265 lines
11 KiB
C
265 lines
11 KiB
C
/*
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* Mpeg video formats-related defines and utility functions
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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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#include <stdint.h>
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#include "libavutil/common.h"
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#include "libavutil/frame.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/motion_vector.h"
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#include "libavutil/avassert.h"
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#include "avcodec.h"
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#include "mpegutils.h"
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static int add_mb(AVMotionVector *mb, uint32_t mb_type,
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int dst_x, int dst_y,
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int motion_x, int motion_y, int motion_scale,
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int direction)
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{
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mb->w = IS_8X8(mb_type) || IS_8X16(mb_type) ? 8 : 16;
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mb->h = IS_8X8(mb_type) || IS_16X8(mb_type) ? 8 : 16;
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mb->motion_x = motion_x;
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mb->motion_y = motion_y;
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mb->motion_scale = motion_scale;
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mb->dst_x = dst_x;
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mb->dst_y = dst_y;
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mb->src_x = dst_x + motion_x / motion_scale;
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mb->src_y = dst_y + motion_y / motion_scale;
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mb->source = direction ? 1 : -1;
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mb->flags = 0; // XXX: does mb_type contain extra information that could be exported here?
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return 1;
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}
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void ff_draw_horiz_band(AVCodecContext *avctx,
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AVFrame *cur, AVFrame *last,
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int y, int h, int picture_structure,
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int first_field, int low_delay)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
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int vshift = desc->log2_chroma_h;
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const int field_pic = picture_structure != PICT_FRAME;
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if (field_pic) {
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h <<= 1;
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y <<= 1;
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}
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h = FFMIN(h, avctx->height - y);
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if (field_pic && first_field &&
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!(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD))
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return;
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if (avctx->draw_horiz_band) {
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AVFrame *src;
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int offset[AV_NUM_DATA_POINTERS];
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int i;
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if (cur->pict_type == AV_PICTURE_TYPE_B || low_delay ||
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(avctx->slice_flags & SLICE_FLAG_CODED_ORDER))
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src = cur;
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else if (last)
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src = last;
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else
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return;
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if (cur->pict_type == AV_PICTURE_TYPE_B &&
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picture_structure == PICT_FRAME &&
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avctx->codec_id != AV_CODEC_ID_SVQ3) {
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for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
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offset[i] = 0;
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} else {
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offset[0]= y * src->linesize[0];
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offset[1]=
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offset[2]= (y >> vshift) * src->linesize[1];
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for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
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offset[i] = 0;
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}
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emms_c();
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avctx->draw_horiz_band(avctx, src, offset,
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y, picture_structure, h);
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}
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}
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void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_table,
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uint32_t *mbtype_table, int8_t *qscale_table, int16_t (*motion_val[2])[2],
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int mb_width, int mb_height, int mb_stride, int quarter_sample)
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{
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if ((avctx->export_side_data & AV_CODEC_EXPORT_DATA_MVS) && mbtype_table && motion_val[0]) {
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const int shift = 1 + quarter_sample;
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const int scale = 1 << shift;
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const int mv_sample_log2 = avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_SVQ3 ? 2 : 1;
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const int mv_stride = (mb_width << mv_sample_log2) +
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(avctx->codec->id == AV_CODEC_ID_H264 ? 0 : 1);
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int mb_x, mb_y, mbcount = 0;
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/* size is width * height * 2 * 4 where 2 is for directions and 4 is
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* for the maximum number of MB (4 MB in case of IS_8x8) */
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AVMotionVector *mvs = av_malloc_array(mb_width * mb_height, 2 * 4 * sizeof(AVMotionVector));
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if (!mvs)
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return;
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for (mb_y = 0; mb_y < mb_height; mb_y++) {
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for (mb_x = 0; mb_x < mb_width; mb_x++) {
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int i, direction, mb_type = mbtype_table[mb_x + mb_y * mb_stride];
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for (direction = 0; direction < 2; direction++) {
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if (!USES_LIST(mb_type, direction))
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continue;
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if (IS_8X8(mb_type)) {
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for (i = 0; i < 4; i++) {
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int sx = mb_x * 16 + 4 + 8 * (i & 1);
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int sy = mb_y * 16 + 4 + 8 * (i >> 1);
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int xy = (mb_x * 2 + (i & 1) +
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(mb_y * 2 + (i >> 1)) * mv_stride) << (mv_sample_log2 - 1);
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int mx = motion_val[direction][xy][0];
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int my = motion_val[direction][xy][1];
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mbcount += add_mb(mvs + mbcount, mb_type, sx, sy, mx, my, scale, direction);
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}
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} else if (IS_16X8(mb_type)) {
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for (i = 0; i < 2; i++) {
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int sx = mb_x * 16 + 8;
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int sy = mb_y * 16 + 4 + 8 * i;
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int xy = (mb_x * 2 + (mb_y * 2 + i) * mv_stride) << (mv_sample_log2 - 1);
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int mx = motion_val[direction][xy][0];
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int my = motion_val[direction][xy][1];
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if (IS_INTERLACED(mb_type))
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my *= 2;
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mbcount += add_mb(mvs + mbcount, mb_type, sx, sy, mx, my, scale, direction);
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}
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} else if (IS_8X16(mb_type)) {
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for (i = 0; i < 2; i++) {
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int sx = mb_x * 16 + 4 + 8 * i;
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int sy = mb_y * 16 + 8;
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int xy = (mb_x * 2 + i + mb_y * 2 * mv_stride) << (mv_sample_log2 - 1);
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int mx = motion_val[direction][xy][0];
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int my = motion_val[direction][xy][1];
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if (IS_INTERLACED(mb_type))
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my *= 2;
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mbcount += add_mb(mvs + mbcount, mb_type, sx, sy, mx, my, scale, direction);
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}
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} else {
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int sx = mb_x * 16 + 8;
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int sy = mb_y * 16 + 8;
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int xy = (mb_x + mb_y * mv_stride) << mv_sample_log2;
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int mx = motion_val[direction][xy][0];
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int my = motion_val[direction][xy][1];
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mbcount += add_mb(mvs + mbcount, mb_type, sx, sy, mx, my, scale, direction);
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}
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}
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}
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}
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if (mbcount) {
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AVFrameSideData *sd;
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av_log(avctx, AV_LOG_DEBUG, "Adding %d MVs info to frame %d\n", mbcount, avctx->frame_number);
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sd = av_frame_new_side_data(pict, AV_FRAME_DATA_MOTION_VECTORS, mbcount * sizeof(AVMotionVector));
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if (!sd) {
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av_freep(&mvs);
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return;
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}
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memcpy(sd->data, mvs, mbcount * sizeof(AVMotionVector));
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}
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av_freep(&mvs);
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}
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/* TODO: export all the following to make them accessible for users (and filters) */
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if (avctx->hwaccel || !mbtype_table)
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return;
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if (avctx->debug & (FF_DEBUG_SKIP | FF_DEBUG_QP | FF_DEBUG_MB_TYPE)) {
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int x,y;
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av_log(avctx, AV_LOG_DEBUG, "New frame, type: %c\n",
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av_get_picture_type_char(pict->pict_type));
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for (y = 0; y < mb_height; y++) {
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for (x = 0; x < mb_width; x++) {
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if (avctx->debug & FF_DEBUG_SKIP) {
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int count = mbskip_table ? mbskip_table[x + y * mb_stride] : 0;
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if (count > 9)
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count = 9;
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av_log(avctx, AV_LOG_DEBUG, "%1d", count);
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}
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if (avctx->debug & FF_DEBUG_QP) {
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av_log(avctx, AV_LOG_DEBUG, "%2d",
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qscale_table[x + y * mb_stride]);
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}
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if (avctx->debug & FF_DEBUG_MB_TYPE) {
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int mb_type = mbtype_table[x + y * mb_stride];
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// Type & MV direction
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if (IS_PCM(mb_type))
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av_log(avctx, AV_LOG_DEBUG, "P");
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else if (IS_INTRA(mb_type) && IS_ACPRED(mb_type))
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av_log(avctx, AV_LOG_DEBUG, "A");
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else if (IS_INTRA4x4(mb_type))
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av_log(avctx, AV_LOG_DEBUG, "i");
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else if (IS_INTRA16x16(mb_type))
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av_log(avctx, AV_LOG_DEBUG, "I");
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else if (IS_DIRECT(mb_type) && IS_SKIP(mb_type))
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av_log(avctx, AV_LOG_DEBUG, "d");
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else if (IS_DIRECT(mb_type))
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av_log(avctx, AV_LOG_DEBUG, "D");
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else if (IS_GMC(mb_type) && IS_SKIP(mb_type))
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av_log(avctx, AV_LOG_DEBUG, "g");
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else if (IS_GMC(mb_type))
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av_log(avctx, AV_LOG_DEBUG, "G");
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else if (IS_SKIP(mb_type))
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av_log(avctx, AV_LOG_DEBUG, "S");
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else if (!USES_LIST(mb_type, 1))
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av_log(avctx, AV_LOG_DEBUG, ">");
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else if (!USES_LIST(mb_type, 0))
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av_log(avctx, AV_LOG_DEBUG, "<");
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else {
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av_assert2(USES_LIST(mb_type, 0) && USES_LIST(mb_type, 1));
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av_log(avctx, AV_LOG_DEBUG, "X");
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}
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// segmentation
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if (IS_8X8(mb_type))
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av_log(avctx, AV_LOG_DEBUG, "+");
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else if (IS_16X8(mb_type))
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av_log(avctx, AV_LOG_DEBUG, "-");
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else if (IS_8X16(mb_type))
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av_log(avctx, AV_LOG_DEBUG, "|");
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else if (IS_INTRA(mb_type) || IS_16X16(mb_type))
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av_log(avctx, AV_LOG_DEBUG, " ");
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else
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av_log(avctx, AV_LOG_DEBUG, "?");
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if (IS_INTERLACED(mb_type))
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av_log(avctx, AV_LOG_DEBUG, "=");
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else
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av_log(avctx, AV_LOG_DEBUG, " ");
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}
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}
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av_log(avctx, AV_LOG_DEBUG, "\n");
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}
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}
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}
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