static void init_frame(VP8D_COMP *pbi) {
VP8_COMMON *const pc = &pbi->common;
MACROBLOCKD *const xd = &pbi->mb;
if (pc->frame_type == KEY_FRAME) {
/* Various keyframe initializations */
memcpy(pc->fc.mvc, vp8_default_mv_context, sizeof(vp8_default_mv_context));
vp8_init_mbmode_probs(pc);
vp8_default_coef_probs(pc);
/* reset the segment feature data to 0 with delta coding (Default state). */
memset(xd->segment_feature_data, 0, sizeof(xd->segment_feature_data));
xd->mb_segement_abs_delta = SEGMENT_DELTADATA;
/* reset the mode ref deltasa for loop filter */
memset(xd->ref_lf_deltas, 0, sizeof(xd->ref_lf_deltas));
memset(xd->mode_lf_deltas, 0, sizeof(xd->mode_lf_deltas));
/* All buffers are implicitly updated on key frames. */
pc->refresh_golden_frame = 1;
pc->refresh_alt_ref_frame = 1;
pc->copy_buffer_to_gf = 0;
pc->copy_buffer_to_arf = 0;
/* Note that Golden and Altref modes cannot be used on a key frame so
* ref_frame_sign_bias[] is undefined and meaningless
*/
pc->ref_frame_sign_bias[GOLDEN_FRAME] = 0;
pc->ref_frame_sign_bias[ALTREF_FRAME] = 0;
} else {
/* To enable choice of different interploation filters */
if (!pc->use_bilinear_mc_filter) {
xd->subpixel_predict = vp8_sixtap_predict4x4;
xd->subpixel_predict8x4 = vp8_sixtap_predict8x4;
xd->subpixel_predict8x8 = vp8_sixtap_predict8x8;
xd->subpixel_predict16x16 = vp8_sixtap_predict16x16;
} else {
xd->subpixel_predict = vp8_bilinear_predict4x4;
xd->subpixel_predict8x4 = vp8_bilinear_predict8x4;
xd->subpixel_predict8x8 = vp8_bilinear_predict8x8;
xd->subpixel_predict16x16 = vp8_bilinear_predict16x16;
}
if (pbi->decoded_key_frame && pbi->ec_enabled && !pbi->ec_active) {
pbi->ec_active = 1;
}
}
xd->left_context = &pc->left_context;
xd->mode_info_context = pc->mi;
xd->frame_type = pc->frame_type;
xd->mode_info_context->mbmi.mode = DC_PRED;
xd->mode_info_stride = pc->mode_info_stride;
xd->corrupted = 0; /* init without corruption */
xd->fullpixel_mask = 0xffffffff;
if (pc->full_pixel) xd->fullpixel_mask = 0xfffffff8;
}
void vp8_create_common(VP8_COMMON *oci)
{
vp8_machine_specific_config(oci);
vp8_default_coef_probs(oci);
vp8_init_mbmode_probs(oci);
vp8_default_bmode_probs(oci->fc.bmode_prob);
oci->mb_no_coeff_skip = 1;
oci->no_lpf = 0;
oci->simpler_lpf = 0;
oci->use_bilinear_mc_filter = 0;
oci->full_pixel = 0;
oci->multi_token_partition = ONE_PARTITION;
oci->clr_type = REG_YUV;
oci->clamp_type = RECON_CLAMP_REQUIRED;
/* Initialise reference frame sign bias structure to defaults */
vpx_memset(oci->ref_frame_sign_bias, 0, sizeof(oci->ref_frame_sign_bias));
/* Default disable buffer to buffer copying */
oci->copy_buffer_to_gf = 0;
oci->copy_buffer_to_arf = 0;
}
