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/*
* Copyright @ 2017 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWAR OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
* Pengfei Qu <Pengfei.Qu@intel.com>
*
*/
#include "i965_avc_encoder_common.h"
// H.264 table A-1 - level limits.
static const struct avc_level_limits {
int level_idc;
int max_mbps;
int max_fs;
int max_dpb_mbs;
int max_v_mv_r;
int max_mvs_per_2mb;
} avc_level_limits[] = {
{ INTEL_AVC_LEVEL_1, 1485, 99, 396, 64, 0 },
{ INTEL_AVC_LEVEL_11, 3000, 396, 900, 128, 0 },
{ INTEL_AVC_LEVEL_12, 6000, 396, 2376, 128, 0 },
{ INTEL_AVC_LEVEL_13, 11880, 396, 2376, 128, 0 },
{ INTEL_AVC_LEVEL_2, 11880, 396, 2376, 128, 0 },
{ INTEL_AVC_LEVEL_21, 19800, 792, 4752, 256, 0 },
{ INTEL_AVC_LEVEL_22, 20250, 1620, 8100, 256, 0 },
{ INTEL_AVC_LEVEL_3, 40500, 1620, 8100, 256, 32 },
{ INTEL_AVC_LEVEL_31, 108000, 3600, 18000, 512, 16 },
{ INTEL_AVC_LEVEL_32, 216000, 5120, 20480, 512, 16 },
{ INTEL_AVC_LEVEL_4, 245760, 8192, 32768, 512, 16 },
{ INTEL_AVC_LEVEL_41, 245760, 8192, 32768, 512, 16 },
{ INTEL_AVC_LEVEL_42, 522240, 8704, 34816, 512, 16 },
{ INTEL_AVC_LEVEL_5, 589824, 22080, 110400, 512, 16 },
{ INTEL_AVC_LEVEL_51, 983040, 36864, 184320, 512, 16 },
{ INTEL_AVC_LEVEL_52, 2073600, 36864, 184320, 512, 16 },
{ INTEL_AVC_LEVEL_6, 4177920, 139264, 696320, 8192, 16 },
{ INTEL_AVC_LEVEL_61, 8355840, 139264, 696320, 8192, 16 },
{ INTEL_AVC_LEVEL_62, 16711680, 139264, 696320, 8192, 16 },
};
static const struct avc_level_limits*
get_level_limits(int level_idc)
{
int i;
for (i = 1; i < ARRAY_ELEMS(avc_level_limits); i++) {
if (level_idc < avc_level_limits[i].level_idc)
break;
}
return &avc_level_limits[i - 1];
}
int
i965_avc_level_is_valid(int level_idc)
{
return get_level_limits(level_idc)->level_idc == level_idc;
}
int
i965_avc_get_max_mbps(int level_idc)
{
return get_level_limits(level_idc)->max_mbps;
};
unsigned int
i965_avc_get_profile_level_max_frame(struct avc_param * param,
int level_idc)
{
double bits_per_mb, tmpf;
int max_mbps, num_mb_per_frame;
uint64_t max_byte_per_frame0, max_byte_per_frame1;
unsigned int ret;
unsigned int scale_factor = 4;
if (level_idc >= INTEL_AVC_LEVEL_31 && level_idc <= INTEL_AVC_LEVEL_4)
bits_per_mb = 96.0;
else {
bits_per_mb = 192.0;
scale_factor = 2;
}
max_mbps = i965_avc_get_max_mbps(level_idc);
num_mb_per_frame = param->frame_width_in_mbs * param->frame_height_in_mbs;
tmpf = (double)num_mb_per_frame;
if (tmpf < max_mbps / 172.0)
tmpf = max_mbps / 172.0;
max_byte_per_frame0 = (uint64_t)(tmpf * bits_per_mb);
max_byte_per_frame1 = (uint64_t)(((double)max_mbps * 100) / param->frames_per_100s * bits_per_mb);
/* TODO: check VAEncMiscParameterTypeMaxFrameSize */
ret = (unsigned int)MIN(max_byte_per_frame0, max_byte_per_frame1);
ret = (unsigned int)MIN(ret, param->frame_width_in_pixel * param->frame_height_in_pixel * 3 / (2 * scale_factor));
return ret;
}
int
i965_avc_calculate_initial_qp(struct avc_param * param)
{
float x0 = 0, y0 = 1.19f, x1 = 1.75f, y1 = 1.75f;
unsigned frame_size;
int qp, delat_qp;
frame_size = (param->frame_width_in_pixel * param->frame_height_in_pixel * 3 / 2);
qp = (int)(1.0 / 1.2 * pow(10.0,
(log10(frame_size * 2.0 / 3.0 * ((float)param->frames_per_100s) /
((float)(param->target_bit_rate * 1000) * 100)) - x0) *
(y1 - y0) / (x1 - x0) + y0) + 0.5);
qp += 2;
delat_qp = (int)(9 - (param->vbv_buffer_size_in_bit * ((float)param->frames_per_100s) /
((float)(param->target_bit_rate * 1000) * 100)));
if (delat_qp > 0)
qp += delat_qp;
qp = CLAMP(1, 51, qp);
qp--;
return qp;
}
int
i965_avc_get_max_mv_len(int level_idc)
{
return get_level_limits(level_idc)->max_v_mv_r - 1;
}
int
i965_avc_get_max_mv_per_2mb(int level_idc)
{
return get_level_limits(level_idc)->max_mvs_per_2mb;
}
unsigned short
i965_avc_calc_skip_value(unsigned int enc_block_based_sip_en, unsigned int transform_8x8_flag, unsigned short skip_value)
{
if (!enc_block_based_sip_en) {
skip_value *= 3;
} else if (!transform_8x8_flag) {
skip_value /= 2;
}
return skip_value;
}
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