static int mb_decision = FF_MB_DECISION_SIMPLE;
static int use_4mv = 0;
static int use_aic = 0;
+static int use_aiv = 0;
static int use_umv = 0;
static int do_deinterlace = 0;
static int workaround_bugs = FF_BUG_AUTODETECT;
if (use_aic) {
video_enc->flags |= CODEC_FLAG_H263P_AIC;
}
+ if (use_aiv) {
+ video_enc->flags |= CODEC_FLAG_H263P_AIV;
+ }
if (use_4mv) {
video_enc->flags |= CODEC_FLAG_4MV;
}
{ "vstats", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&do_vstats}, "dump video coding statistics to file" },
{ "vhook", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)add_frame_hooker}, "insert video processing module", "module" },
{ "aic", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&use_aic}, "enable Advanced intra coding (h263+)" },
+ { "aiv", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&use_aiv}, "enable Alternative inter vlc (h263+)" },
{ "umv", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&use_umv}, "enable Unlimited Motion Vector (h263+)" },
{ "intra_matrix", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_intra_matrix}, "specify intra matrix coeffs", "matrix" },
{ "inter_matrix", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_inter_matrix}, "specify inter matrix coeffs", "matrix" },
*/
#define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
-#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed
+#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
#define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
#define CODEC_FLAG_GMC 0x0020 ///< use GMC
#define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
#define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
#define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
#define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
+#define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
/* For advanced prediction mode, we reuse the 4MV flag */
/* Unsupported options :
* Syntax Arithmetic coding (SAC)
* Slice structured
* Reference Picture Selection
* Independant Segment Decoding
- * Alternative Inter * VLC
* Modified Quantization */
/* /Fx */
/* codec capabilities */
put_bits(&s->pb,1,0); /* Slice Structured: off */
put_bits(&s->pb,1,0); /* Reference Picture Selection: off */
put_bits(&s->pb,1,0); /* Independent Segment Decoding: off */
- put_bits(&s->pb,1,0); /* Alternative Inter VLC: off */
+ put_bits(&s->pb,1,s->alt_inter_vlc); /* Alternative Inter VLC */
put_bits(&s->pb,1,0); /* Modified Quantization: off */
put_bits(&s->pb,1,1); /* "1" to prevent start code emulation */
put_bits(&s->pb,3,0); /* Reserved */
put_bits(&s->pb, 1, 0); /* mb coded */
cbpc = cbp & 3;
- if(s->dquant) cbpc+= 8;
cbpy = cbp >> 2;
- cbpy ^= 0xf;
+ if(s->alt_inter_vlc==0 || cbpc!=3)
+ cbpy ^= 0xF;
+ if(s->dquant) cbpc+= 8;
if(s->mv_type==MV_TYPE_16X16){
put_bits(&s->pb,
inter_MCBPC_bits[cbpc],
i = 0;
if (s->h263_aic && s->mb_intra)
rl = &rl_intra_aic;
+
+ if(s->alt_inter_vlc && !s->mb_intra){
+ int aic_vlc_bits=0;
+ int inter_vlc_bits=0;
+ int wrong_pos=-1;
+ int aic_code;
+
+ last_index = s->block_last_index[n];
+ last_non_zero = i - 1;
+ for (; i <= last_index; i++) {
+ j = s->intra_scantable.permutated[i];
+ level = block[j];
+ if (level) {
+ run = i - last_non_zero - 1;
+ last = (i == last_index);
+
+ code = get_rl_index(rl, last, run, level);
+ aic_code = get_rl_index(&rl_intra_aic, last, run, level);
+ inter_vlc_bits += rl->table_vlc[code][1]+1;
+ aic_vlc_bits += rl_intra_aic.table_vlc[aic_code][1]+1;
+
+ if (code == rl->n) {
+ inter_vlc_bits += 1+6+8;
+ }
+ if (aic_code == rl_intra_aic.n) {
+ aic_vlc_bits += 1+6+8;
+ wrong_pos += run + 1;
+ }else
+ wrong_pos += wrong_run[aic_code];
+ last_non_zero = i;
+ }
+ }
+ i = 0;
+ if(aic_vlc_bits < inter_vlc_bits && wrong_pos > 63)
+ rl = &rl_intra_aic;
+ }
}
/* AC coefs */
s->mcsel= get_bits1(&s->gb);
else s->mcsel= 0;
cbpy = get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1);
- cbp = (cbpc & 3) | ((cbpy ^ 0xf) << 2);
+
+ if(s->alt_inter_vlc==0 || (cbpc & 3)!=3)
+ cbpy ^= 0xF;
+
+ cbp = (cbpc & 3) | (cbpy << 2);
if (dquant) {
change_qscale(s, quant_tab[get_bits(&s->gb, 2)]);
}
int code, level, i, j, last, run;
RLTable *rl = &rl_inter;
const uint8_t *scan_table;
+ GetBitContext gb= s->gb;
scan_table = s->intra_scantable.permutated;
if (s->h263_aic && s->mb_intra) {
s->block_last_index[n] = i - 1;
return 0;
}
-
+retry:
for(;;) {
code = get_vlc2(&s->gb, rl->vlc.table, TEX_VLC_BITS, 2);
if (code < 0){
}
i += run;
if (i >= 64){
+ if(s->alt_inter_vlc && rl == &rl_inter && !s->mb_intra){
+ //looks like a hack but no, its the way its supposed to work ...
+ rl = &rl_intra_aic;
+ i = 0;
+ s->gb= gb;
+ memset(block, 0, sizeof(DCTELEM)*64);
+ goto retry;
+ }
av_log(s->avctx, AV_LOG_ERROR, "run overflow at %dx%d\n", s->mb_x, s->mb_y);
return -1;
}
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "Independent Segment Decoding not supported\n");
}
- if (get_bits1(&s->gb) != 0) {
- av_log(s->avctx, AV_LOG_ERROR, "Alternative Inter VLC not supported\n");
- }
+ s->alt_inter_vlc= get_bits1(&s->gb);
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "Modified Quantization not supported\n");
}
}
if(s->avctx->debug&FF_DEBUG_PICT_INFO){
- av_log(s->avctx, AV_LOG_DEBUG, "qp:%d %c size:%d rnd:%d%s%s%s%s%s\n",
+ av_log(s->avctx, AV_LOG_DEBUG, "qp:%d %c size:%d rnd:%d%s%s%s%s%s%s\n",
s->qscale, av_get_pict_type_char(s->pict_type),
s->gb.size_in_bits, 1-s->no_rounding,
s->obmc ? " AP" : "",
s->umvplus ? " UMV" : "",
s->h263_long_vectors ? " LONG" : "",
s->h263_plus ? " +" : "",
- s->h263_aic ? " AIC" : ""
+ s->h263_aic ? " AIC" : "",
+ s->alt_inter_vlc ? " AIV" : ""
);
}
#if 1