file mpegvideo.c.

Referenced by decode_slice(), and mpeg_decode_slice().

void ff_print_debug_info	(	MpegEncContext *	s,
		AVFrame *	pict
	)

Print debugging info for the given picture.

Definition at line 1669 of file mpegvideo.c.

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

void ff_release_unused_pictures	(	MpegEncContext *	s,
		int	remove_current
	)

Definition at line 1192 of file mpegvideo.c.

Referenced by decode_slice_header(), and ff_MPV_frame_start().

void ff_set_qscale	(	MpegEncContext *	s,
		int	qscale
	)

set qscale and update qscale dependent variables.

Definition at line 3035 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_update_duplicate_context	(	MpegEncContext *	dst,
		MpegEncContext *	src
	)

Definition at line 515 of file mpegvideo.c.

Referenced by decode_chunks(), and encode_picture().

static int find_unused_picture	(	MpegEncContext *	s,
		int	shared
	)			`[static]`

Definition at line 1217 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 920 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 468 of file mpegvideo.c.

Referenced by ff_MPV_common_end(), and ff_MPV_common_frame_size_change().

static void free_frame_buffer	(	MpegEncContext *	s,
		Picture *	pic
	)			`[static]`

Release a frame buffer.

Definition at line 227 of file mpegvideo.c.

Referenced by alloc_frame_buffer(), ff_alloc_picture(), ff_mpeg_flush(), ff_MPV_frame_end(), ff_MPV_frame_start(), ff_release_unused_pictures(), and free_picture().

static void free_picture	(	MpegEncContext *	s,
		Picture *	pic
	)			`[static]`

Deallocate a picture.

Definition at line 383 of file mpegvideo.c.

Referenced by 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
	)			`[inline, static]`

Definition at line 1959 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 671 of file mpegvideo.c.

Referenced by ff_MPV_common_frame_size_change(), and ff_MPV_common_init().

static int init_duplicate_context	(	MpegEncContext *	s,
		MpegEncContext *	base
	)			`[static]`

Definition at line 417 of file mpegvideo.c.

Referenced by ff_MPV_common_frame_size_change(), and ff_MPV_common_init().

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 2006 of file mpegvideo.c.

Referenced by MPV_motion_lowres().

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

Definition at line 2442 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
	)			`[inline, static]`

motion compensation of a single macroblock

Parameters:

	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 2203 of file mpegvideo.c.

Referenced by MPV_decode_mb_internal().

static int pic_is_unused	(	MpegEncContext *	s,
		Picture *	pic
	)			`[inline, static]`

Definition at line 1207 of file mpegvideo.c.

Referenced by find_unused_picture().

static void put_dct	(	MpegEncContext *	s,
		DCTELEM *	block,
		int	i,
		uint8_t *	dest,
		int	line_size,
		int	qscale
	)			`[inline, static]`

Definition at line 2372 of file mpegvideo.c.

Referenced by MPV_decode_mb_internal().

static void update_noise_reduction ( MpegEncContext * s ) [static]

Definition at line 1268 of file mpegvideo.c.

Referenced by ff_MPV_frame_start().

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 67 of file mpegvideo.c.

Referenced by ff_MPV_common_defaults().

enum PixelFormat ff_hwaccel_pixfmt_list_420[]

Initial value:

 {
    PIX_FMT_DXVA2_VLD,
    PIX_FMT_VAAPI_VLD,
    PIX_FMT_VDA_VLD,
    PIX_FMT_YUV420P,
    PIX_FMT_NONE
}

Definition at line 133 of file mpegvideo.c.

Referenced by decode_slice_header().

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 73 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_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,
}

Definition at line 121 of file mpegvideo.c.

Referenced by encode_picture(), and ff_mpeg12_common_init().

enum PixelFormat ff_pixfmt_list_420[]

Initial value:

 {
    PIX_FMT_YUV420P,
    PIX_FMT_NONE
}

Definition at line 128 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 85 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 97 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 109 of file mpegvideo.c.


Defines
#define	COPY(a) bak->a = src->a
#define	COLOR(theta, r)
Functions
static void	dct_unquantize_mpeg1_intra_c (MpegEncContext s, DCTELEM block, int n, int qscale)
static void	dct_unquantize_mpeg1_inter_c (MpegEncContext s, DCTELEM block, int n, int qscale)
static void	dct_unquantize_mpeg2_intra_c (MpegEncContext s, DCTELEM block, int n, int qscale)
static void	dct_unquantize_mpeg2_intra_bitexact (MpegEncContext s, DCTELEM block, int n, int qscale)
static void	dct_unquantize_mpeg2_inter_c (MpegEncContext s, DCTELEM block, int n, int qscale)
static void	dct_unquantize_h263_intra_c (MpegEncContext s, DCTELEM block, int n, int qscale)
static void	dct_unquantize_h263_inter_c (MpegEncContext s, DCTELEM block, int n, int qscale)
const uint8_t *	avpriv_mpv_find_start_code (const uint8_t av_restrict p, const uint8_t end, uint32_t *av_restrict state)
av_cold int	ff_dct_common_init (MpegEncContext *s)
void	ff_copy_picture (Picture dst, Picture src)
static void	free_frame_buffer (MpegEncContext s, Picture pic)
	Release a frame buffer.
static int	alloc_frame_buffer (MpegEncContext s, Picture pic)
	Allocate a frame buffer.
int	ff_alloc_picture (MpegEncContext s, Picture pic, int shared)
	Allocate a Picture.
static void	free_picture (MpegEncContext s, Picture pic)
	Deallocate a picture.
static int	init_duplicate_context (MpegEncContext s, MpegEncContext base)
static void	free_duplicate_context (MpegEncContext *s)
static void	backup_duplicate_context (MpegEncContext bak, MpegEncContext src)
void	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).
void	ff_MPV_decode_defaults (MpegEncContext *s)
	Set the given MpegEncContext to defaults for decoding.
static int	init_context_frame (MpegEncContext *s)
	Initialize and allocates MpegEncContext fields dependent on the resolution.
av_cold int	ff_MPV_common_init (MpegEncContext *s)
	init common structure for both encoder and decoder.
static int	free_context_frame (MpegEncContext *s)
	Frees and resets MpegEncContext fields depending on the resolution.
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.
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).
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).
void	ff_print_debug_info (MpegEncContext s, AVFrame pict)
	Print debugging info for the given picture.
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
int	ff_MPV_lowest_referenced_row (MpegEncContext *s, int dir)
	find the lowest MB row referenced in the MVs
static void	put_dct (MpegEncContext s, DCTELEM block, int i, uint8_t *dest, int line_size, int qscale)
static void	add_dct (MpegEncContext s, DCTELEM block, int i, uint8_t *dest, int line_size)
static void	add_dequant_dct (MpegEncContext s, DCTELEM 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.
static av_always_inline void	MPV_decode_mb_internal (MpegEncContext *s, DCTELEM block[12][64], int lowres_flag, int is_mpeg12)
void	ff_MPV_decode_mb (MpegEncContext *s, DCTELEM block[12][64])
void	ff_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.
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 PixelFormat	ff_pixfmt_list_420 []
enum PixelFormat	ff_hwaccel_pixfmt_list_420 []

libavcodec/mpegvideo.c File Reference

Defines

Functions

Variables

Detailed Description

Define Documentation

Function Documentation

Variable Documentation