CoCalc -- picture

GitHub Repository: PojavLauncherTeam/mesa
Path: blob/21.2-virgl/src/gallium/frontends/va/picture_mjpeg.c
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/**************************************************************************
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 *
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 * Copyright 2017 Advanced Micro Devices, Inc.
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 * All Rights Reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the
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 * "Software"), to deal in the Software without restriction, including
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 * without limitation the rights to use, copy, modify, merge, publish,
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 * distribute, sub license, and/or sell copies of the Software, and to
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 * permit persons to whom the Software is furnished to do so, subject to
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 * the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the
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 * next paragraph) shall be included in all copies or substantial portions
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 * of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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 * IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR
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 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 *
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 **************************************************************************/
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#include "va_private.h"
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void vlVaHandlePictureParameterBufferMJPEG(vlVaDriver *drv, vlVaContext *context, vlVaBuffer *buf)
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{
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   VAPictureParameterBufferJPEGBaseline *mjpeg = buf->data;
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   unsigned sf;
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   int i;
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   assert(buf->size >= sizeof(VAPictureParameterBufferJPEGBaseline) && buf->num_elements == 1);
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   context->desc.mjpeg.picture_parameter.picture_width = mjpeg->picture_width;
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   context->desc.mjpeg.picture_parameter.picture_height = mjpeg->picture_height;
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   for (i = 0; i < mjpeg->num_components; ++i) {
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      context->desc.mjpeg.picture_parameter.components[i].component_id =
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         mjpeg->components[i].component_id;
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      context->desc.mjpeg.picture_parameter.components[i].h_sampling_factor =
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         mjpeg->components[i].h_sampling_factor;
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      context->desc.mjpeg.picture_parameter.components[i].v_sampling_factor =
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         mjpeg->components[i].v_sampling_factor;
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      context->desc.mjpeg.picture_parameter.components[i].quantiser_table_selector =
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         mjpeg->components[i].quantiser_table_selector;
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      sf = mjpeg->components[i].h_sampling_factor << 4 | mjpeg->components[i].v_sampling_factor;
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      context->mjpeg.sampling_factor <<= 8;
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      context->mjpeg.sampling_factor |= sf;
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   }
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   context->desc.mjpeg.picture_parameter.num_components = mjpeg->num_components;
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}
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void vlVaHandleIQMatrixBufferMJPEG(vlVaContext *context, vlVaBuffer *buf)
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{
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   VAIQMatrixBufferJPEGBaseline *mjpeg = buf->data;
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   assert(buf->size >= sizeof(VAIQMatrixBufferJPEGBaseline) && buf->num_elements == 1);
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   memcpy(&context->desc.mjpeg.quantization_table.load_quantiser_table, mjpeg->load_quantiser_table, 4);
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   memcpy(&context->desc.mjpeg.quantization_table.quantiser_table, mjpeg->quantiser_table, 4 * 64);
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}
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void vlVaHandleHuffmanTableBufferType(vlVaContext *context, vlVaBuffer *buf)
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{
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   VAHuffmanTableBufferJPEGBaseline *mjpeg = buf->data;
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   int i;
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   assert(buf->size >= sizeof(VASliceParameterBufferJPEGBaseline) && buf->num_elements == 1);
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   for (i = 0; i < 2; ++i) {
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      context->desc.mjpeg.huffman_table.load_huffman_table[i] = mjpeg->load_huffman_table[i];
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      memcpy(&context->desc.mjpeg.huffman_table.table[i].num_dc_codes,
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         mjpeg->huffman_table[i].num_dc_codes, 16);
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      memcpy(&context->desc.mjpeg.huffman_table.table[i].dc_values,
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         mjpeg->huffman_table[i].dc_values, 12);
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      memcpy(&context->desc.mjpeg.huffman_table.table[i].num_ac_codes,
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         mjpeg->huffman_table[i].num_ac_codes, 16);
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      memcpy(&context->desc.mjpeg.huffman_table.table[i].ac_values,
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         mjpeg->huffman_table[i].ac_values, 162);
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      memcpy(&context->desc.mjpeg.huffman_table.table[i].pad, mjpeg->huffman_table[i].pad, 2);
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   }
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}
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void vlVaHandleSliceParameterBufferMJPEG(vlVaContext *context, vlVaBuffer *buf)
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{
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   VASliceParameterBufferJPEGBaseline *mjpeg = buf->data;
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   int i;
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   assert(buf->size >= sizeof(VASliceParameterBufferJPEGBaseline) && buf->num_elements == 1);
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   context->desc.mjpeg.slice_parameter.slice_data_size = mjpeg->slice_data_size;
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   context->desc.mjpeg.slice_parameter.slice_data_offset = mjpeg->slice_data_offset;
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   context->desc.mjpeg.slice_parameter.slice_data_flag = mjpeg->slice_data_flag;
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   context->desc.mjpeg.slice_parameter.slice_horizontal_position = mjpeg->slice_horizontal_position;
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   context->desc.mjpeg.slice_parameter.slice_vertical_position = mjpeg->slice_vertical_position;
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   for (i = 0; i < mjpeg->num_components; ++i) {
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      context->desc.mjpeg.slice_parameter.components[i].component_selector =
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         mjpeg->components[i].component_selector;
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      context->desc.mjpeg.slice_parameter.components[i].dc_table_selector =
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         mjpeg->components[i].dc_table_selector;
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      context->desc.mjpeg.slice_parameter.components[i].ac_table_selector =
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         mjpeg->components[i].ac_table_selector;
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   }
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   context->desc.mjpeg.slice_parameter.num_components = mjpeg->num_components;
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   context->desc.mjpeg.slice_parameter.restart_interval = mjpeg->restart_interval;
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   context->desc.mjpeg.slice_parameter.num_mcus = mjpeg->num_mcus;
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}
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void vlVaGetJpegSliceHeader(vlVaContext *context)
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{
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   int size = 0, saved_size, len_pos, i;
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   uint16_t *bs;
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   uint8_t *p = context->mjpeg.slice_header;
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   /* SOI */
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   p[size++] = 0xff;
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   p[size++] = 0xd8;
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   /* DQT */
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   p[size++] = 0xff;
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   p[size++] = 0xdb;
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   len_pos = size++;
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   size++;
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   for (i = 0; i < 4; ++i) {
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      if (context->desc.mjpeg.quantization_table.load_quantiser_table[i] == 0)
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         continue;
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      p[size++] = i;
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      memcpy((p + size), &context->desc.mjpeg.quantization_table.quantiser_table[i], 64);
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      size += 64;
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   }
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   bs = (uint16_t*)&p[len_pos];
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   *bs = util_bswap16(size - 4);
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   saved_size = size;
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   /* DHT */
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   p[size++] = 0xff;
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   p[size++] = 0xc4;
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   len_pos = size++;
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   size++;
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   for (i = 0; i < 2; ++i) {
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      int num = 0, j;
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      if (context->desc.mjpeg.huffman_table.load_huffman_table[i] == 0)
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         continue;
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      p[size++] = 0x00 | i;
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      memcpy((p + size), &context->desc.mjpeg.huffman_table.table[i].num_dc_codes, 16);
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      size += 16;
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      for (j = 0; j < 16; ++j)
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         num += context->desc.mjpeg.huffman_table.table[i].num_dc_codes[j];
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      assert(num <= 12);
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      memcpy((p + size), &context->desc.mjpeg.huffman_table.table[i].dc_values, num);
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      size += num;
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   }
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   for (i = 0; i < 2; ++i) {
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      int num = 0, j;
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      if (context->desc.mjpeg.huffman_table.load_huffman_table[i] == 0)
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         continue;
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      p[size++] = 0x10 | i;
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      memcpy((p + size), &context->desc.mjpeg.huffman_table.table[i].num_ac_codes, 16);
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      size += 16;
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      for (j = 0; j < 16; ++j)
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         num += context->desc.mjpeg.huffman_table.table[i].num_ac_codes[j];
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      assert(num <= 162);
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      memcpy((p + size), &context->desc.mjpeg.huffman_table.table[i].ac_values, num);
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      size += num;
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   }
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   bs = (uint16_t*)&p[len_pos];
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   *bs = util_bswap16(size - saved_size - 2);
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   saved_size = size;
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   /* DRI */
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   if (context->desc.mjpeg.slice_parameter.restart_interval) {
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      p[size++] = 0xff;
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      p[size++] = 0xdd;
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      p[size++] = 0x00;
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      p[size++] = 0x04;
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      bs = (uint16_t*)&p[size++];
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      *bs = util_bswap16(context->desc.mjpeg.slice_parameter.restart_interval);
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      saved_size = ++size;
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   }
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   /* SOF */
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   p[size++] = 0xff;
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   p[size++] = 0xc0;
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   len_pos = size++;
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   size++;
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   p[size++] = 0x08;
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   bs = (uint16_t*)&p[size++];
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   *bs = util_bswap16(context->desc.mjpeg.picture_parameter.picture_height);
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   size++;
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   bs = (uint16_t*)&p[size++];
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   *bs = util_bswap16(context->desc.mjpeg.picture_parameter.picture_width);
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   size++;
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   p[size++] = context->desc.mjpeg.picture_parameter.num_components;
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   for (i = 0; i < context->desc.mjpeg.picture_parameter.num_components; ++i) {
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      p[size++] = context->desc.mjpeg.picture_parameter.components[i].component_id;
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      p[size++] = context->desc.mjpeg.picture_parameter.components[i].h_sampling_factor << 4 |
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                 context->desc.mjpeg.picture_parameter.components[i].v_sampling_factor;
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      p[size++] = context->desc.mjpeg.picture_parameter.components[i].quantiser_table_selector;
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   }
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   bs = (uint16_t*)&p[len_pos];
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   *bs = util_bswap16(size - saved_size - 2);
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   saved_size = size;
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   /* SOS */
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   p[size++] = 0xff;
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   p[size++] = 0xda;
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   len_pos = size++;
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   size++;
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   p[size++] = context->desc.mjpeg.slice_parameter.num_components;
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   for (i = 0; i < context->desc.mjpeg.slice_parameter.num_components; ++i) {
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      p[size++] = context->desc.mjpeg.slice_parameter.components[i].component_selector;
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      p[size++] = context->desc.mjpeg.slice_parameter.components[i].dc_table_selector << 4 |
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                 context->desc.mjpeg.slice_parameter.components[i].ac_table_selector;
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   }
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   p[size++] = 0x00;
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   p[size++] = 0x3f;
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   p[size++] = 0x00;
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   bs = (uint16_t*)&p[len_pos];
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   *bs = util_bswap16(size - saved_size - 2);
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   context->mjpeg.slice_header_size = size;
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}
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