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/*
* 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 encode_slice(inout SliceContext sc, const uint slice_idx)
{
int bits = bits_per_raw_sample;
#ifndef GOLOMB
if (sc.slice_coding_mode == 1) {
for (int p = 0; p < planes; p++) {
int h = sc.slice_dim.y;
if (p > 0 && p < 3)
h >>= chroma_shift.y;
for (int y = 0; y < h; y++)
encode_line_pcm(sc, y, p, 0, bits);
}
} else
#endif
{
uint64_t slice_state_off = uint64_t(slice_state) +
slice_idx*plane_state_size*codec_planes;
for (int p = 0; p < planes; p++) {
int run_index = 0;
int h = sc.slice_dim.y;
if (p > 0 && p < 3)
h >>= chroma_shift.y;
for (int y = 0; y < h; y++)
encode_line(sc, slice_state_off, y, p, 0, bits, run_index);
/* For the second chroma plane, reuse the first plane's state */
if (p != 1)
slice_state_off += plane_state_size;
}
}
finalize_slice(sc, slice_idx);
}
void main(void)
{
const uint slice_idx = gl_WorkGroupID.y*gl_NumWorkGroups.x + gl_WorkGroupID.x;
encode_slice(slice_ctx[slice_idx], slice_idx);
}
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