diff options
author | Pascal Massimino <pascal.massimino@gmail.com> | 2010-08-02 13:44:53 +0400 |
---|---|---|
committer | Pascal Massimino <pascal.massimino@gmail.com> | 2010-08-02 13:44:53 +0400 |
commit | d2840fa49cbfdc69561ef215d7bb8024a387e31c (patch) | |
tree | 540b033c07b5e108a1cfbd68d4b25e0d0aa34cbc /libavcodec/vp8.c | |
parent | eea72ee86383f275c882c6b6ca024a15403e4a9e (diff) |
only store intra prediction modes on the boundary for keyframes, not as a plane.
inter-frame behaviour unchanged.
Originally committed as revision 24664 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/vp8.c')
-rw-r--r-- | libavcodec/vp8.c | 69 |
1 files changed, 33 insertions, 36 deletions
diff --git a/libavcodec/vp8.c b/libavcodec/vp8.c index 9af92d5717..596cfc5a76 100644 --- a/libavcodec/vp8.c +++ b/libavcodec/vp8.c @@ -88,8 +88,8 @@ typedef struct { VP8FilterStrength *filter_strength; int mb_stride; - uint8_t *intra4x4_pred_mode; - uint8_t *intra4x4_pred_mode_base; + uint8_t *intra4x4_pred_mode_top; + uint8_t intra4x4_pred_mode_left[4]; uint8_t *segmentation_map; int b4_stride; @@ -211,20 +211,17 @@ static void vp8_decode_flush(AVCodecContext *avctx) av_freep(&s->macroblocks_base); av_freep(&s->filter_strength); - av_freep(&s->intra4x4_pred_mode_base); + av_freep(&s->intra4x4_pred_mode_top); av_freep(&s->top_nnz); av_freep(&s->edge_emu_buffer); av_freep(&s->top_border); av_freep(&s->segmentation_map); s->macroblocks = NULL; - s->intra4x4_pred_mode = NULL; } static int update_dimensions(VP8Context *s, int width, int height) { - int i; - if (avcodec_check_dimensions(s->avctx, width, height)) return AVERROR_INVALIDDATA; @@ -242,21 +239,16 @@ static int update_dimensions(VP8Context *s, int width, int height) s->macroblocks_base = av_mallocz((s->mb_stride+s->mb_height*2+2)*sizeof(*s->macroblocks)); s->filter_strength = av_mallocz(s->mb_stride*sizeof(*s->filter_strength)); - s->intra4x4_pred_mode_base = av_mallocz(s->b4_stride*(4*s->mb_height+1)); + s->intra4x4_pred_mode_top = av_mallocz(s->b4_stride*4); s->top_nnz = av_mallocz(s->mb_width*sizeof(*s->top_nnz)); s->top_border = av_mallocz((s->mb_width+1)*sizeof(*s->top_border)); s->segmentation_map = av_mallocz(s->mb_stride*s->mb_height); - if (!s->macroblocks_base || !s->filter_strength || !s->intra4x4_pred_mode_base || + if (!s->macroblocks_base || !s->filter_strength || !s->intra4x4_pred_mode_top || !s->top_nnz || !s->top_border || !s->segmentation_map) return AVERROR(ENOMEM); s->macroblocks = s->macroblocks_base + 1; - s->intra4x4_pred_mode = s->intra4x4_pred_mode_base + 4 + s->b4_stride; - - memset(s->intra4x4_pred_mode_base, DC_PRED, s->b4_stride); - for (i = 0; i < 4*s->mb_height; i++) - s->intra4x4_pred_mode[i*s->b4_stride-1] = DC_PRED; return 0; } @@ -693,31 +685,32 @@ int decode_splitmvs(VP8Context *s, VP56RangeCoder *c, VP8Macroblock *mb) } static av_always_inline -void decode_intra4x4_modes(VP56RangeCoder *c, uint8_t *intra4x4, - int stride, int keyframe) +void decode_intra4x4_modes(VP8Context *s, VP56RangeCoder *c, + int mb_x, int keyframe) { - int x, y, t, l, i; - + uint8_t *intra4x4 = s->intra4x4_pred_mode_mb; if (keyframe) { - const uint8_t *ctx; + int x, y; + uint8_t* const top = s->intra4x4_pred_mode_top + 4 * mb_x; + uint8_t* const left = s->intra4x4_pred_mode_left; for (y = 0; y < 4; y++) { for (x = 0; x < 4; x++) { - t = intra4x4[x - stride]; - l = intra4x4[x - 1]; - ctx = vp8_pred4x4_prob_intra[t][l]; - intra4x4[x] = vp8_rac_get_tree(c, vp8_pred4x4_tree, ctx); + const uint8_t *ctx; + ctx = vp8_pred4x4_prob_intra[top[x]][left[y]]; + *intra4x4 = vp8_rac_get_tree(c, vp8_pred4x4_tree, ctx); + left[y] = top[x] = *intra4x4; + intra4x4++; } - intra4x4 += stride; } } else { + int i; for (i = 0; i < 16; i++) intra4x4[i] = vp8_rac_get_tree(c, vp8_pred4x4_tree, vp8_pred4x4_prob_inter); } } static av_always_inline -void decode_mb_mode(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y, - uint8_t *intra4x4, uint8_t *segment) +void decode_mb_mode(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y, uint8_t *segment) { VP56RangeCoder *c = &s->c; @@ -731,9 +724,12 @@ void decode_mb_mode(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y, mb->mode = vp8_rac_get_tree(c, vp8_pred16x16_tree_intra, vp8_pred16x16_prob_intra); if (mb->mode == MODE_I4x4) { - decode_intra4x4_modes(c, intra4x4, s->b4_stride, 1); - } else - fill_rectangle(intra4x4, 4, 4, s->b4_stride, vp8_pred4x4_mode[mb->mode], 1); + decode_intra4x4_modes(s, c, mb_x, 1); + } else { + const uint32_t modes = vp8_pred4x4_mode[mb->mode] * 0x01010101u; + AV_WN32A(s->intra4x4_pred_mode_top + 4 * mb_x, modes); + AV_WN32A(s->intra4x4_pred_mode_left, modes); + } s->chroma_pred_mode = vp8_rac_get_tree(c, vp8_pred8x8c_tree, vp8_pred8x8c_prob_intra); mb->ref_frame = VP56_FRAME_CURRENT; @@ -786,7 +782,7 @@ void decode_mb_mode(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y, mb->mode = vp8_rac_get_tree(c, vp8_pred16x16_tree_inter, s->prob->pred16x16); if (mb->mode == MODE_I4x4) - decode_intra4x4_modes(c, intra4x4, 4, 0); + decode_intra4x4_modes(s, c, mb_x, 0); s->chroma_pred_mode = vp8_rac_get_tree(c, vp8_pred8x8c_tree, s->prob->pred8x8c); mb->ref_frame = VP56_FRAME_CURRENT; @@ -978,7 +974,7 @@ int check_intra_pred_mode(int mode, int mb_x, int mb_y) static av_always_inline void intra_predict(VP8Context *s, uint8_t *dst[3], VP8Macroblock *mb, - uint8_t *intra4x4, int mb_x, int mb_y) + int mb_x, int mb_y) { int x, y, mode, nnz, tr; @@ -994,7 +990,7 @@ void intra_predict(VP8Context *s, uint8_t *dst[3], VP8Macroblock *mb, s->hpc.pred16x16[mode](dst[0], s->linesize); } else { uint8_t *ptr = dst[0]; - int stride = s->keyframe ? s->b4_stride : 4; + uint8_t *intra4x4 = s->intra4x4_pred_mode_mb; // all blocks on the right edge of the macroblock use bottom edge // the top macroblock for their topright edge @@ -1029,7 +1025,7 @@ void intra_predict(VP8Context *s, uint8_t *dst[3], VP8Macroblock *mb, } ptr += 4*s->linesize; - intra4x4 += stride; + intra4x4 += 4; } } @@ -1516,11 +1512,12 @@ static int vp8_decode_frame(AVCodecContext *avctx, void *data, int *data_size, // top edge of 127 for intra prediction memset(s->top_border, 127, (s->mb_width+1)*sizeof(*s->top_border)); memset(s->ref_count, 0, sizeof(s->ref_count)); + if (s->keyframe) + memset(s->intra4x4_pred_mode_top, DC_PRED, s->b4_stride*4); for (mb_y = 0; mb_y < s->mb_height; mb_y++) { VP56RangeCoder *c = &s->coeff_partition[mb_y & (s->num_coeff_partitions-1)]; VP8Macroblock *mb = s->macroblocks + (s->mb_height - mb_y - 1)*2; - uint8_t *intra4x4 = s->intra4x4_pred_mode + 4*mb_y*s->b4_stride; uint8_t *segment_map = s->segmentation_map + mb_y*s->mb_stride; int mb_xy = mb_y * s->mb_stride; uint8_t *dst[3] = { @@ -1530,6 +1527,7 @@ static int vp8_decode_frame(AVCodecContext *avctx, void *data, int *data_size, }; memset(s->left_nnz, 0, sizeof(s->left_nnz)); + AV_WN32A(s->intra4x4_pred_mode_left, DC_PRED*0x01010101); // left edge of 129 for intra prediction if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) @@ -1540,14 +1538,13 @@ static int vp8_decode_frame(AVCodecContext *avctx, void *data, int *data_size, memset(s->top_border, 129, sizeof(*s->top_border)); for (mb_x = 0; mb_x < s->mb_width; mb_x++, mb_xy++, mb++) { - uint8_t *intra4x4_mb = s->keyframe ? intra4x4 + 4*mb_x : s->intra4x4_pred_mode_mb; uint8_t *segment_mb = segment_map+mb_x; /* Prefetch the current frame, 4 MBs ahead */ s->dsp.prefetch(dst[0] + (mb_x&3)*4*s->linesize + 64, s->linesize, 4); s->dsp.prefetch(dst[1] + (mb_x&7)*s->uvlinesize + 64, dst[2] - dst[1], 2); - decode_mb_mode(s, mb, mb_x, mb_y, intra4x4_mb, segment_mb); + decode_mb_mode(s, mb, mb_x, mb_y, segment_mb); prefetch_motion(s, mb, mb_x, mb_y, mb_xy, VP56_FRAME_PREVIOUS); @@ -1555,7 +1552,7 @@ static int vp8_decode_frame(AVCodecContext *avctx, void *data, int *data_size, decode_mb_coeffs(s, c, mb, s->top_nnz[mb_x], s->left_nnz); if (mb->mode <= MODE_I4x4) - intra_predict(s, dst, mb, intra4x4_mb, mb_x, mb_y); + intra_predict(s, dst, mb, mb_x, mb_y); else inter_predict(s, dst, mb, mb_x, mb_y); |