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/*
* 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
*/
#include <va/va.h>
#include <va/va_dec_jpeg.h>
#include "hwaccel.h"
#include "vaapi_decode.h"
#include "mjpegdec.h"
static int vaapi_mjpeg_start_frame(AVCodecContext *avctx,
av_unused const uint8_t *buffer,
av_unused uint32_t size)
{
const MJpegDecodeContext *s = avctx->priv_data;
VAAPIDecodePicture *pic = s->hwaccel_picture_private;
VAPictureParameterBufferJPEGBaseline pp;
int err, i;
pic->output_surface = ff_vaapi_get_surface_id(s->picture_ptr);
pp = (VAPictureParameterBufferJPEGBaseline) {
.picture_width = avctx->width,
.picture_height = avctx->height,
.num_components = s->nb_components,
};
for (i = 0; i < s->nb_components; i++) {
pp.components[i].component_id = s->component_id[i];
pp.components[i].h_sampling_factor = s->h_count[i];
pp.components[i].v_sampling_factor = s->v_count[i];
pp.components[i].quantiser_table_selector = s->quant_index[i];
}
err = ff_vaapi_decode_make_param_buffer(avctx, pic,
VAPictureParameterBufferType,
&pp, sizeof(pp));
if (err < 0)
goto fail;
return 0;
fail:
ff_vaapi_decode_cancel(avctx, pic);
return err;
}
static int vaapi_mjpeg_end_frame(AVCodecContext *avctx)
{
const MJpegDecodeContext *s = avctx->priv_data;
VAAPIDecodePicture *pic = s->hwaccel_picture_private;
return ff_vaapi_decode_issue(avctx, pic);
}
static int vaapi_mjpeg_decode_slice(AVCodecContext *avctx,
const uint8_t *buffer,
uint32_t size)
{
const MJpegDecodeContext *s = avctx->priv_data;
VAAPIDecodePicture *pic = s->hwaccel_picture_private;
VAHuffmanTableBufferJPEGBaseline huff;
VAIQMatrixBufferJPEGBaseline quant;
VASliceParameterBufferJPEGBaseline sp;
int err, i, j;
memset(&huff, 0, sizeof(huff));
for (i = 0; i < 2; i++) {
huff.load_huffman_table[i] = 1;
for (j = 0; j < 16; j++)
huff.huffman_table[i].num_dc_codes[j] = s->raw_huffman_lengths[0][i][j];
for (j = 0; j < 12; j++)
huff.huffman_table[i].dc_values[j] = s->raw_huffman_values[0][i][j];
for (j = 0; j < 16; j++)
huff.huffman_table[i].num_ac_codes[j] = s->raw_huffman_lengths[1][i][j];
for (j = 0; j < 162; j++)
huff.huffman_table[i].ac_values[j] = s->raw_huffman_values[1][i][j];
}
err = ff_vaapi_decode_make_param_buffer(avctx, pic,
VAHuffmanTableBufferType,
&huff, sizeof(huff));
if (err < 0)
goto fail;
memset(&quant, 0, sizeof(quant));
for (i = 0; i < 4; i++) {
quant.load_quantiser_table[i] = 1;
for (j = 0; j < 64; j++)
quant.quantiser_table[i][j] = s->quant_matrixes[i][j];
}
err = ff_vaapi_decode_make_param_buffer(avctx, pic,
VAIQMatrixBufferType,
&quant, sizeof(quant));
if (err < 0)
goto fail;
sp = (VASliceParameterBufferJPEGBaseline) {
.slice_data_size = size,
.slice_data_offset = 0,
.slice_data_flag = VA_SLICE_DATA_FLAG_ALL,
.slice_horizontal_position = 0,
.slice_vertical_position = 0,
.restart_interval = s->restart_interval,
.num_mcus = s->mb_width * s->mb_height,
};
sp.num_components = s->nb_components;
for (i = 0; i < s->nb_components; i++) {
sp.components[i].component_selector = s->component_id[s->comp_index[i]];
sp.components[i].dc_table_selector = s->dc_index[i];
sp.components[i].ac_table_selector = s->ac_index[i];
}
err = ff_vaapi_decode_make_slice_buffer(avctx, pic, &sp, sizeof(sp), buffer, size);
if (err)
goto fail;
return 0;
fail:
ff_vaapi_decode_cancel(avctx, pic);
return err;
}
const AVHWAccel ff_mjpeg_vaapi_hwaccel = {
.name = "mjpeg_vaapi",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_MJPEG,
.pix_fmt = AV_PIX_FMT_VAAPI,
.start_frame = &vaapi_mjpeg_start_frame,
.end_frame = &vaapi_mjpeg_end_frame,
.decode_slice = &vaapi_mjpeg_decode_slice,
.frame_priv_data_size = sizeof(VAAPIDecodePicture),
.init = &ff_vaapi_decode_init,
.uninit = &ff_vaapi_decode_uninit,
.frame_params = &ff_vaapi_common_frame_params,
.priv_data_size = sizeof(VAAPIDecodeContext),
.caps_internal = HWACCEL_CAP_ASYNC_SAFE,
};
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