356 lines
16 KiB
C
Executable File
356 lines
16 KiB
C
Executable File
/*
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* H.26L/H.264/AVC/JVT/14496-10/... decoder
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* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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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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#undef FUNC
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#undef PIXEL_SHIFT
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#if SIMPLE
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# define FUNC(n) AV_JOIN(n ## _simple_, BITS)
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# define PIXEL_SHIFT (BITS >> 4)
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#else
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# define FUNC(n) n ## _complex
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# define PIXEL_SHIFT h->pixel_shift
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#endif
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#undef CHROMA_IDC
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#define CHROMA_IDC 1
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#include "h264_mc_template.c"
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#undef CHROMA_IDC
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#define CHROMA_IDC 2
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#include "h264_mc_template.c"
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static av_noinline void FUNC(hl_decode_mb)(const H264Context *h, H264SliceContext *sl)
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{
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const int mb_x = sl->mb_x;
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const int mb_y = sl->mb_y;
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const int mb_xy = sl->mb_xy;
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const int mb_type = h->cur_pic.mb_type[mb_xy];
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uint8_t *dest_y, *dest_cb, *dest_cr;
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int linesize, uvlinesize /*dct_offset*/;
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int i, j;
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const int *block_offset = &h->block_offset[0];
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const int transform_bypass = !SIMPLE && (sl->qscale == 0 && h->ps.sps->transform_bypass);
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void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
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const int block_h = 16 >> h->chroma_y_shift;
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const int chroma422 = CHROMA422(h);
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dest_y = h->cur_pic.f->data[0] + ((mb_x << PIXEL_SHIFT) + mb_y * sl->linesize) * 16;
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dest_cb = h->cur_pic.f->data[1] + (mb_x << PIXEL_SHIFT) * 8 + mb_y * sl->uvlinesize * block_h;
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dest_cr = h->cur_pic.f->data[2] + (mb_x << PIXEL_SHIFT) * 8 + mb_y * sl->uvlinesize * block_h;
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h->vdsp.prefetch(dest_y + (sl->mb_x & 3) * 4 * sl->linesize + (64 << PIXEL_SHIFT), sl->linesize, 4);
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h->vdsp.prefetch(dest_cb + (sl->mb_x & 7) * sl->uvlinesize + (64 << PIXEL_SHIFT), dest_cr - dest_cb, 2);
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h->list_counts[mb_xy] = sl->list_count;
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if (!SIMPLE && MB_FIELD(sl)) {
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linesize = sl->mb_linesize = sl->linesize * 2;
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uvlinesize = sl->mb_uvlinesize = sl->uvlinesize * 2;
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block_offset = &h->block_offset[48];
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if (mb_y & 1) { // FIXME move out of this function?
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dest_y -= sl->linesize * 15;
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dest_cb -= sl->uvlinesize * (block_h - 1);
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dest_cr -= sl->uvlinesize * (block_h - 1);
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}
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if (FRAME_MBAFF(h)) {
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int list;
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for (list = 0; list < sl->list_count; list++) {
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if (!USES_LIST(mb_type, list))
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continue;
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if (IS_16X16(mb_type)) {
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int8_t *ref = &sl->ref_cache[list][scan8[0]];
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fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (sl->mb_y & 1), 1);
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} else {
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for (i = 0; i < 16; i += 4) {
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int ref = sl->ref_cache[list][scan8[i]];
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if (ref >= 0)
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fill_rectangle(&sl->ref_cache[list][scan8[i]], 2, 2,
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8, (16 + ref) ^ (sl->mb_y & 1), 1);
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}
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}
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}
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}
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} else {
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linesize = sl->mb_linesize = sl->linesize;
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uvlinesize = sl->mb_uvlinesize = sl->uvlinesize;
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// dct_offset = s->linesize * 16;
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}
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if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
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const int bit_depth = h->ps.sps->bit_depth_luma;
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if (PIXEL_SHIFT) {
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int j;
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GetBitContext gb;
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init_get_bits(&gb, sl->intra_pcm_ptr,
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ff_h264_mb_sizes[h->ps.sps->chroma_format_idc] * bit_depth);
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for (i = 0; i < 16; i++) {
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uint16_t *tmp_y = (uint16_t *)(dest_y + i * linesize);
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for (j = 0; j < 16; j++)
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tmp_y[j] = get_bits(&gb, bit_depth);
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}
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if (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
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if (!h->ps.sps->chroma_format_idc) {
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for (i = 0; i < block_h; i++) {
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uint16_t *tmp_cb = (uint16_t *)(dest_cb + i * uvlinesize);
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uint16_t *tmp_cr = (uint16_t *)(dest_cr + i * uvlinesize);
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for (j = 0; j < 8; j++) {
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tmp_cb[j] = tmp_cr[j] = 1 << (bit_depth - 1);
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}
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}
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} else {
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for (i = 0; i < block_h; i++) {
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uint16_t *tmp_cb = (uint16_t *)(dest_cb + i * uvlinesize);
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for (j = 0; j < 8; j++)
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tmp_cb[j] = get_bits(&gb, bit_depth);
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}
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for (i = 0; i < block_h; i++) {
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uint16_t *tmp_cr = (uint16_t *)(dest_cr + i * uvlinesize);
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for (j = 0; j < 8; j++)
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tmp_cr[j] = get_bits(&gb, bit_depth);
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}
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}
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}
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} else {
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for (i = 0; i < 16; i++)
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memcpy(dest_y + i * linesize, sl->intra_pcm_ptr + i * 16, 16);
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if (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
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if (!h->ps.sps->chroma_format_idc) {
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for (i = 0; i < 8; i++) {
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memset(dest_cb + i * uvlinesize, 1 << (bit_depth - 1), 8);
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memset(dest_cr + i * uvlinesize, 1 << (bit_depth - 1), 8);
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}
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} else {
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const uint8_t *src_cb = sl->intra_pcm_ptr + 256;
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const uint8_t *src_cr = sl->intra_pcm_ptr + 256 + block_h * 8;
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for (i = 0; i < block_h; i++) {
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memcpy(dest_cb + i * uvlinesize, src_cb + i * 8, 8);
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memcpy(dest_cr + i * uvlinesize, src_cr + i * 8, 8);
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}
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}
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}
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}
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} else {
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if (IS_INTRA(mb_type)) {
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if (sl->deblocking_filter)
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xchg_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
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uvlinesize, 1, 0, SIMPLE, PIXEL_SHIFT);
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if (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
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h->hpc.pred8x8[sl->chroma_pred_mode](dest_cb, uvlinesize);
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h->hpc.pred8x8[sl->chroma_pred_mode](dest_cr, uvlinesize);
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}
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hl_decode_mb_predict_luma(h, sl, mb_type, SIMPLE,
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transform_bypass, PIXEL_SHIFT,
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block_offset, linesize, dest_y, 0);
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if (sl->deblocking_filter)
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xchg_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
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uvlinesize, 0, 0, SIMPLE, PIXEL_SHIFT);
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} else {
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if (chroma422) {
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FUNC(hl_motion_422)(h, sl, dest_y, dest_cb, dest_cr,
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h->h264qpel.put_h264_qpel_pixels_tab,
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h->h264chroma.put_h264_chroma_pixels_tab,
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h->h264qpel.avg_h264_qpel_pixels_tab,
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h->h264chroma.avg_h264_chroma_pixels_tab,
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h->h264dsp.weight_h264_pixels_tab,
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h->h264dsp.biweight_h264_pixels_tab);
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} else {
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FUNC(hl_motion_420)(h, sl, dest_y, dest_cb, dest_cr,
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h->h264qpel.put_h264_qpel_pixels_tab,
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h->h264chroma.put_h264_chroma_pixels_tab,
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h->h264qpel.avg_h264_qpel_pixels_tab,
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h->h264chroma.avg_h264_chroma_pixels_tab,
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h->h264dsp.weight_h264_pixels_tab,
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h->h264dsp.biweight_h264_pixels_tab);
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}
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}
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hl_decode_mb_idct_luma(h, sl, mb_type, SIMPLE, transform_bypass,
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PIXEL_SHIFT, block_offset, linesize, dest_y, 0);
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if ((SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) &&
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(sl->cbp & 0x30)) {
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uint8_t *dest[2] = { dest_cb, dest_cr };
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if (transform_bypass) {
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if (IS_INTRA(mb_type) && h->ps.sps->profile_idc == 244 &&
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(sl->chroma_pred_mode == VERT_PRED8x8 ||
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sl->chroma_pred_mode == HOR_PRED8x8)) {
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h->hpc.pred8x8_add[sl->chroma_pred_mode](dest[0],
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block_offset + 16,
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sl->mb + (16 * 16 * 1 << PIXEL_SHIFT),
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uvlinesize);
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h->hpc.pred8x8_add[sl->chroma_pred_mode](dest[1],
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block_offset + 32,
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sl->mb + (16 * 16 * 2 << PIXEL_SHIFT),
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uvlinesize);
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} else {
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idct_add = h->h264dsp.h264_add_pixels4_clear;
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for (j = 1; j < 3; j++) {
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for (i = j * 16; i < j * 16 + 4; i++)
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if (sl->non_zero_count_cache[scan8[i]] ||
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dctcoef_get(sl->mb, PIXEL_SHIFT, i * 16))
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idct_add(dest[j - 1] + block_offset[i],
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sl->mb + (i * 16 << PIXEL_SHIFT),
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uvlinesize);
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if (chroma422) {
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for (i = j * 16 + 4; i < j * 16 + 8; i++)
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if (sl->non_zero_count_cache[scan8[i + 4]] ||
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dctcoef_get(sl->mb, PIXEL_SHIFT, i * 16))
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idct_add(dest[j - 1] + block_offset[i + 4],
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sl->mb + (i * 16 << PIXEL_SHIFT),
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uvlinesize);
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}
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}
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}
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} else {
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int qp[2];
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if (chroma422) {
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qp[0] = sl->chroma_qp[0] + 3;
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qp[1] = sl->chroma_qp[1] + 3;
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} else {
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qp[0] = sl->chroma_qp[0];
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qp[1] = sl->chroma_qp[1];
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}
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if (sl->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 0]])
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h->h264dsp.h264_chroma_dc_dequant_idct(sl->mb + (16 * 16 * 1 << PIXEL_SHIFT),
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h->ps.pps->dequant4_coeff[IS_INTRA(mb_type) ? 1 : 4][qp[0]][0]);
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if (sl->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 1]])
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h->h264dsp.h264_chroma_dc_dequant_idct(sl->mb + (16 * 16 * 2 << PIXEL_SHIFT),
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h->ps.pps->dequant4_coeff[IS_INTRA(mb_type) ? 2 : 5][qp[1]][0]);
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h->h264dsp.h264_idct_add8(dest, block_offset,
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sl->mb, uvlinesize,
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sl->non_zero_count_cache);
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}
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}
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}
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}
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#if !SIMPLE || BITS == 8
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#undef CHROMA_IDC
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#define CHROMA_IDC 3
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#include "h264_mc_template.c"
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static av_noinline void FUNC(hl_decode_mb_444)(const H264Context *h, H264SliceContext *sl)
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{
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const int mb_x = sl->mb_x;
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const int mb_y = sl->mb_y;
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const int mb_xy = sl->mb_xy;
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const int mb_type = h->cur_pic.mb_type[mb_xy];
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uint8_t *dest[3];
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int linesize;
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int i, j, p;
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const int *block_offset = &h->block_offset[0];
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const int transform_bypass = !SIMPLE && (sl->qscale == 0 && h->ps.sps->transform_bypass);
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const int plane_count = (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) ? 3 : 1;
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for (p = 0; p < plane_count; p++) {
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dest[p] = h->cur_pic.f->data[p] +
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((mb_x << PIXEL_SHIFT) + mb_y * sl->linesize) * 16;
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h->vdsp.prefetch(dest[p] + (sl->mb_x & 3) * 4 * sl->linesize + (64 << PIXEL_SHIFT),
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sl->linesize, 4);
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}
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h->list_counts[mb_xy] = sl->list_count;
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if (!SIMPLE && MB_FIELD(sl)) {
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linesize = sl->mb_linesize = sl->mb_uvlinesize = sl->linesize * 2;
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block_offset = &h->block_offset[48];
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if (mb_y & 1) // FIXME move out of this function?
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for (p = 0; p < 3; p++)
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dest[p] -= sl->linesize * 15;
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if (FRAME_MBAFF(h)) {
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int list;
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for (list = 0; list < sl->list_count; list++) {
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if (!USES_LIST(mb_type, list))
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continue;
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if (IS_16X16(mb_type)) {
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int8_t *ref = &sl->ref_cache[list][scan8[0]];
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fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (sl->mb_y & 1), 1);
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} else {
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for (i = 0; i < 16; i += 4) {
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int ref = sl->ref_cache[list][scan8[i]];
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if (ref >= 0)
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fill_rectangle(&sl->ref_cache[list][scan8[i]], 2, 2,
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8, (16 + ref) ^ (sl->mb_y & 1), 1);
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}
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}
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}
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}
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} else {
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linesize = sl->mb_linesize = sl->mb_uvlinesize = sl->linesize;
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}
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if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
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if (PIXEL_SHIFT) {
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const int bit_depth = h->ps.sps->bit_depth_luma;
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GetBitContext gb;
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init_get_bits(&gb, sl->intra_pcm_ptr, 768 * bit_depth);
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for (p = 0; p < plane_count; p++)
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for (i = 0; i < 16; i++) {
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uint16_t *tmp = (uint16_t *)(dest[p] + i * linesize);
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for (j = 0; j < 16; j++)
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tmp[j] = get_bits(&gb, bit_depth);
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}
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} else {
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for (p = 0; p < plane_count; p++)
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for (i = 0; i < 16; i++)
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memcpy(dest[p] + i * linesize,
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sl->intra_pcm_ptr + p * 256 + i * 16, 16);
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}
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} else {
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if (IS_INTRA(mb_type)) {
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if (sl->deblocking_filter)
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xchg_mb_border(h, sl, dest[0], dest[1], dest[2], linesize,
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linesize, 1, 1, SIMPLE, PIXEL_SHIFT);
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for (p = 0; p < plane_count; p++)
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hl_decode_mb_predict_luma(h, sl, mb_type, SIMPLE,
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transform_bypass, PIXEL_SHIFT,
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block_offset, linesize, dest[p], p);
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if (sl->deblocking_filter)
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xchg_mb_border(h, sl, dest[0], dest[1], dest[2], linesize,
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linesize, 0, 1, SIMPLE, PIXEL_SHIFT);
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} else {
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FUNC(hl_motion_444)(h, sl, dest[0], dest[1], dest[2],
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h->h264qpel.put_h264_qpel_pixels_tab,
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h->h264chroma.put_h264_chroma_pixels_tab,
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h->h264qpel.avg_h264_qpel_pixels_tab,
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h->h264chroma.avg_h264_chroma_pixels_tab,
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h->h264dsp.weight_h264_pixels_tab,
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h->h264dsp.biweight_h264_pixels_tab);
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}
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for (p = 0; p < plane_count; p++)
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hl_decode_mb_idct_luma(h, sl, mb_type, SIMPLE, transform_bypass,
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PIXEL_SHIFT, block_offset, linesize,
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dest[p], p);
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}
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}
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#endif
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