68 #define QUANT_BIAS_SHIFT 8
70 #define QMAT_SHIFT_MMX 16
89 const uint16_t *quant_matrix,
90 int bias,
int qmin,
int qmax,
int intra)
96 for (qscale = qmin; qscale <= qmax; qscale++) {
103 for (i = 0; i < 64; i++) {
105 int64_t den = (int64_t) qscale * quant_matrix[j];
115 for (i = 0; i < 64; i++) {
117 int64_t den =
ff_aanscales[i] * (int64_t) qscale * quant_matrix[j];
127 for (i = 0; i < 64; i++) {
129 int64_t den = (int64_t) qscale * quant_matrix[j];
140 if (
qmat16[qscale][0][i] == 0 ||
141 qmat16[qscale][0][i] == 128 * 256)
149 for (i = intra; i < 64; i++) {
154 while (((max * qmat[qscale][i]) >> shift) > INT_MAX) {
161 "Warning, QMAT_SHIFT is larger than %d, overflows possible\n",
170 int bestdiff=INT_MAX;
173 1,2,3,4,5,6,7,8,9,10,11,12,14,16,18,20,24,26,28
178 if (non_linear_qscale[i] < s->
avctx->
qmin ||
181 if (diff < bestdiff) {
183 best = non_linear_qscale[i];
203 for (i = 0; i < 64; i++) {
218 for (i = 0; i < s->
mb_num; i++) {
229 #define COPY(a) dst->a= src->a
254 for (i = -16; i < 16; i++) {
285 int i, ret, format_supported;
294 "only YUV420 and YUV422 are supported\n");
300 format_supported = 0;
309 format_supported = 1;
315 format_supported = 1;
317 if (!format_supported) {
352 "keyframe interval too large!, reducing it from %d to %d\n",
379 "intra dc precision must be positive, note some applications use"
380 " 0 and some 8 as base meaning 8bit, the value must not be smaller than that\n");
397 #if FF_API_MOTION_EST
451 av_log(avctx,
AV_LOG_ERROR,
"Either both buffer size and max rate or neither must be specified\n");
457 "Warning min_rate > 0 but min_rate != max_rate isn't recommended!\n");
474 "impossible bitrate constraints, this will fail\n");
499 "Warning vbv_delay will be set to 0xFFFF (=VBR) as the "
500 "specified vbv buffer is too large for the given bitrate!\n");
512 "OBMC is only supported with simple mb decision\n");
530 "max b frames must be 0 or positive for mpegvideo based encoders\n");
540 "Invalid pixel aspect ratio %i/%i, limit is 255/255 reducing\n",
548 (avctx->
width > 2048 ||
555 ((avctx->
width &3) ||
562 (avctx->
width > 4095 ||
569 (avctx->
width > 16383 ||
570 avctx->
height > 16383 )) {
571 av_log(avctx,
AV_LOG_ERROR,
"MPEG-2 does not support resolutions above 16383x16383\n");
606 "mpeg2 style quantization not supported by codec\n");
624 "closed gop with scene change detection are not supported yet, "
625 "set threshold to 1000000000\n");
632 "low delay forcing is only available for mpeg2\n");
637 "b frames cannot be used with low delay\n");
643 if (avctx->
qmax > 28) {
645 "non linear quant only supports qmax <= 28 currently\n");
657 "multi threaded encoding not supported by codec\n");
663 "automatic thread number detection not supported by codec, "
681 "notice: b_frame_strategy only affects the first pass\n");
704 av_log(avctx,
AV_LOG_ERROR,
"qmin and or qmax are invalid, they must be 0 < min <= max\n");
708 #if FF_API_QUANT_BIAS
724 "timebase %d/%d not supported by MPEG 4 standard, "
725 "the maximum admitted value for the timebase denominator "
759 "The specified picture size of %dx%d is not valid for the "
760 "H.261 codec.\nValid sizes are 176x144, 352x288\n",
775 "The specified picture size of %dx%d is not valid for "
776 "the H.263 codec.\nValid sizes are 128x96, 176x144, "
777 "352x288, 704x576, and 1408x1152. "
908 2 * 64 *
sizeof(uint16_t),
fail);
933 for (i = 0; i < 64; i++) {
968 #if FF_API_ERROR_RATE
975 #if FF_API_NORMALIZE_AQP
1080 for (y = 0; y < 16; y++) {
1081 for (x = 0; x < 16; x++) {
1082 acc +=
FFABS(src[x + y * stride] - ref);
1098 for (y = 0; y <
h; y += 16) {
1099 for (x = 0; x < w; x += 16) {
1104 int sae =
get_sae(src + offset, mean, stride);
1106 acc += sae + 500 < sad;
1124 int i, display_picture_number = 0, ret;
1139 "Invalid pts (%"PRId64
") <= last (%"PRId64
")\n",
1144 if (!s->
low_delay && display_picture_number == 1)
1153 "Warning: AVFrame.pts=? trying to guess (%"PRId64
")\n",
1156 pts = display_picture_number;
1162 if (!pic_arg->
buf[0] ||
1198 int h_chroma_shift, v_chroma_shift;
1203 for (i = 0; i < 3; i++) {
1204 int src_stride = pic_arg->
linesize[i];
1206 int h_shift = i ? h_chroma_shift : 0;
1207 int v_shift = i ? v_chroma_shift : 0;
1208 int w = s->
width >> h_shift;
1222 if (src_stride == dst_stride)
1223 memcpy(dst, src, src_stride * h);
1228 memcpy(dst2, src, w);
1264 int64_t score64 = 0;
1266 for (plane = 0; plane < 3; plane++) {
1268 const int bw = plane ? 1 : 2;
1269 for (y = 0; y < s->
mb_height * bw; y++) {
1270 for (x = 0; x < s->
mb_width * bw; x++) {
1271 int off = p->
shared ? 0 : 16;
1277 case 0: score =
FFMAX(score, v);
break;
1278 case 1: score +=
FFABS(v);
break;
1279 case 2: score64 += v * (int64_t)v;
break;
1280 case 3: score64 +=
FFABS(v * (int64_t)v * v);
break;
1281 case 4: score64 += (v * (int64_t)v) * (v * (int64_t)v);
break;
1304 int ret, got_output;
1321 int i, j, out_size, p_lambda, b_lambda,
lambda2;
1322 int64_t best_rd = INT64_MAX;
1323 int best_b_count = -1;
1335 b_lambda = p_lambda;
1360 pre_input = *pre_input_ptr;
1361 memcpy(data, pre_input_ptr->
f->
data,
sizeof(data));
1363 if (!pre_input.
shared && i) {
1431 return best_b_count;
1504 b_frames =
FFMAX(0, i - 1);
1507 for (i = 0; i < b_frames + 1; i++) {
1519 for (i = b_frames - 1; i >= 0; i--) {
1527 "warning, too many b frames in a row\n");
1550 for (i = 0; i < b_frames; i++) {
1596 for (i = 0; i < 4; i++) {
1648 #if FF_API_CODED_FRAME
1659 for (intra = 0; intra < 2; intra++) {
1661 for (i = 0; i < 64; i++) {
1667 for (i = 0; i < 64; i++) {
1718 for (i = 0; i < 4; i++) {
1749 const AVFrame *pic_arg,
int *got_packet)
1752 int i, stuffing_count, ret;
1781 for (i = 0; i < context_count; i++) {
1798 if (growing_buffer) {
1849 for (i = 0; i < context_count; i++) {
1864 for (i = 0; i < 4; i++) {
1884 if (stuffing_count) {
1886 stuffing_count + 50) {
1894 while (stuffing_count--) {
1901 stuffing_count -= 4;
1902 while (stuffing_count--) {
1928 "Internal error, negative bits\n");
1936 vbv_delay =
FFMAX(vbv_delay, min_delay);
1976 *got_packet = !!pkt->
size;
1981 int n,
int threshold)
1983 static const char tab[64] = {
1984 3, 2, 2, 1, 1, 1, 1, 1,
1985 1, 1, 1, 1, 1, 1, 1, 1,
1986 1, 1, 1, 1, 1, 1, 1, 1,
1987 0, 0, 0, 0, 0, 0, 0, 0,
1988 0, 0, 0, 0, 0, 0, 0, 0,
1989 0, 0, 0, 0, 0, 0, 0, 0,
1990 0, 0, 0, 0, 0, 0, 0, 0,
1991 0, 0, 0, 0, 0, 0, 0, 0
2000 if (threshold < 0) {
2002 threshold = -threshold;
2007 if (last_index <= skip_dc - 1)
2010 for (i = 0; i <= last_index; i++) {
2014 if (skip_dc && i == 0)
2018 }
else if (level > 1) {
2024 if (score >= threshold)
2026 for (i = skip_dc; i <= last_index; i++) {
2049 for (; i <= last_index; i++) {
2051 int level = block[j];
2053 if (level > maxlevel) {
2056 }
else if (level < minlevel) {
2066 "warning, clipping %d dct coefficients to %d..%d\n",
2067 overflow, minlevel, maxlevel);
2074 for (y = 0; y < 8; y++) {
2075 for (x = 0; x < 8; x++) {
2081 for (y2 =
FFMAX(y - 1, 0); y2 <
FFMIN(8, y + 2); y2++) {
2082 for (x2=
FFMAX(x - 1, 0); x2 <
FFMIN(8, x + 2); x2++) {
2083 int v = ptr[x2 + y2 *
stride];
2089 weight[x + 8 *
y]= (36 *
ff_sqrt(count * sqr - sum * sum)) / count;
2095 int motion_x,
int motion_y,
2096 int mb_block_height,
2101 int16_t orig[12][64];
2108 uint8_t *ptr_y, *ptr_cb, *ptr_cr;
2109 ptrdiff_t wrap_y, wrap_c;
2111 for (i = 0; i < mb_block_count; i++)
2115 const int last_qp = s->
qscale;
2116 const int mb_xy = mb_x + mb_y * s->
mb_stride;
2147 (mb_y * 16 * wrap_y) + mb_x * 16;
2149 (mb_y * mb_block_height * wrap_c) + mb_x * mb_block_width;
2151 (mb_y * mb_block_height * wrap_c) + mb_x * mb_block_width;
2159 16, 16, mb_x * 16, mb_y * 16,
2164 mb_block_width, mb_block_height,
2165 mb_x * mb_block_width, mb_y * mb_block_height,
2167 ptr_cb = ebuf + 16 * wrap_y;
2170 mb_block_width, mb_block_height,
2171 mb_x * mb_block_width, mb_y * mb_block_height,
2173 ptr_cr = ebuf + 16 * wrap_y + 16;
2178 int progressive_score, interlaced_score;
2183 NULL, wrap_y, 8) - 400;
2185 if (progressive_score > 0) {
2187 NULL, wrap_y * 2, 8) +
2189 NULL, wrap_y * 2, 8);
2190 if (progressive_score > interlaced_score) {
2193 dct_offset = wrap_y;
2194 uv_dct_offset = wrap_c;
2229 uint8_t *dest_y, *dest_cb, *dest_cr;
2231 dest_y = s->
dest[0];
2232 dest_cb = s->
dest[1];
2233 dest_cr = s->
dest[2];
2257 int progressive_score, interlaced_score;
2260 progressive_score = s->
mecc.
ildct_cmp[0](
s, dest_y, ptr_y, wrap_y, 8) +
2266 progressive_score -= 400;
2268 if (progressive_score > 0) {
2275 if (progressive_score > interlaced_score) {
2278 dct_offset = wrap_y;
2279 uv_dct_offset = wrap_c;
2290 dest_y + dct_offset, wrap_y);
2292 dest_y + dct_offset + 8, wrap_y);
2302 dest_cb + uv_dct_offset, wrap_c);
2304 dest_cr + uv_dct_offset, wrap_c);
2315 if (s->
mecc.
sad[1](
NULL, ptr_y + dct_offset, dest_y + dct_offset,
2316 wrap_y, 8) < 20 * s->
qscale)
2318 if (s->
mecc.
sad[1](
NULL, ptr_y + dct_offset + 8, dest_y + dct_offset + 8,
2319 wrap_y, 8) < 20 * s->
qscale)
2327 dest_cb + uv_dct_offset,
2328 wrap_c, 8) < 20 * s->
qscale)
2331 dest_cr + uv_dct_offset,
2332 wrap_c, 8) < 20 * s->
qscale)
2359 memcpy(orig[0], s->
block[0],
sizeof(int16_t) * 64 * mb_block_count);
2365 for (i = 0; i < mb_block_count; i++) {
2380 for (i = 0; i < mb_block_count; i++) {
2390 for (i = 0; i < 4; i++)
2393 for (i = 4; i < mb_block_count; i++)
2397 for (i = 0; i < mb_block_count; i++) {
2410 for (i=6; i<12; i++) {
2419 for (i = 0; i < mb_block_count; i++) {
2422 for (j = 63; j > 0; j--) {
2512 memcpy(d->
mv, s->
mv, 2*4*2*
sizeof(
int));
2550 int *dmin,
int *next_block,
int motion_x,
int motion_y)
2558 s->
pb= pb[*next_block];
2560 s->
pb2 = pb2 [*next_block];
2561 s->
tex_pb= tex_pb[*next_block];
2565 memcpy(dest_backup, s->
dest,
sizeof(s->
dest));
2588 memcpy(s->
dest, dest_backup,
sizeof(s->
dest));
2606 else if(w==8 && h==8)
2696 for(mb_x=0; mb_x < s->
mb_width; mb_x++) {
2704 (((unsigned) sum * sum) >> 8) + 500 + 128) >> 8;
2741 bytestream_put_le32(&ptr, offset);
2742 bytestream_put_byte(&ptr, s->
qscale);
2743 bytestream_put_byte(&ptr, gobn);
2744 bytestream_put_le16(&ptr, mba);
2745 bytestream_put_byte(&ptr, pred_x);
2746 bytestream_put_byte(&ptr, pred_y);
2748 bytestream_put_byte(&ptr, 0);
2749 bytestream_put_byte(&ptr, 0);
2784 int new_buffer_size = 0;
2881 for(mb_x=0; mb_x < s->
mb_width; mb_x++) {
2915 int current_packet_size, is_gob_start;
2921 if(s->
start_mb_y == mb_y && mb_y > 0 && mb_x==0) is_gob_start=1;
2930 if(s->
mb_x==0 && s->
mb_y!=0) is_gob_start=1;
2935 if(s->
mb_x==0 && s->
mb_y!=0) is_gob_start=1;
2955 current_packet_size=0;
3013 int pb_bits_count, pb2_bits_count, tex_pb_bits_count;
3020 backup_s.pb2= s->
pb2;
3021 backup_s.tex_pb= s->
tex_pb;
3030 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER, pb, pb2, tex_pb,
3031 &dmin, &next_block, s->
mv[0][0][0], s->
mv[0][0][1]);
3042 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER_I, pb, pb2, tex_pb,
3043 &dmin, &next_block, 0, 0);
3051 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_SKIPPED, pb, pb2, tex_pb,
3052 &dmin, &next_block, s->
mv[0][0][0], s->
mv[0][0][1]);
3062 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER4V, pb, pb2, tex_pb,
3063 &dmin, &next_block, 0, 0);
3071 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD, pb, pb2, tex_pb,
3072 &dmin, &next_block, s->
mv[0][0][0], s->
mv[0][0][1]);
3080 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD, pb, pb2, tex_pb,
3081 &dmin, &next_block, s->
mv[1][0][0], s->
mv[1][0][1]);
3091 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR, pb, pb2, tex_pb,
3092 &dmin, &next_block, 0, 0);
3103 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD_I, pb, pb2, tex_pb,
3104 &dmin, &next_block, 0, 0);
3115 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD_I, pb, pb2, tex_pb,
3116 &dmin, &next_block, 0, 0);
3122 for(dir=0; dir<2; dir++){
3129 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR_I, pb, pb2, tex_pb,
3130 &dmin, &next_block, 0, 0);
3138 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTRA, pb, pb2, tex_pb,
3139 &dmin, &next_block, 0, 0);
3150 const int last_qp= backup_s.qscale;
3154 static const int dquant_tab[4]={-1,1,-2,2};
3163 s->
mv[0][0][0] = best_s.
mv[0][0][0];
3164 s->
mv[0][0][1] = best_s.
mv[0][0][1];
3165 s->
mv[1][0][0] = best_s.
mv[1][0][0];
3166 s->
mv[1][0][1] = best_s.
mv[1][0][1];
3169 for(; qpi<4; qpi++){
3170 int dquant= dquant_tab[qpi];
3182 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER , pb, pb2, tex_pb,
3183 &dmin, &next_block, s->
mv[mvdir][0][0], s->
mv[mvdir][0][1]);
3199 backup_s.dquant = 0;
3203 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
3204 &dmin, &next_block, mx, my);
3207 backup_s.dquant = 0;
3211 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
3212 &dmin, &next_block, 0, 0);
3220 memcpy(s->
mv, best_s.
mv,
sizeof(s->
mv));
3241 encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER , pb, pb2, tex_pb,
3242 &dmin, &next_block, mx, my);
3260 s->
pb2= backup_s.pb2;
3264 avpriv_copy_bits(&backup_s.tex_pb, bit_buf_tex[next_block^1], tex_pb_bits_count);
3265 s->
tex_pb= backup_s.tex_pb;
3282 int motion_x = 0, motion_y = 0;
3290 motion_x= s->
mv[0][0][0] = 0;
3291 motion_y= s->
mv[0][0][1] = 0;
3378 for(dir=0; dir<2; dir++){
3452 #define MERGE(field) dst->field += src->field; src->field=0
3479 for(i=0; i<64; i++){
3593 for(i=1; i<context_count; i++){
3623 for(i=1; i<context_count; i++){
3636 ff_dlog(s,
"Scene change detected, encoding as I Frame %"PRId64
" %"PRId64
"\n",
3680 for(dir=0; dir<2; dir++){
3731 static const uint8_t y[32]={13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13};
3732 static const uint8_t c[32]={14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14};
3802 for(i=1; i<context_count; i++){
3806 for(i=1; i<context_count; i++){
3821 for(i=0; i<64; i++){
3822 int level= block[i];
3828 if(level<0) level=0;
3832 if(level>0) level=0;
3841 int qscale,
int *overflow){
3843 const uint16_t *matrix;
3847 unsigned int threshold1, threshold2;
3859 int coeff_count[64];
3860 int qmul, qadd, start_i, last_non_zero, i,
dc;
3871 qadd= ((qscale-1)|1)*8;
3888 block[0] = (block[0] + (q >> 1)) / q;
3914 threshold2= (threshold1<<1);
3916 for(i=63; i>=start_i; i--) {
3917 const int j = scantable[i];
3918 int level = block[j] * qmat[j];
3920 if(((
unsigned)(level+threshold1))>threshold2){
3926 for(i=start_i; i<=last_non_zero; i++) {
3927 const int j = scantable[i];
3928 int level = block[j] * qmat[j];
3932 if(((
unsigned)(level+threshold1))>threshold2){
3936 coeff[1][i]= level-1;
3940 coeff[0][i]= -
level;
3941 coeff[1][i]= -level+1;
3944 coeff_count[i]=
FFMIN(level, 2);
3948 coeff[0][i]= (level>>31)|1;
3955 if(last_non_zero < start_i){
3956 memset(block + start_i, 0, (64-start_i)*
sizeof(int16_t));
3957 return last_non_zero;
3960 score_tab[start_i]= 0;
3961 survivor[0]= start_i;
3964 for(i=start_i; i<=last_non_zero; i++){
3965 int level_index, j, zero_distortion;
3966 int dct_coeff=
FFABS(block[ scantable[i] ]);
3967 int best_score=256*256*256*120;
3971 zero_distortion= dct_coeff*dct_coeff;
3973 for(level_index=0; level_index < coeff_count[i]; level_index++){
3975 int level= coeff[level_index][i];
3976 const int alevel=
FFABS(level);
3982 unquant_coeff= alevel*qmul + qadd;
3985 unquant_coeff = alevel * matrix[j] * 8;
3989 unquant_coeff = (int)( alevel * qscale * matrix[j]) >> 3;
3990 unquant_coeff = (unquant_coeff - 1) | 1;
3992 unquant_coeff = ((( alevel << 1) + 1) * qscale * ((int) matrix[j])) >> 4;
3993 unquant_coeff = (unquant_coeff - 1) | 1;
3998 distortion= (unquant_coeff - dct_coeff) * (unquant_coeff - dct_coeff) - zero_distortion;
4000 if((level&(~127)) == 0){
4001 for(j=survivor_count-1; j>=0; j--){
4002 int run= i - survivor[j];
4004 score += score_tab[i-
run];
4006 if(score < best_score){
4009 level_tab[i+1]= level-64;
4014 for(j=survivor_count-1; j>=0; j--){
4015 int run= i - survivor[j];
4017 score += score_tab[i-
run];
4018 if(score < last_score){
4021 last_level= level-64;
4027 distortion += esc_length*
lambda;
4028 for(j=survivor_count-1; j>=0; j--){
4029 int run= i - survivor[j];
4030 int score= distortion + score_tab[i-
run];
4032 if(score < best_score){
4035 level_tab[i+1]= level-64;
4040 for(j=survivor_count-1; j>=0; j--){
4041 int run= i - survivor[j];
4042 int score= distortion + score_tab[i-
run];
4043 if(score < last_score){
4046 last_level= level-64;
4054 score_tab[i+1]= best_score;
4057 if(last_non_zero <= 27){
4058 for(; survivor_count; survivor_count--){
4059 if(score_tab[ survivor[survivor_count-1] ] <= best_score)
4063 for(; survivor_count; survivor_count--){
4064 if(score_tab[ survivor[survivor_count-1] ] <= best_score + lambda)
4069 survivor[ survivor_count++ ]= i+1;
4073 last_score= 256*256*256*120;
4074 for(i= survivor[0]; i<=last_non_zero + 1; i++){
4075 int score= score_tab[i];
4076 if(i) score += lambda*2;
4078 if(score < last_score){
4081 last_level= level_tab[i];
4082 last_run= run_tab[i];
4089 dc=
FFABS(block[0]);
4090 last_non_zero= last_i - 1;
4091 memset(block + start_i, 0, (64-start_i)*
sizeof(int16_t));
4093 if(last_non_zero < start_i)
4094 return last_non_zero;
4096 if(last_non_zero == 0 && start_i == 0){
4098 int best_score= dc *
dc;
4100 for(i=0; i<coeff_count[0]; i++){
4101 int level= coeff[i][0];
4102 int alevel=
FFABS(level);
4103 int unquant_coeff, score, distortion;
4106 unquant_coeff= (alevel*qmul + qadd)>>3;
4108 unquant_coeff = ((( alevel << 1) + 1) * qscale * ((int) matrix[0])) >> 4;
4109 unquant_coeff = (unquant_coeff - 1) | 1;
4111 unquant_coeff = (unquant_coeff + 4) >> 3;
4112 unquant_coeff<<= 3 + 3;
4114 distortion= (unquant_coeff -
dc) * (unquant_coeff - dc);
4117 else score= distortion + esc_length*
lambda;
4119 if(score < best_score){
4121 best_level= level - 64;
4124 block[0]= best_level;
4126 if(best_level == 0)
return -1;
4127 else return last_non_zero;
4133 block[ perm_scantable[last_non_zero] ]= last_level;
4136 for(; i>start_i; i -= run_tab[i] + 1){
4137 block[ perm_scantable[i-1] ]= level_tab[i];
4140 return last_non_zero;
4155 int perm_index= perm[
index];
4156 if(i==0) s*= sqrt(0.5);
4157 if(j==0) s*= sqrt(0.5);
4158 basis[perm_index][8*x +
y]=
lrintf(s * cos((
M_PI/8.0)*i*(x+0.5)) * cos((
M_PI/8.0)*j*(y+0.5)));
4177 int qmul, qadd, start_i, last_non_zero, i,
dc;
4181 int rle_index,
run, q = 1, sum;
4184 static int after_last=0;
4185 static int to_zero=0;
4186 static int from_zero=0;
4189 static int messed_sign=0;
4192 if(basis[0][0] == 0)
4234 for(i=0; i<64; i++){
4241 for(i=0; i<64; i++){
4246 w=
FFABS(weight[i]) + qns*one;
4247 w= 15 + (48*qns*one + w/2)/w;
4262 for(i=start_i; i<=last_non_zero; i++){
4263 int j= perm_scantable[i];
4264 const int level= block[j];
4268 if(level<0) coeff= qmul*level - qadd;
4269 else coeff= qmul*level + qadd;
4270 run_tab[rle_index++]=
run;
4279 if(last_non_zero>0){
4290 int run2, best_unquant_change=0, analyze_gradient;
4296 if(analyze_gradient){
4300 for(i=0; i<64; i++){
4316 const int level= block[0];
4317 int change, old_coeff;
4323 for(change=-1; change<=1; change+=2){
4324 int new_level= level + change;
4325 int score, new_coeff;
4327 new_coeff= q*new_level;
4328 if(new_coeff >= 2048 || new_coeff < 0)
4332 new_coeff - old_coeff);
4333 if(score<best_score){
4336 best_change= change;
4337 best_unquant_change= new_coeff - old_coeff;
4344 run2= run_tab[rle_index++];
4348 for(i=start_i; i<64; i++){
4349 int j= perm_scantable[i];
4350 const int level= block[j];
4351 int change, old_coeff;
4357 if(level<0) old_coeff= qmul*level - qadd;
4358 else old_coeff= qmul*level + qadd;
4359 run2= run_tab[rle_index++];
4366 for(change=-1; change<=1; change+=2){
4367 int new_level= level + change;
4368 int score, new_coeff, unquant_change;
4375 if(new_level<0) new_coeff= qmul*new_level - qadd;
4376 else new_coeff= qmul*new_level + qadd;
4377 if(new_coeff >= 2048 || new_coeff <= -2048)
4382 if(level < 63 && level > -63){
4383 if(i < last_non_zero)
4393 if(analyze_gradient){
4394 int g= d1[ scantable[i] ];
4395 if(g && (g^new_level) >= 0)
4399 if(i < last_non_zero){
4400 int next_i= i + run2 + 1;
4401 int next_level= block[ perm_scantable[next_i] ] + 64;
4403 if(next_level&(~127))
4406 if(next_i < last_non_zero)
4426 if(i < last_non_zero){
4427 int next_i= i + run2 + 1;
4428 int next_level= block[ perm_scantable[next_i] ] + 64;
4430 if(next_level&(~127))
4433 if(next_i < last_non_zero)
4452 unquant_change= new_coeff - old_coeff;
4453 av_assert2((score < 100*lambda && score > -100*lambda) || lambda==0);
4457 if(score<best_score){
4460 best_change= change;
4461 best_unquant_change= unquant_change;
4465 prev_level= level + 64;
4466 if(prev_level&(~127))
4479 int j= perm_scantable[ best_coeff ];
4481 block[j] += best_change;
4483 if(best_coeff > last_non_zero){
4484 last_non_zero= best_coeff;
4492 if(block[j] - best_change){
4493 if(
FFABS(block[j]) >
FFABS(block[j] - best_change)){
4505 for(; last_non_zero>=start_i; last_non_zero--){
4506 if(block[perm_scantable[last_non_zero]])
4512 if(256*256*256*64 % count == 0){
4513 av_log(s->
avctx,
AV_LOG_DEBUG,
"after_last:%d to_zero:%d from_zero:%d raise:%d lower:%d sign:%d xyp:%d/%d/%d\n", after_last, to_zero, from_zero,
raise, lower, messed_sign, s->
mb_x, s->
mb_y, s->
picture_number);
4518 for(i=start_i; i<=last_non_zero; i++){
4519 int j= perm_scantable[i];
4520 const int level= block[j];
4523 run_tab[rle_index++]=
run;
4536 if(last_non_zero>0){
4542 return last_non_zero;
4557 const uint8_t *scantable,
int last)
4568 for (i = 0; i <= last; i++) {
4569 const int j = scantable[i];
4574 for (i = 0; i <= last; i++) {
4575 const int j = scantable[i];
4576 const int perm_j = permutation[j];
4577 block[perm_j] = temp[j];
4583 int qscale,
int *overflow)
4585 int i, j,
level, last_non_zero, q, start_i;
4590 unsigned int threshold1, threshold2;
4609 block[0] = (block[0] + (q >> 1)) / q;
4621 threshold2= (threshold1<<1);
4622 for(i=63;i>=start_i;i--) {
4624 level = block[j] * qmat[j];
4626 if(((
unsigned)(level+threshold1))>threshold2){
4633 for(i=start_i; i<=last_non_zero; i++) {
4635 level = block[j] * qmat[j];
4639 if(((
unsigned)(level+threshold1))>threshold2){
4657 scantable, last_non_zero);
4659 return last_non_zero;
4662 #define OFFSET(x) offsetof(MpegEncContext, x)
4663 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
4667 {
"mb_info",
"emit macroblock info for RFC 2190 packetization, the parameter value is the maximum payload size",
OFFSET(
mb_info),
AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX,
VE },
4729 .
name =
"msmpeg4v2",
const uint16_t ff_mpeg1_default_non_intra_matrix[64]
#define AV_CODEC_FLAG_INTERLACED_ME
interlaced motion estimation
av_cold void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx)
static const AVClass wmv1_class
void ff_h261_reorder_mb_index(MpegEncContext *s)
int(* try_8x8basis)(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale)
int chroma_elim_threshold
void ff_jpeg_fdct_islow_10(int16_t *data)
static const AVOption h263_options[]
int frame_bits
bits used for the current frame
av_cold int ff_dct_encode_init(MpegEncContext *s)
RateControlContext rc_context
contains stuff only accessed in ratecontrol.c
const struct AVCodec * codec
int ff_mpv_reallocate_putbitbuffer(MpegEncContext *s, size_t threshold, size_t size_increase)
av_cold void ff_rate_control_uninit(MpegEncContext *s)
#define FF_MPV_FLAG_STRICT_GOP
void ff_init_block_index(MpegEncContext *s)
void ff_estimate_b_frame_motion(MpegEncContext *s, int mb_x, int mb_y)
qpel_mc_func avg_qpel_pixels_tab[2][16]
attribute_deprecated int intra_quant_bias
me_cmp_func frame_skip_cmp[6]
#define CANDIDATE_MB_TYPE_SKIPPED
static int shift(int a, int b)
#define CONFIG_WMV2_ENCODER
void(* dct_unquantize_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
void ff_mpeg1_encode_init(MpegEncContext *s)
void av_free_packet(AVPacket *pkt)
Free a packet.
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
static void get_visual_weight(int16_t *weight, uint8_t *ptr, int stride)
int time_increment_bits
< number of bits to represent the fractional part of time (encoder only)
void ff_h263_encode_picture_header(MpegEncContext *s, int picture_number)
This structure describes decoded (raw) audio or video data.
AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
int16_t(* p_mv_table)[2]
MV table (1MV per MB) p-frame encoding.
int mpeg_quant
0-> h263 quant 1-> mpeg quant
void ff_fdct_ifast(int16_t *data)
int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
ptrdiff_t const GLvoid * data
uint8_t * fcode_tab
smallest fcode needed for each MV
int start_mb_y
start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
#define MV_TYPE_FIELD
2 vectors, one per field
void ff_estimate_p_frame_motion(MpegEncContext *s, int mb_x, int mb_y)
const uint8_t * y_dc_scale_table
qscale -> y_dc_scale table
uint8_t * mb_mean
Table for MB luminance.
uint64_t error[AV_NUM_DATA_POINTERS]
error
#define AV_CODEC_FLAG_INTERLACED_DCT
Use interlaced DCT.
int last_mv[2][2][2]
last MV, used for MV prediction in MPEG1 & B-frame MPEG4
uint8_t * edge_emu_buffer
temporary buffer for if MVs point to out-of-frame data
int pre_pass
= 1 for the pre pass
#define CONFIG_RV10_ENCODER
#define AV_CODEC_FLAG_LOOP_FILTER
loop filter.
op_pixels_func avg_pixels_tab[4][4]
Halfpel motion compensation with rounding (a+b+1)>>1.
#define FF_MPV_FLAG_SKIP_RD
AVFrame * tmp_frames[MAX_B_FRAMES+2]
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
attribute_deprecated int rc_qmod_freq
#define AV_LOG_WARNING
Something somehow does not look correct.
qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16]
void(* shrink[4])(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height)
#define CANDIDATE_MB_TYPE_INTER_I
#define LIBAVUTIL_VERSION_INT
static void block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last)
Permute an 8x8 block according to permuatation.
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
void ff_h263_encode_init(MpegEncContext *s)
int end_mb_y
end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
static av_cold int init(AVCodecContext *avctx)
void ff_init_qscale_tab(MpegEncContext *s)
init s->current_picture.qscale_table from s->lambda_table
uint16_t * mb_var
Table for MB variances.
uint16_t(* q_chroma_intra_matrix16)[2][64]
uint16_t chroma_intra_matrix[64]
static int estimate_qp(MpegEncContext *s, int dry_run)
int max_b_frames
maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 re...
int16_t(*[3] ac_val)[16]
used for mpeg4 AC prediction, all 3 arrays must be continuous
void(* add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale)
int v_edge_pos
horizontal / vertical position of the right/bottom edge (pixel replication)
#define FF_MPV_COMMON_OPTS
enum AVColorRange color_range
MPEG vs JPEG YUV range.
int msmpeg4_version
0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
#define CANDIDATE_MB_TYPE_BIDIR
av_cold void ff_h263dsp_init(H263DSPContext *ctx)
void(* rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb)
attribute_deprecated int lmax
void ff_get_2pass_fcode(MpegEncContext *s)
#define CONFIG_MJPEG_ENCODER
void avpriv_copy_bits(PutBitContext *pb, const uint8_t *src, int length)
Copy the content of src to the bitstream.
int obmc
overlapped block motion compensation
void avpriv_align_put_bits(PutBitContext *s)
Pad the bitstream with zeros up to the next byte boundary.
void ff_mpeg1_clean_buffers(MpegEncContext *s)
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
int ff_h261_get_picture_format(int width, int height)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
int16_t(*[2][2] p_field_mv_table)[2]
MV table (2MV per MB) interlaced p-frame encoding.
static int select_input_picture(MpegEncContext *s)
static const AVClass msmpeg4v3_class
int min_qcoeff
minimum encodable coefficient
static int sse(MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride)
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_malloc but the buffer has additional AV_INPUT_BUFFER_PADDING_SIZE at the end w...
int ildct_cmp
interlaced DCT comparison function
void(* qpel_mc_func)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
const uint16_t ff_h263_format[8][2]
av_cold int ff_mjpeg_encode_init(MpegEncContext *s)
int mpv_flags
flags set by private options
static const AVClass h263_class
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
uint8_t * intra_ac_vlc_length
int padding_bug_score
used to detect the VERY common padding bug in MPEG4
int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src)
#define UNI_AC_ENC_INDEX(run, level)
int mb_num
number of MBs of a picture
void ff_mjpeg_encode_picture_header(AVCodecContext *avctx, PutBitContext *pb, ScanTable *intra_scantable, uint16_t luma_intra_matrix[64], uint16_t chroma_intra_matrix[64])
av_cold void ff_fdctdsp_init(FDCTDSPContext *c, AVCodecContext *avctx)
int frame_skip_cmp
frame skip comparison function
static void clip_coeffs(MpegEncContext *s, int16_t *block, int last_index)
An AV_PKT_DATA_H263_MB_INFO side data packet contains a number of structures with info about macroblo...
static void write_mb_info(MpegEncContext *s)
int time_base
time in seconds of last I,P,S Frame
uint8_t(* mv_penalty)[MAX_DMV *2+1]
bit amount needed to encode a MV
int h263_aic
Advanded INTRA Coding (AIC)
int16_t(* b_back_mv_table)[2]
MV table (1MV per MB) backward mode b-frame encoding.
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
int16_t * ff_h263_pred_motion(MpegEncContext *s, int block, int dir, int *px, int *py)
int encoding
true if we are encoding (vs decoding)
uint64_t vbv_delay
VBV delay coded in the last frame (in periods of a 27 MHz clock).
void(* dct_unquantize_h263_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
void(* dct_unquantize_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
attribute_deprecated int me_method
This option does nothing.
int scenechange_threshold
scene change detection threshold 0 is default, larger means fewer detected scene changes.
uint32_t ff_square_tab[512]
#define CONFIG_RV20_ENCODER
void ff_mpeg4_merge_partitions(MpegEncContext *s)
static int mb_var_thread(AVCodecContext *c, void *arg)
void ff_clean_intra_table_entries(MpegEncContext *s)
Clean dc, ac, coded_block for the current non-intra MB.
void(* dct_unquantize_h263_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
static int load_input_picture(MpegEncContext *s, const AVFrame *pic_arg)
#define FF_MPV_FLAG_CBP_RD
int skipdct
skip dct and code zero residual
float rc_buffer_aggressivity
void ff_mpeg4_clean_buffers(MpegEncContext *s)
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
#define CANDIDATE_MB_TYPE_INTER
float p_masking
p block masking (0-> disabled)
int picture_in_gop_number
0-> first pic in gop, ...
#define av_assert0(cond)
assert() equivalent, that is always enabled.
void(* emulated_edge_mc)(uint8_t *dst, const uint8_t *src, ptrdiff_t dst_linesize, ptrdiff_t src_linesize, int block_w, int block_h, int src_x, int src_y, int w, int h)
Copy a rectangular area of samples to a temporary buffer and replicate the border samples...
int alt_inter_vlc
alternative inter vlc
void ff_mpeg1_encode_slice_header(MpegEncContext *s)
int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
int64_t time
time of current frame
static int encode_picture(MpegEncContext *s, int picture_number)
av_cold void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
int bit_rate_tolerance
number of bits the bitstream is allowed to diverge from the reference.
static const AVClass msmpeg4v2_class
#define MV_DIRECT
bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4) ...
attribute_deprecated const char * rc_eq
attribute_deprecated float rc_buffer_aggressivity
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Picture ** input_picture
next pictures on display order for encoding
#define CANDIDATE_MB_TYPE_INTER4V
void(* get_pixels)(int16_t *block, const uint8_t *pixels, ptrdiff_t line_size)
void(* denoise_dct)(struct MpegEncContext *s, int16_t *block)
PutBitContext pb2
used for data partitioned VOPs
enum OutputFormat out_format
output format
#define CANDIDATE_MB_TYPE_FORWARD_I
uint16_t(* dct_offset)[64]
void ff_dct_encode_init_x86(MpegEncContext *s)
static av_cold int end(AVCodecContext *avctx)
uint16_t * chroma_intra_matrix
custom intra quantization matrix Code outside libavcodec should access this field using av_codec_g/se...
void ff_mpv_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int dir, uint8_t **ref_picture, op_pixels_func(*pix_op)[4], qpel_mc_func(*qpix_op)[16])
void ff_msmpeg4_encode_picture_header(MpegEncContext *s, int picture_number)
static void mpv_encode_defaults(MpegEncContext *s)
Set the given MpegEncContext to defaults for encoding.
Multithreading support functions.
int pre_dia_size
ME prepass diamond size & shape.
static const AVOption h263p_options[]
static int get_sae(uint8_t *src, int ref, int stride)
#define AV_CODEC_FLAG_LOW_DELAY
Force low delay.
void ff_free_picture_tables(Picture *pic)
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
int misc_bits
cbp, mb_type
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
int no_rounding
apply no rounding to motion compensation (MPEG4, msmpeg4, ...) for b-frames rounding mode is always 0...
#define CANDIDATE_MB_TYPE_BACKWARD_I
int(* q_chroma_intra_matrix)[64]
int me_cmp
motion estimation comparison function
void ff_mpv_decode_mb(MpegEncContext *s, int16_t block[12][64])
void ff_mpeg4_encode_video_packet_header(MpegEncContext *s)
Picture current_picture
copy of the current picture structure.
int avcodec_encode_video2(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Encode a frame of video.
int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared)
#define CONFIG_MPEG1VIDEO_ENCODER
#define PICT_BOTTOM_FIELD
static double av_q2d(AVRational a)
Convert rational to double.
int16_t(* b_bidir_forw_mv_table)[2]
MV table (1MV per MB) bidir mode b-frame encoding.
static void dct_single_coeff_elimination(MpegEncContext *s, int n, int threshold)
const uint16_t ff_aanscales[64]
int ff_wmv2_encode_picture_header(MpegEncContext *s, int picture_number)
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
uint16_t pp_time
time distance between the last 2 p,s,i frames
#define AV_LOG_VERBOSE
Detailed information.
const uint8_t * scantable
av_cold void ff_mpv_idct_init(MpegEncContext *s)
int mb_height
number of MBs horizontally & vertically
static void rebase_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Rebase the bit writer onto a reallocated buffer.
float lumi_masking
luminance masking (0-> disabled)
char * stats_out
pass1 encoding statistics output buffer
int max_qcoeff
maximum encodable coefficient
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
high precision timer, useful to profile code
static void update_noise_reduction(MpegEncContext *s)
#define FF_MPV_FLAG_QP_RD
void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[8][64], int motion_x, int motion_y)
void ff_h261_encode_picture_header(MpegEncContext *s, int picture_number)
int dquant
qscale difference to prev qscale
int num_entries
number of RateControlEntries
int gop_picture_number
index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
static void ff_update_block_index(MpegEncContext *s)
void ff_set_qscale(MpegEncContext *s, int qscale)
set qscale and update qscale dependent variables.
#define ROUNDED_DIV(a, b)
int(* q_inter_matrix)[64]
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
static int get_bits_diff(MpegEncContext *s)
int(* q_intra_matrix)[64]
precomputed matrix (combine qscale and DCT renorm)
int intra_only
if true, only intra pictures are generated
av_cold int ff_mpv_encode_end(AVCodecContext *avctx)
int avcodec_close(AVCodecContext *avctx)
Close a given AVCodecContext and free all the data associated with it (but not the AVCodecContext its...
int16_t * dc_val[3]
used for mpeg4 DC prediction, all 3 arrays must be continuous
int h263_plus
h263 plus headers
int slice_context_count
number of used thread_contexts
int last_non_b_pict_type
used for mpeg4 gmc b-frames & ratecontrol
int width
width and height of the video frame
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static uint8_t * put_bits_ptr(PutBitContext *s)
Return the pointer to the byte where the bitstream writer will put the next bit.
int has_b_frames
Size of the frame reordering buffer in the decoder.
int last_dc[3]
last DC values for MPEG1
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
attribute_deprecated float rc_initial_cplx
uint8_t * inter_ac_vlc_last_length
#define FF_MB_DECISION_BITS
chooses the one which needs the fewest bits
#define AV_CODEC_FLAG_4MV
4 MV per MB allowed / advanced prediction for H.263.
#define PTRDIFF_SPECIFIER
int mb_skipped
MUST BE SET only during DECODING.
int strict_std_compliance
strictly follow the std (MPEG4, ...)
int partitioned_frame
is current frame partitioned
uint8_t * rd_scratchpad
scratchpad for rate distortion mb decision
#define MAX_PICTURE_COUNT
int frame_skip_threshold
frame skip threshold
av_cold int ff_rate_control_init(MpegEncContext *s)
int me_sub_cmp
subpixel motion estimation comparison function
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
int qmax
maximum quantizer
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
static void update_mb_info(MpegEncContext *s, int startcode)
void ff_write_pass1_stats(MpegEncContext *s)
int unrestricted_mv
mv can point outside of the coded picture
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
int last_lambda_for[5]
last lambda for a specific pict type
static int sse_mb(MpegEncContext *s)
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
static int dct_quantize_trellis_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
void(* dct_unquantize_mpeg2_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
uint8_t * intra_chroma_ac_vlc_length
void(* dct_unquantize_mpeg1_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
int h263_slice_structured
int flags
AV_CODEC_FLAG_*.
uint64_t error[AV_NUM_DATA_POINTERS]
int rc_max_rate
maximum bitrate
int64_t av_gcd(int64_t a, int64_t b)
Return the greatest common divisor of a and b.
MpegvideoEncDSPContext mpvencdsp
attribute_deprecated int inter_quant_bias
const char * name
Name of the codec implementation.
int quarter_sample
1->qpel, 0->half pel ME/MC
uint16_t * mb_type
Table for candidate MB types for encoding (defines in mpegutils.h)
void ff_mjpeg_encode_picture_trailer(PutBitContext *pb, int header_bits)
int av_packet_shrink_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int size)
Shrink the already allocated side data buffer.
int low_delay
no reordering needed / has no b-frames
qpel_mc_func put_qpel_pixels_tab[2][16]
uint8_t *[2][2] b_field_select_table
static const uint8_t offset[127][2]
void ff_mpv_common_end(MpegEncContext *s)
Libavcodec external API header.
int flags
A combination of AV_PKT_FLAG values.
static int put_bits_count(PutBitContext *s)
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
static void frame_end(MpegEncContext *s)
int resync_mb_x
x position of last resync marker
int rc_buffer_size
decoder bitstream buffer size
void ff_clean_h263_qscales(MpegEncContext *s)
modify qscale so that encoding is actually possible in h263 (limit difference to -2..2)
int coded_picture_number
used to set pic->coded_picture_number, should not be used for/by anything else
static int estimate_best_b_count(MpegEncContext *s)
int intra_dc_precision
precision of the intra DC coefficient - 8
int me_penalty_compensation
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
void ff_wmv2_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
common internal API header
uint8_t * intra_ac_vlc_last_length
static const uint8_t non_linear_qscale[32]
static av_always_inline void encode_mb_internal(MpegEncContext *s, int motion_x, int motion_y, int mb_block_height, int mb_block_width, int mb_block_count)
const uint8_t *const ff_mpeg2_dc_scale_table[4]
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
void ff_h263_loop_filter(MpegEncContext *s)
void(* op_pixels_func)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
int bit_rate
the average bitrate
enum AVPictureType pict_type
Picture type of the frame.
const uint8_t ff_h263_chroma_qscale_table[32]
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
#define AV_CODEC_FLAG_QSCALE
Use fixed qscale.
int display_picture_number
picture number in display order
uint16_t(* q_inter_matrix16)[2][64]
uint8_t * vbv_delay_ptr
pointer to vbv_delay in the bitstream
int fixed_qscale
fixed qscale if non zero
void ff_clean_mpeg4_qscales(MpegEncContext *s)
modify mb_type & qscale so that encoding is actually possible in mpeg4
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
#define AV_CODEC_FLAG_AC_PRED
H.263 advanced intra coding / MPEG-4 AC prediction.
int me_method
ME algorithm.
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
int umvplus
== H263+ && unrestricted_mv
Picture new_picture
copy of the source picture structure for encoding.
int intra_quant_bias
bias for the quantizer
int width
picture width / height.
int(* pix_sum)(uint8_t *pix, int line_size)
int16_t(*[2] motion_val)[2]
Picture * current_picture_ptr
pointer to the current picture
float rc_max_available_vbv_use
Ratecontrol attempt to use, at maximum, of what can be used without an underflow. ...
int ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number)
#define AV_CODEC_FLAG_PSNR
error[?] variables will be set during encoding.
float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run)
#define AV_CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
uint16_t(* q_intra_matrix16)[2][64]
identical to the above but for MMX & these are not permutated, second 64 entries are bias ...
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
int(* ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2]
[mb_intra][isChroma][level][run][last]
int block_last_index[12]
last non zero coefficient in block
static int dct_quantize_refine(MpegEncContext *s, int16_t *block, int16_t *weight, int16_t *orig, int n, int qscale)
uint8_t idct_permutation[64]
IDCT input permutation.
const int16_t ff_mpeg4_default_non_intra_matrix[64]
int mb_decision
macroblock decision mode
#define CONFIG_FLV_ENCODER
static int get_intra_count(MpegEncContext *s, uint8_t *src, uint8_t *ref, int stride)
attribute_deprecated float rc_qsquish
uint8_t * mbintra_table
used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
int ff_msmpeg4_encode_init(MpegEncContext *s)
int ac_esc_length
num of bits needed to encode the longest esc
preferred ID for MPEG-1/2 video decoding
static void set_put_bits_buffer_size(PutBitContext *s, int size)
Change the end of the buffer.
#define FF_ARRAY_ELEMS(a)
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
int block_index[6]
index to current MB in block based arrays with edges
the normal 2^n-1 "JPEG" YUV ranges
int * mb_index2xy
mb_index -> mb_x + mb_y*mb_stride
static uint8_t default_fcode_tab[MAX_MV *2+1]
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
static void build_basis(uint8_t *perm)
#define MV_TYPE_16X16
1 vector for the whole mb
int frame_skip_factor
frame skip factor
int first_slice_line
used in mpeg4 too to handle resync markers
uint16_t * mc_mb_var
Table for motion compensated MB variances.
void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number)
#define FF_COMPLIANCE_UNOFFICIAL
Allow unofficial extensions.
int coded_picture_number
picture number in bitstream order
#define AV_LOG_INFO
Standard information.
uint16_t inter_matrix[64]
uint64_t error[AV_NUM_DATA_POINTERS]
error
void ff_jpeg_fdct_islow_8(int16_t *data)
void ff_h261_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
struct MpegEncContext * thread_context[MAX_THREADS]
#define CONFIG_MSMPEG4_ENCODER
unsigned int lambda2
(lambda*lambda) >> FF_LAMBDA_SHIFT
#define CODEC_FLAG_NORMALIZE_AQP
void ff_faandct(int16_t *data)
double buffer_index
amount of bits in the video/audio buffer
void ff_h263_update_motion_val(MpegEncContext *s)
int h263_flv
use flv h263 header
static const AVClass h263p_class
ptrdiff_t linesize
line size, in bytes, may be different from width
char * av_strdup(const char *s)
Duplicate the string s.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
void ff_convert_matrix(MpegEncContext *s, int(*qmat)[64], uint16_t(*qmat16)[2][64], const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra)
const uint16_t ff_inv_aanscales[64]
void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type)
int frame_bits
number of bits used for the previously encoded frame
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
uint8_t * intra_chroma_ac_vlc_last_length
void(* fdct)(int16_t *block)
main external API structure.
int ff_alloc_picture(AVCodecContext *avctx, Picture *pic, MotionEstContext *me, ScratchpadContext *sc, int shared, int encoding, int chroma_x_shift, int chroma_y_shift, int out_format, int mb_stride, int mb_width, int mb_height, int b8_stride, ptrdiff_t *linesize, ptrdiff_t *uvlinesize)
Allocate a Picture.
ScanTable intra_scantable
int pre_me
prepass for motion estimation
int qmin
minimum quantizer
int height
picture size. must be a multiple of 16
static void write_slice_end(MpegEncContext *s)
int64_t dts_delta
pts difference between the first and second input frame, used for calculating dts of the first frame ...
int64_t user_specified_pts
last non-zero pts from AVFrame which was passed into avcodec_encode_video2()
static void denoise_dct_c(MpegEncContext *s, int16_t *block)
op_pixels_func put_pixels_tab[4][4]
Halfpel motion compensation with rounding (a+b+1)>>1.
static int frame_start(MpegEncContext *s)
float spatial_cplx_masking
spatial complexity masking (0-> disabled)
void ff_fix_long_p_mvs(MpegEncContext *s)
Picture * picture
main picture buffer
int data_partitioning
data partitioning flag from header
uint8_t * inter_ac_vlc_length
uint16_t * intra_matrix
custom intra quantization matrix
void ff_h263_encode_gob_header(MpegEncContext *s, int mb_line)
Encode a group of blocks header.
Describe the class of an AVClass context structure.
int stuffing_bits
bits used for stuffing
op_pixels_func put_no_rnd_pixels_tab[4][4]
Halfpel motion compensation with no rounding (a+b)>>1.
int16_t(*[2][2][2] b_field_mv_table)[2]
MV table (4MV per MB) interlaced b-frame encoding.
int(* pix_norm1)(uint8_t *pix, int line_size)
int64_t mc_mb_var_sum
motion compensated MB variance for current frame
#define CANDIDATE_MB_TYPE_DIRECT
#define FF_DEFAULT_QUANT_BIAS
static void copy_context_after_encode(MpegEncContext *d, MpegEncContext *s, int type)
const uint16_t ff_mpeg1_default_intra_matrix[256]
int input_picture_number
used to set pic->display_picture_number, should not be used for/by anything else
const uint8_t ff_zigzag_direct[64]
av_cold void ff_pixblockdsp_init(PixblockDSPContext *c, AVCodecContext *avctx)
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
int mb_info
interval for outputting info about mb offsets as side data
void ff_set_mpeg4_time(MpegEncContext *s)
static void copy_context_before_encode(MpegEncContext *d, MpegEncContext *s, int type)
av_cold void ff_mjpeg_encode_close(MpegEncContext *s)
int avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Initialize the AVCodecContext to use the given AVCodec.
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
int frame_skip_exp
frame skip exponent
#define CANDIDATE_MB_TYPE_BIDIR_I
const int16_t ff_mpeg4_default_intra_matrix[64]
int f_code
forward MV resolution
int ff_pre_estimate_p_frame_motion(MpegEncContext *s, int mb_x, int mb_y)
#define CANDIDATE_MB_TYPE_DIRECT0
int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my)
int ff_mjpeg_encode_stuffing(MpegEncContext *s)
static int weight(int i, int blen, int offset)
uint16_t * inter_matrix
custom inter quantization matrix
int max_b_frames
max number of b-frames for encoding
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
static enum AVPixelFormat pix_fmts[]
void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix)
static av_always_inline void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
int last_mv_dir
last mv_dir, used for b frame encoding
int av_frame_get_buffer(AVFrame *frame, int align)
Allocate new buffer(s) for audio or video data.
int h263_pred
use mpeg4/h263 ac/dc predictions
int16_t(* b_bidir_back_mv_table)[2]
MV table (1MV per MB) bidir mode b-frame encoding.
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
float dark_masking
darkness masking (0-> disabled)
static int64_t pts
Global timestamp for the audio frames.
float temporal_cplx_masking
temporary complexity masking (0-> disabled)
int ff_init_me(MpegEncContext *s)
uint8_t *[2] p_field_select_table
int16_t(* b_direct_mv_table)[2]
MV table (1MV per MB) direct mode b-frame encoding.
#define AV_CODEC_FLAG_QPEL
Use qpel MC.
AAN (Arai, Agui and Nakajima) (I)DCT tables.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
const uint8_t * c_dc_scale_table
qscale -> c_dc_scale table
#define FF_MB_DECISION_SIMPLE
uses mb_cmp
int64_t mc_mb_var_sum_temp
int mv[2][4][2]
motion vectors for a macroblock first coordinate : 0 = forward 1 = backward second " : depend...
int16_t(* b_forw_mv_table)[2]
MV table (1MV per MB) forward mode b-frame encoding.
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
int noise_reduction
noise reduction strength
static int estimate_motion_thread(AVCodecContext *c, void *arg)
Picture * next_picture_ptr
pointer to the next picture (for bidir pred)
struct AVCodecContext * avctx
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
PutBitContext pb
bit output
static int skip_check(MpegEncContext *s, Picture *p, Picture *ref)
void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *pic)
Deallocate a picture.
av_cold int ff_mpv_encode_init(AVCodecContext *avctx)
#define CONFIG_MPEG4_ENCODER
#define CONFIG_MPEG2VIDEO_ENCODER
GLint GLenum GLboolean GLsizei stride
static void update_qscale(MpegEncContext *s)
int mb_cmp
macroblock comparison function (not supported yet)
int quantizer_noise_shaping
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
void ff_msmpeg4_encode_ext_header(MpegEncContext *s)
static int pre_estimate_motion_thread(AVCodecContext *c, void *arg)
#define FF_DISABLE_DEPRECATION_WARNINGS
static const int32_t qmat16[MAT_SIZE]
#define FF_MB_DECISION_RD
rate distortion
common internal api header.
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
#define CANDIDATE_MB_TYPE_FORWARD
#define CONFIG_H261_ENCODER
void ff_h263_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
int adaptive_quant
use adaptive quantization
static int16_t basis[64][64]
attribute_deprecated float border_masking
static int score_tab[256]
Picture last_picture
copy of the previous picture structure.
Picture * last_picture_ptr
pointer to the previous picture.
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
float rc_qsquish
ratecontrol qmin qmax limiting method 0-> clipping, 1-> use a nice continuous function to limit qscal...
int64_t reordered_pts
reordered pts to be used as dts for the next output frame when there's a delay
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
int ff_vbv_update(MpegEncContext *s, int frame_size)
#define H263_GOB_HEIGHT(h)
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
#define CONFIG_H263_ENCODER
attribute_deprecated float rc_qmod_amp
#define CONFIG_H263P_ENCODER
const uint8_t * chroma_qscale_table
qscale -> chroma_qscale (h263)
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
AVCodec ff_msmpeg4v3_encoder
int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
int trellis
trellis RD quantization
void(* dct_unquantize_mpeg1_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
#define AV_CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
void ff_mpeg4_stuffing(PutBitContext *pbc)
add mpeg4 stuffing bits (01...1)
#define CANDIDATE_MB_TYPE_INTRA
int16_t(* blocks)[12][64]
int slices
Number of slices.
int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic_arg, int *got_packet)
const AVOption ff_mpv_generic_options[]
int last_bits
temp var used for calculating the above vars
void ff_mpeg4_init_partitions(MpegEncContext *s)
av_cold int ff_mpv_common_init(MpegEncContext *s)
init common structure for both encoder and decoder.
void(* diff_pixels)(int16_t *block, const uint8_t *s1, const uint8_t *s2, int stride)
static av_always_inline int diff(const uint32_t a, const uint32_t b)
int dia_size
ME diamond size & shape.
int b_sensitivity
Adjust sensitivity of b_frame_strategy 1.
int(* execute)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size)
The codec may call this to execute several independent things.
#define FF_ENABLE_DEPRECATION_WARNINGS
static void merge_context_after_me(MpegEncContext *dst, MpegEncContext *src)
void(* draw_edges)(uint8_t *buf, int wrap, int width, int height, int w, int h, int sides)
int ff_get_best_fcode(MpegEncContext *s, int16_t(*mv_table)[2], int type)
int resync_mb_y
y position of last resync marker
struct AVCodecInternal * internal
Private context used for internal data.
int16_t(* block)[64]
points to one of the following blocks
void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[12][64])
int64_t bit_rate
wanted bit rate
PutBitContext tex_pb
used for data partitioned VOPs
Picture next_picture
copy of the next picture structure.
int key_frame
1 -> keyframe, 0-> not
attribute_deprecated int error_rate
static void set_frame_distances(MpegEncContext *s)
static const double coeff[2][5]
#define FF_QP2LAMBDA
factor to convert from H.263 QP to lambda
void ff_fix_long_mvs(MpegEncContext *s, uint8_t *field_select_table, int field_select, int16_t(*mv_table)[2], int f_code, int type, int truncate)
Picture ** reordered_input_picture
pointer to the next pictures in codedorder for encoding
static const struct twinvq_data tab
unsigned int byte_buffer_size
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> dc
void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number)
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
void(* dct_unquantize_mpeg2_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
static int encode_thread(AVCodecContext *c, void *arg)
void ff_mpv_common_defaults(MpegEncContext *s)
Set the given MpegEncContext to common defaults (same for encoding and decoding). ...
int(* fast_dct_quantize)(struct MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
void ff_mpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
uint16_t intra_matrix[64]
matrix transmitted in the bitstream
#define LOCAL_ALIGNED_16(t, v,...)
static void merge_context_after_encode(MpegEncContext *dst, MpegEncContext *src)
static void update_duplicate_context_after_me(MpegEncContext *dst, MpegEncContext *src)
int ff_mpeg4_encode_picture_header(MpegEncContext *s, int picture_number)
#define AV_CODEC_FLAG_CLOSED_GOP
Allow non spec compliant speedup tricks.
static uint8_t default_mv_penalty[MAX_FCODE+1][MAX_DMV *2+1]
int inter_quant_bias
bias for the quantizer
av_cold void ff_qpeldsp_init(QpelDSPContext *c)
attribute_deprecated int lmin
#define CANDIDATE_MB_TYPE_BACKWARD
uint8_t * av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int size)
Allocate new information of a packet.
int(* dct_quantize)(struct MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
#define MV_TYPE_8X8
4 vectors (h263, mpeg4 4MV)
int rc_min_rate
minimum bitrate
int b_code
backward MV resolution for B Frames (mpeg4)
void ff_msmpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
void ff_h261_encode_init(MpegEncContext *s)
int64_t mb_var_sum
sum of MB variance for current frame
static int encode_frame(AVCodecContext *c, AVFrame *frame)
AVPixelFormat
Pixel format.
This structure stores compressed data.
uint8_t * byte_buffer
temporary buffer used for encoders to store their bitstream
int strict_std_compliance
strictly follow the standard (MPEG4, ...).
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
int ff_check_alignment(void)
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
#define FF_ALLOCZ_OR_GOTO(ctx, p, size, label)
int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
Return the index into tab at which {a,b} match elements {[0],[1]} of tab.
#define AV_NOPTS_VALUE
Undefined timestamp value.
static void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegEncContext *best, int type, PutBitContext pb[2], PutBitContext pb2[2], PutBitContext tex_pb[2], int *dmin, int *next_block, int motion_x, int motion_y)
unsigned int lambda
lagrange multipler used in rate distortion
AVCodec ff_msmpeg4v2_encoder
uint16_t pb_time
time distance between the last b and p,s,i frame
enum idct_permutation_type perm_type
static const uint8_t sp5x_quant_table[20][64]
int next_lambda
next lambda used for retrying to encode a frame