From dc4b78d9ddcbb9715f22c53f8c2200560d4ac558 Mon Sep 17 00:00:00 2001 From: Mike Melanson Date: Sat, 21 May 2005 04:43:36 +0000 Subject: [PATCH] render by the slice rather than the plane Originally committed as revision 4290 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/vp3.c | 260 ++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 255 insertions(+), 5 deletions(-) diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index 34c780cf23..2a07fb2acc 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -2143,6 +2143,248 @@ static void reverse_dc_prediction(Vp3DecodeContext *s, } } +/* + * Perform the final rendering for a particular slice of data. + * The slice number ranges from 0..(macroblock_height - 1). + */ +static void render_slice(Vp3DecodeContext *s, int slice) +{ + int x, y; + int m, n; + int i; /* indicates current fragment */ + int16_t *dequantizer; + DCTELEM __align16 block[64]; + unsigned char *output_plane; + unsigned char *last_plane; + unsigned char *golden_plane; + int stride; + int motion_x = 0xdeadbeef, motion_y = 0xdeadbeef; + int upper_motion_limit, lower_motion_limit; + int motion_halfpel_index; + uint8_t *motion_source; + int plane; + int plane_width; + int plane_height; + int slice_height; + int current_macroblock_entry = slice * s->macroblock_width * 6; + + if (slice >= s->macroblock_height) + return; + + for (plane = 0; plane < 3; plane++) { + + /* set up plane-specific parameters */ + if (plane == 0) { + output_plane = s->current_frame.data[0]; + last_plane = s->last_frame.data[0]; + golden_plane = s->golden_frame.data[0]; + stride = s->current_frame.linesize[0]; + if (!s->flipped_image) stride = -stride; + upper_motion_limit = 7 * s->current_frame.linesize[0]; + lower_motion_limit = s->height * s->current_frame.linesize[0] + s->width - 8; + y = slice * FRAGMENT_PIXELS * 2; + plane_width = s->width; + plane_height = s->height; + slice_height = y + FRAGMENT_PIXELS * 2; + i = s->macroblock_fragments[current_macroblock_entry + 0]; + } else if (plane == 1) { + output_plane = s->current_frame.data[1]; + last_plane = s->last_frame.data[1]; + golden_plane = s->golden_frame.data[1]; + stride = s->current_frame.linesize[1]; + if (!s->flipped_image) stride = -stride; + upper_motion_limit = 7 * s->current_frame.linesize[1]; + lower_motion_limit = (s->height / 2) * s->current_frame.linesize[1] + (s->width / 2) - 8; + y = slice * FRAGMENT_PIXELS; + plane_width = s->width / 2; + plane_height = s->height / 2; + slice_height = y + FRAGMENT_PIXELS; + i = s->macroblock_fragments[current_macroblock_entry + 4]; + } else { + output_plane = s->current_frame.data[2]; + last_plane = s->last_frame.data[2]; + golden_plane = s->golden_frame.data[2]; + stride = s->current_frame.linesize[2]; + if (!s->flipped_image) stride = -stride; + upper_motion_limit = 7 * s->current_frame.linesize[2]; + lower_motion_limit = (s->height / 2) * s->current_frame.linesize[2] + (s->width / 2) - 8; + y = slice * FRAGMENT_PIXELS; + plane_width = s->width / 2; + plane_height = s->height / 2; + slice_height = y + FRAGMENT_PIXELS; + i = s->macroblock_fragments[current_macroblock_entry + 5]; + } + + if(ABS(stride) > 2048) + return; //various tables are fixed size + + /* for each fragment row in the slice (both of them)... */ + for (; y < slice_height; y += 8) { + + /* for each fragment in a row... */ + for (x = 0; x < plane_width; x += 8, i++) { + + if ((i < 0) || (i >= s->fragment_count)) { + av_log(s->avctx, AV_LOG_ERROR, " vp3:render_slice(): bad fragment number (%d)\n", i); + return; + } + + /* transform if this block was coded */ + if ((s->all_fragments[i].coding_method != MODE_COPY) && + !((s->avctx->flags & CODEC_FLAG_GRAY) && plane)) { + + if ((s->all_fragments[i].coding_method == MODE_USING_GOLDEN) || + (s->all_fragments[i].coding_method == MODE_GOLDEN_MV)) + motion_source= golden_plane; + else + motion_source= last_plane; + + motion_source += s->all_fragments[i].first_pixel; + motion_halfpel_index = 0; + + /* sort out the motion vector if this fragment is coded + * using a motion vector method */ + if ((s->all_fragments[i].coding_method > MODE_INTRA) && + (s->all_fragments[i].coding_method != MODE_USING_GOLDEN)) { + int src_x, src_y; + motion_x = s->all_fragments[i].motion_x; + motion_y = s->all_fragments[i].motion_y; + if(plane){ + motion_x= (motion_x>>1) | (motion_x&1); + motion_y= (motion_y>>1) | (motion_y&1); + } + + src_x= (motion_x>>1) + x; + src_y= (motion_y>>1) + y; + if ((motion_x == 127) || (motion_y == 127)) + av_log(s->avctx, AV_LOG_ERROR, " help! got invalid motion vector! (%X, %X)\n", motion_x, motion_y); + + motion_halfpel_index = motion_x & 0x01; + motion_source += (motion_x >> 1); + + motion_halfpel_index |= (motion_y & 0x01) << 1; + motion_source += ((motion_y >> 1) * stride); + + if(src_x<0 || src_y<0 || src_x + 9 >= plane_width || src_y + 9 >= plane_height){ + uint8_t *temp= s->edge_emu_buffer; + if(stride<0) temp -= 9*stride; + else temp += 9*stride; + + ff_emulated_edge_mc(temp, motion_source, stride, 9, 9, src_x, src_y, plane_width, plane_height); + motion_source= temp; + } + } + + + /* first, take care of copying a block from either the + * previous or the golden frame */ + if (s->all_fragments[i].coding_method != MODE_INTRA) { + /* Note, it is possible to implement all MC cases with + put_no_rnd_pixels_l2 which would look more like the + VP3 source but this would be slower as + put_no_rnd_pixels_tab is better optimzed */ + if(motion_halfpel_index != 3){ + s->dsp.put_no_rnd_pixels_tab[1][motion_halfpel_index]( + output_plane + s->all_fragments[i].first_pixel, + motion_source, stride, 8); + }else{ + int d= (motion_x ^ motion_y)>>31; // d is 0 if motion_x and _y have the same sign, else -1 + s->dsp.put_no_rnd_pixels_l2[1]( + output_plane + s->all_fragments[i].first_pixel, + motion_source - d, + motion_source + stride + 1 + d, + stride, 8); + } + dequantizer = s->inter_dequant; + }else{ + if (plane == 0) + dequantizer = s->intra_y_dequant; + else + dequantizer = s->intra_c_dequant; + } + + /* dequantize the DCT coefficients */ + debug_idct("fragment %d, coding mode %d, DC = %d, dequant = %d:\n", + i, s->all_fragments[i].coding_method, + DC_COEFF(i), dequantizer[0]); + + if(s->avctx->idct_algo==FF_IDCT_VP3){ + Coeff *coeff= s->coeffs + i; + memset(block, 0, sizeof(block)); + while(coeff->next){ + block[coeff->index]= coeff->coeff * dequantizer[coeff->index]; + coeff= coeff->next; + } + }else{ + Coeff *coeff= s->coeffs + i; + memset(block, 0, sizeof(block)); + while(coeff->next){ + block[coeff->index]= (coeff->coeff * dequantizer[coeff->index] + 2)>>2; + coeff= coeff->next; + } + } + + /* invert DCT and place (or add) in final output */ + + if (s->all_fragments[i].coding_method == MODE_INTRA) { + if(s->avctx->idct_algo!=FF_IDCT_VP3) + block[0] += 128<<3; + s->dsp.idct_put( + output_plane + s->all_fragments[i].first_pixel, + stride, + block); + } else { + s->dsp.idct_add( + output_plane + s->all_fragments[i].first_pixel, + stride, + block); + } + + debug_idct("block after idct_%s():\n", + (s->all_fragments[i].coding_method == MODE_INTRA)? + "put" : "add"); + for (m = 0; m < 8; m++) { + for (n = 0; n < 8; n++) { + debug_idct(" %3d", *(output_plane + + s->all_fragments[i].first_pixel + (m * stride + n))); + } + debug_idct("\n"); + } + debug_idct("\n"); + + } else { + + /* copy directly from the previous frame */ + s->dsp.put_pixels_tab[1][0]( + output_plane + s->all_fragments[i].first_pixel, + last_plane + s->all_fragments[i].first_pixel, + stride, 8); + + } + } + } + } + + /* future loop filter logic goes here... */ + /* algorithm: + * if (slice != 0) + * run filter on 1st row of Y slice + * run filter on U slice + * run filter on V slice + * run filter on 2nd row of Y slice + */ + + /* this looks like a good place for slice dispatch... */ + /* algorithm: + * if (slice > 0) + * dispatch (slice - 1); + * if (slice == s->macroblock_height - 1) + * dispatch (slice); // handle last slice + */ + + emms_c(); +} + /* * This function performs the final rendering of each fragment's data * onto the output frame. @@ -2774,6 +3016,7 @@ static int vp3_decode_frame(AVCodecContext *avctx, Vp3DecodeContext *s = avctx->priv_data; GetBitContext gb; static int counter = 0; + int i; init_get_bits(&gb, buf, buf_size * 8); @@ -2917,22 +3160,29 @@ if (!s->keyframe) { {START_TIMER reverse_dc_prediction(s, 0, s->fragment_width, s->fragment_height); - STOP_TIMER("reverse_dc_prediction")} - {START_TIMER - render_fragments(s, 0, s->width, s->height, 0); - STOP_TIMER("render_fragments")} - if ((avctx->flags & CODEC_FLAG_GRAY) == 0) { reverse_dc_prediction(s, s->u_fragment_start, s->fragment_width / 2, s->fragment_height / 2); reverse_dc_prediction(s, s->v_fragment_start, s->fragment_width / 2, s->fragment_height / 2); + } + STOP_TIMER("reverse_dc_prediction")} + {START_TIMER + +#if 1 + for (i = 0; i < s->macroblock_height; i++) + render_slice(s, i); +#else + render_fragments(s, 0, s->width, s->height, 0); + if ((avctx->flags & CODEC_FLAG_GRAY) == 0) { render_fragments(s, s->u_fragment_start, s->width / 2, s->height / 2, 1); render_fragments(s, s->v_fragment_start, s->width / 2, s->height / 2, 2); } else { memset(s->current_frame.data[1], 0x80, s->width * s->height / 4); memset(s->current_frame.data[2], 0x80, s->width * s->height / 4); } +#endif + STOP_TIMER("render_fragments")} {START_TIMER apply_loop_filter(s);