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