mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
2.1 KiB
56 lines
2.1 KiB
3 months ago
|
/*
|
||
|
|
* FFv1 codec
|
||
|
|
*
|
||
|
|
* Copyright (c) 2024 Lynne <dev@lynne.ee>
|
||
|
|
*
|
||
|
|
* This file is part of FFmpeg.
|
||
|
|
*
|
||
|
|
* FFmpeg is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU Lesser General Public
|
||
|
|
* License as published by the Free Software Foundation; either
|
||
|
|
* version 2.1 of the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
* Lesser General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Lesser General Public
|
||
|
|
* License along with FFmpeg; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
void main(void)
|
||
|
|
{
|
||
|
|
const uint slice_idx = gl_WorkGroupID.y*gl_NumWorkGroups.x + gl_WorkGroupID.x;
|
||
|
|
|
||
|
|
if (slice_ctx[slice_idx].slice_coding_mode == 0 && key_frame == 0)
|
||
|
|
return;
|
||
|
|
|
||
|
|
uint64_t slice_state_off = uint64_t(slice_state) +
|
||
|
|
slice_idx*plane_state_size*codec_planes;
|
||
|
|
|
||
|
|
#ifdef GOLOMB
|
||
|
|
uint64_t start = slice_state_off +
|
||
|
|
(gl_WorkGroupID.z*context_count +
|
||
|
|
gl_LocalInvocationID.x)*VLC_STATE_SIZE;
|
||
|
|
for (uint x = gl_LocalInvocationID.x; x < context_count; x += gl_WorkGroupSize.x) {
|
||
|
|
VlcState sb = VlcState(start);
|
||
|
|
sb.drift = int16_t(0);
|
||
|
|
sb.error_sum = uint16_t(4);
|
||
|
|
sb.bias = int8_t(0);
|
||
|
|
sb.count = uint8_t(1);
|
||
|
|
start += gl_WorkGroupSize.x*VLC_STATE_SIZE;
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
uint64_t start = slice_state_off +
|
||
|
|
(gl_WorkGroupID.z*context_count)*CONTEXT_SIZE +
|
||
|
|
(gl_LocalInvocationID.x << 2 /* dwords */); /* Bytes */
|
||
|
|
uint count_total = context_count*(CONTEXT_SIZE /* bytes */ >> 2 /* dwords */);
|
||
|
|
for (uint x = gl_LocalInvocationID.x; x < count_total; x += gl_WorkGroupSize.x) {
|
||
|
|
u32buf(start).v = 0x80808080;
|
||
|
|
start += gl_WorkGroupSize.x*(CONTEXT_SIZE >> 3 /* 1/8th of context */);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|