20 #ifndef AVCODEC_H263_H
21 #define AVCODEC_H263_H
30 #define FF_ASPECT_EXTENDED 15
31 #define INT_BIT (CHAR_BIT * sizeof(int))
37 #define H263_MV_VLC_BITS 9
38 #define INTRA_MCBPC_VLC_BITS 6
39 #define INTER_MCBPC_VLC_BITS 7
40 #define CBPY_VLC_BITS 6
41 #define TEX_VLC_BITS 9
43 #define H263_GOB_HEIGHT(h) ((h) <= 400 ? 1 : (h) <= 800 ? 2 : 4)
57 void *
data,
int *got_frame,
62 int motion_x,
int motion_y);
88 int16_t
block[6][64]);
103 int bit_size,
code, sign;
108 bit_size = f_code - 1;
112 val = (
val ^ sign) - sign;
132 int16_t
block[6][64],
133 int motion_x,
int motion_y){
137 int best_cbpy_score= INT_MAX;
138 int best_cbpc_score= INT_MAX;
139 int cbpc = (-1), cbpy= (-1);
145 if(
i&1) score +=
s->coded_score[5];
146 if(
i&2) score +=
s->coded_score[4];
148 if(score < best_cbpc_score){
149 best_cbpc_score= score;
156 if(
i&1) score +=
s->coded_score[3];
157 if(
i&2) score +=
s->coded_score[2];
158 if(
i&4) score +=
s->coded_score[1];
159 if(
i&8) score +=
s->coded_score[0];
161 if(score < best_cbpy_score){
162 best_cbpy_score= score;
167 if ((motion_x | motion_y |
s->dquant) == 0 &&
s->mv_type==
MV_TYPE_16X16){
168 if(best_cbpy_score + best_cbpc_score + 2*lambda >= 0)
172 for (
i = 0;
i < 6;
i++) {
173 if (
s->block_last_index[
i] >= 0 && ((cbp >> (5 -
i))&1)==0 ){
174 s->block_last_index[
i]= -1;
175 s->bdsp.clear_block(
s->block[
i]);
180 for (
i = 0;
i < 6;
i++) {
181 if (
s->block_last_index[
i] >= 0)
static double val(void *priv, double ch)
bitstream reader API header.
#define AV_CODEC_FLAG2_NO_OUTPUT
Skip bitstream encoding.
int av_const h263_get_picture_format(int width, int height)
Return the value of the 3-bit "source format" syntax element.
void ff_h263_pred_acdc(MpegEncContext *s, int16_t *block, int n)
void ff_h263_update_motion_val(MpegEncContext *s)
void ff_clean_h263_qscales(MpegEncContext *s)
modify qscale so that encoding is actually possible in H.263 (limit difference to -2....
int ff_h263_decode_mba(MpegEncContext *s)
void ff_h263_encode_picture_header(MpegEncContext *s, int picture_number)
VLC ff_h263_intra_MCBPC_vlc
int ff_intel_h263_decode_picture_header(MpegEncContext *s)
static void ff_h263_encode_motion_vector(MpegEncContext *s, int x, int y, int f_code)
void ff_h263_encode_motion(PutBitContext *pb, int val, int f_code)
int ff_h263_resync(MpegEncContext *s)
Decode the group of blocks / video packet header / slice header (MPEG-4 Studio).
int ff_h263_pred_dc(MpegEncContext *s, int n, int16_t **dc_val_ptr)
void ff_h263_decode_init_vlc(void)
void ff_h263_show_pict_info(MpegEncContext *s)
Print picture info if FF_DEBUG_PICT_INFO is set.
void ff_h263_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
enum AVPixelFormat ff_h263_hwaccel_pixfmt_list_420[]
int ff_h263_decode_motion(MpegEncContext *s, int pred, int f_code)
VLC ff_h263_inter_MCBPC_vlc
int ff_h263_decode_mb(MpegEncContext *s, int16_t block[6][64])
void ff_h263_init_rl_inter(void)
int ff_h263_decode_gob_header(MpegEncContext *s)
int ff_h263_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
void ff_h263_loop_filter(MpegEncContext *s)
av_const int ff_h263_aspect_to_info(AVRational aspect)
Return the 4 bit value that specifies the given aspect ratio.
int ff_h263_decode_end(AVCodecContext *avctx)
void ff_h263_encode_init(MpegEncContext *s)
static int get_p_cbp(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
static int h263_get_motion_length(int val, int f_code)
void ff_h263_encode_mba(MpegEncContext *s)
void ff_init_qscale_tab(MpegEncContext *s)
init s->current_picture.qscale_table from s->lambda_table
int16_t * ff_h263_pred_motion(MpegEncContext *s, int block, int dir, int *px, int *py)
int ff_h263_decode_init(AVCodecContext *avctx)
void ff_h263_encode_gob_header(MpegEncContext *s, int mb_line)
Encode a group of blocks header.
int ff_h263_decode_picture_header(MpegEncContext *s)
const uint8_t ff_mvtab[33][2]
const uint8_t ff_h263_inter_MCBPC_bits[28]
const uint8_t ff_h263_cbpy_tab[16][2]
static av_const int sign_extend(int val, unsigned bits)
#define FF_MPV_FLAG_CBP_RD
#define MV_TYPE_16X16
1 vector for the whole mb
AVPixelFormat
Pixel format.
static void skip_put_bits(PutBitContext *s, int n)
Skip the given number of bits.
Utilties for rational number calculation.
static const float pred[4]
main external API structure.
This structure stores compressed data.
Rational number (pair of numerator and denominator).
static const uint8_t offset[127][2]