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/*
* Copyright (C) 2006-2012 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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 SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <assert.h>
#include <stddef.h>
#include <string.h>
#include <alloca.h>
#include "intel_batchbuffer.h"
#include "i965_decoder_utils.h"
#include "i965_drv_video.h"
#include "i965_defines.h"
/* Check wether codec layer incorrectly fills in slice_vertical_position */
int
mpeg2_wa_slice_vertical_position(
struct decode_state *decode_state,
VAPictureParameterBufferMPEG2 *pic_param
)
{
unsigned int i, j, mb_height, vpos, last_vpos = 0;
/* Assume progressive sequence if we got a progressive frame */
if (pic_param->picture_coding_extension.bits.progressive_frame)
return 0;
/* Wait for a field coded picture */
if (pic_param->picture_coding_extension.bits.picture_structure == MPEG_FRAME)
return -1;
assert(decode_state && decode_state->slice_params);
mb_height = (pic_param->vertical_size + 31) / 32;
for (j = 0; j < decode_state->num_slice_params; j++) {
struct buffer_store * const buffer_store =
decode_state->slice_params[j];
for (i = 0; i < buffer_store->num_elements; i++) {
VASliceParameterBufferMPEG2 * const slice_param =
((VASliceParameterBufferMPEG2 *)buffer_store->buffer) + i;
vpos = slice_param->slice_vertical_position;
if (vpos >= mb_height || vpos == last_vpos + 2) {
WARN_ONCE("codec layer incorrectly fills in MPEG-2 slice_vertical_position. Workaround applied\n");
return 1;
}
last_vpos = vpos;
}
}
return 0;
}
/* Generate flat scaling matrices for H.264 decoding */
void
avc_gen_default_iq_matrix(VAIQMatrixBufferH264 *iq_matrix)
{
/* Flat_4x4_16 */
memset(&iq_matrix->ScalingList4x4, 16, sizeof(iq_matrix->ScalingList4x4));
/* Flat_8x8_16 */
memset(&iq_matrix->ScalingList8x8, 16, sizeof(iq_matrix->ScalingList8x8));
}
/* Get first macroblock bit offset for BSD, minus EPB count (AVC) */
/* XXX: slice_data_bit_offset does not account for EPB */
unsigned int
avc_get_first_mb_bit_offset(
dri_bo *slice_data_bo,
VASliceParameterBufferH264 *slice_param,
unsigned int mode_flag
)
{
unsigned int slice_data_bit_offset = slice_param->slice_data_bit_offset;
if (mode_flag == ENTROPY_CABAC)
slice_data_bit_offset = ALIGN(slice_data_bit_offset, 0x8);
return slice_data_bit_offset;
}
/* Get first macroblock bit offset for BSD, with EPB count (AVC) */
/* XXX: slice_data_bit_offset does not account for EPB */
unsigned int
avc_get_first_mb_bit_offset_with_epb(
dri_bo *slice_data_bo,
VASliceParameterBufferH264 *slice_param,
unsigned int mode_flag
)
{
unsigned int in_slice_data_bit_offset = slice_param->slice_data_bit_offset;
unsigned int out_slice_data_bit_offset;
unsigned int i, j, buf_size, data_size, header_size;
uint8_t *buf;
int ret;
header_size = slice_param->slice_data_bit_offset / 8;
data_size = slice_param->slice_data_size - slice_param->slice_data_offset;
buf_size = (header_size * 3 + 1) / 2; // Max possible header size (x1.5)
if (buf_size > data_size)
buf_size = data_size;
buf = alloca(buf_size);
ret = dri_bo_get_subdata(
slice_data_bo, slice_param->slice_data_offset,
buf_size, buf
);
assert(ret == 0);
for (i = 2, j = 2; i < buf_size && j < header_size; i++, j++) {
if (buf[i] == 0x03 && buf[i - 1] == 0x00 && buf[i - 2] == 0x00)
i += 2, j++;
}
out_slice_data_bit_offset = in_slice_data_bit_offset % 8 + i * 8;
if (mode_flag == ENTROPY_CABAC)
out_slice_data_bit_offset = ALIGN(out_slice_data_bit_offset, 0x8);
return out_slice_data_bit_offset;
}
static inline uint8_t
get_ref_idx_state_1(const VAPictureH264 *va_pic, unsigned int frame_store_id)
{
const unsigned int is_long_term =
!!(va_pic->flags & VA_PICTURE_H264_LONG_TERM_REFERENCE);
const unsigned int is_top_field =
!!(va_pic->flags & VA_PICTURE_H264_TOP_FIELD);
const unsigned int is_bottom_field =
!!(va_pic->flags & VA_PICTURE_H264_BOTTOM_FIELD);
return ((is_long_term << 6) |
((is_top_field ^ is_bottom_field ^ 1) << 5) |
(frame_store_id << 1) |
((is_top_field ^ 1) & is_bottom_field));
}
/* Fill in Reference List Entries (Gen5+: ILK, SNB, IVB) */
void
gen5_fill_avc_ref_idx_state(
uint8_t state[32],
const VAPictureH264 ref_list[32],
unsigned int ref_list_count,
const GenFrameStore frame_store[MAX_GEN_REFERENCE_FRAMES]
)
{
unsigned int i, n, frame_idx;
for (i = 0, n = 0; i < ref_list_count; i++) {
const VAPictureH264 * const va_pic = &ref_list[i];
if (va_pic->flags & VA_PICTURE_H264_INVALID)
continue;
for (frame_idx = 0; frame_idx < MAX_GEN_REFERENCE_FRAMES; frame_idx++) {
const GenFrameStore * const fs = &frame_store[frame_idx];
if (fs->surface_id != VA_INVALID_ID &&
fs->surface_id == va_pic->picture_id) {
assert(frame_idx == fs->frame_store_id);
break;
}
}
assert(frame_idx < MAX_GEN_REFERENCE_FRAMES);
state[n++] = get_ref_idx_state_1(va_pic, frame_idx);
}
for (; n < 32; n++)
state[n] = 0xff;
}
/* Emit Reference List Entries (Gen6+: SNB, IVB) */
static void
gen6_send_avc_ref_idx_state_1(
struct intel_batchbuffer *batch,
unsigned int list,
const VAPictureH264 *ref_list,
unsigned int ref_list_count,
const GenFrameStore frame_store[MAX_GEN_REFERENCE_FRAMES]
)
{
uint8_t ref_idx_state[32];
BEGIN_BCS_BATCH(batch, 10);
OUT_BCS_BATCH(batch, MFX_AVC_REF_IDX_STATE | (10 - 2));
OUT_BCS_BATCH(batch, list);
gen5_fill_avc_ref_idx_state(
ref_idx_state,
ref_list, ref_list_count,
frame_store
);
intel_batchbuffer_data(batch, ref_idx_state, sizeof(ref_idx_state));
ADVANCE_BCS_BATCH(batch);
}
void
gen6_send_avc_ref_idx_state(
struct intel_batchbuffer *batch,
const VASliceParameterBufferH264 *slice_param,
const GenFrameStore frame_store[MAX_GEN_REFERENCE_FRAMES]
)
{
if (slice_param->slice_type == SLICE_TYPE_I ||
slice_param->slice_type == SLICE_TYPE_SI)
return;
/* RefPicList0 */
gen6_send_avc_ref_idx_state_1(
batch, 0,
slice_param->RefPicList0, slice_param->num_ref_idx_l0_active_minus1 + 1,
frame_store
);
if (slice_param->slice_type != SLICE_TYPE_B)
return;
/* RefPicList1 */
gen6_send_avc_ref_idx_state_1(
batch, 1,
slice_param->RefPicList1, slice_param->num_ref_idx_l1_active_minus1 + 1,
frame_store
);
}
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