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