diff options
author | Peter Ross <pross@xvid.org> | 2011-02-11 15:31:32 +0300 |
---|---|---|
committer | Janne Grunau <janne-ffmpeg@jannau.net> | 2011-02-11 15:47:23 +0300 |
commit | e00f41d5742b3a0dc1877b030f4f6f58c19b7bbd (patch) | |
tree | 4c64ae8b8b85e768b0ae00b0e9495553d85a402d /libavcodec/bink.c | |
parent | b0294c80d3a3981ec7ef9e4654962780e8566075 (diff) |
Bink version 'b' video decoder
Based on original patch by Kostya Shishkov
Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
Diffstat (limited to 'libavcodec/bink.c')
-rw-r--r-- | libavcodec/bink.c | 346 |
1 files changed, 328 insertions, 18 deletions
diff --git a/libavcodec/bink.c b/libavcodec/bink.c index 64a10b71e5..b0775284ae 100644 --- a/libavcodec/bink.c +++ b/libavcodec/bink.c @@ -1,6 +1,7 @@ /* * Bink video decoder * Copyright (c) 2009 Konstantin Shishkov + * Copyright (C) 2011 Peter Ross <pross@xvid.org> * * This file is part of FFmpeg. * @@ -34,6 +35,35 @@ static VLC bink_trees[16]; /** + * IDs for different data types used in old version of Bink video codec + */ +enum OldSources { + BINKB_SRC_BLOCK_TYPES = 0, ///< 8x8 block types + BINKB_SRC_COLORS, ///< pixel values used for different block types + BINKB_SRC_PATTERN, ///< 8-bit values for 2-colour pattern fill + BINKB_SRC_X_OFF, ///< X components of motion value + BINKB_SRC_Y_OFF, ///< Y components of motion value + BINKB_SRC_INTRA_DC, ///< DC values for intrablocks with DCT + BINKB_SRC_INTER_DC, ///< DC values for interblocks with DCT + BINKB_SRC_INTRA_Q, ///< quantizer values for intrablocks with DCT + BINKB_SRC_INTER_Q, ///< quantizer values for interblocks with DCT + BINKB_SRC_INTER_COEFS, ///< number of coefficients for residue blocks + + BINKB_NB_SRC +}; + +static const int binkb_bundle_sizes[BINKB_NB_SRC] = { + 4, 8, 8, 5, 5, 11, 11, 4, 4, 7 +}; + +static const int binkb_bundle_signed[BINKB_NB_SRC] = { + 0, 0, 0, 1, 1, 0, 1, 0, 0, 0 +}; + +static uint32_t binkb_intra_quant[16][64]; +static uint32_t binkb_inter_quant[16][64]; + +/** * IDs for different data types used in Bink video codec */ enum Sources { @@ -85,7 +115,7 @@ typedef struct BinkContext { int swap_planes; ScanTable scantable; ///< permutated scantable for DCT coeffs decoding - Bundle bundle[BINK_NB_SRC]; ///< bundles for decoding all data types + Bundle bundle[BINKB_NB_SRC]; ///< bundles for decoding all data types Tree col_high[16]; ///< trees for decoding high nibble in "colours" data type int col_lastval; ///< value of last decoded high nibble in "colours" data type } BinkContext; @@ -145,7 +175,7 @@ static av_cold void init_bundles(BinkContext *c) bh = (c->avctx->height + 7) >> 3; blocks = bw * bh; - for (i = 0; i < BINK_NB_SRC; i++) { + for (i = 0; i < BINKB_NB_SRC; i++) { c->bundle[i].data = av_malloc(blocks * 64); c->bundle[i].data_end = c->bundle[i].data + blocks * 64; } @@ -159,7 +189,7 @@ static av_cold void init_bundles(BinkContext *c) static av_cold void free_bundles(BinkContext *c) { int i; - for (i = 0; i < BINK_NB_SRC; i++) + for (i = 0; i < BINKB_NB_SRC; i++) av_freep(&c->bundle[i].data); } @@ -470,7 +500,7 @@ static int read_dcs(AVCodecContext *avctx, GetBitContext *gb, Bundle *b, */ static inline int get_value(BinkContext *c, int bundle) { - int16_t ret; + int ret; if (bundle < BINK_SRC_X_OFF || bundle == BINK_SRC_RUN) return *c->bundle[bundle].cur_ptr++; @@ -481,17 +511,84 @@ static inline int get_value(BinkContext *c, int bundle) return ret; } +static void binkb_init_bundle(BinkContext *c, int bundle_num) +{ + c->bundle[bundle_num].cur_dec = + c->bundle[bundle_num].cur_ptr = c->bundle[bundle_num].data; + c->bundle[bundle_num].len = 13; +} + +static void binkb_init_bundles(BinkContext *c) +{ + int i; + for (i = 0; i < BINKB_NB_SRC; i++) + binkb_init_bundle(c, i); +} + +static int binkb_read_bundle(BinkContext *c, GetBitContext *gb, int bundle_num) +{ + const int bits = binkb_bundle_sizes[bundle_num]; + const int mask = 1 << (bits - 1); + const int issigned = binkb_bundle_signed[bundle_num]; + Bundle *b = &c->bundle[bundle_num]; + int i, len; + + CHECK_READ_VAL(gb, b, len); + if (bits <= 8) { + if (!issigned) { + for (i = 0; i < len; i++) + *b->cur_dec++ = get_bits(gb, bits); + } else { + for (i = 0; i < len; i++) + *b->cur_dec++ = get_bits(gb, bits) - mask; + } + } else { + int16_t *dst = (int16_t*)b->cur_dec; + + if (!issigned) { + for (i = 0; i < len; i++) + *dst++ = get_bits(gb, bits); + } else { + for (i = 0; i < len; i++) + *dst++ = get_bits(gb, bits) - mask; + } + b->cur_dec = (uint8_t*)dst; + } + return 0; +} + +static inline int binkb_get_value(BinkContext *c, int bundle_num) +{ + int16_t ret; + const int bits = binkb_bundle_sizes[bundle_num]; + + if (bits <= 8) { + int val = *c->bundle[bundle_num].cur_ptr++; + return binkb_bundle_signed[bundle_num] ? (int8_t)val : val; + } + ret = *(int16_t*)c->bundle[bundle_num].cur_ptr; + c->bundle[bundle_num].cur_ptr += 2; + return ret; +} + +typedef const uint32_t quant_matrices[16][64]; +static const quant_matrices * bink_quant_matrices[2][2] = { + { &bink_inter_quant, &bink_intra_quant }, + { &binkb_inter_quant, &binkb_intra_quant }, +}; + /** * Read 8x8 block of DCT coefficients. * * @param gb context for reading bits * @param block place for storing coefficients * @param scan scan order table + * @param is_binkb use version 'b' quantizer matrices * @param is_intra tells what set of quantizer matrices to use * @return 0 for success, negative value in other cases */ static int read_dct_coeffs(GetBitContext *gb, DCTELEM block[64], const uint8_t *scan, - int is_intra) + int is_binkb, int is_intra, int q) { int coef_list[128]; int mode_list[128]; @@ -571,9 +668,14 @@ static int read_dct_coeffs(GetBitContext *gb, DCTELEM block[64], const uint8_t * } } - quant_idx = get_bits(gb, 4); - quant = is_intra ? bink_intra_quant[quant_idx] - : bink_inter_quant[quant_idx]; + if (q == -1) { + quant_idx = get_bits(gb, 4); + } else { + quant_idx = q; + } + + quant = (*bink_quant_matrices[is_binkb][is_intra])[quant_idx]; + block[0] = (block[0] * quant[0]) >> 11; for (i = 0; i < coef_count; i++) { int idx = coef_idx[i]; @@ -673,6 +775,164 @@ static int read_residue(GetBitContext *gb, DCTELEM block[64], int masks_count) return 0; } +/** + * Copy 8x8 block from source to destination, where src and dst may be overlapped + */ +static inline void put_pixels8x8_overlapped(uint8_t *dst, uint8_t *src, int stride) +{ + uint8_t tmp[64]; + int i; + for (i = 0; i < 8; i++) + memcpy(tmp + i*8, src + i*stride, 8); + for (i = 0; i < 8; i++) + memcpy(dst + i*stride, tmp + i*8, 8); +} + +static int binkb_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx, + int is_key, int is_chroma) +{ + int blk; + int i, j, bx, by; + uint8_t *dst, *ref, *ref_start, *ref_end; + int v, col[2]; + const uint8_t *scan; + int xoff, yoff; + DECLARE_ALIGNED(16, DCTELEM, block[64]); + int coordmap[64]; + int ybias = is_key ? -15 : 0; + int qp; + + const int stride = c->pic.linesize[plane_idx]; + int bw = is_chroma ? (c->avctx->width + 15) >> 4 : (c->avctx->width + 7) >> 3; + int bh = is_chroma ? (c->avctx->height + 15) >> 4 : (c->avctx->height + 7) >> 3; + + binkb_init_bundles(c); + ref_start = c->pic.data[plane_idx]; + ref_end = c->pic.data[plane_idx] + (bh * c->pic.linesize[plane_idx] + bw) * 8; + + for (i = 0; i < 64; i++) + coordmap[i] = (i & 7) + (i >> 3) * stride; + + for (by = 0; by < bh; by++) { + for (i = 0; i < BINKB_NB_SRC; i++) { + if (binkb_read_bundle(c, gb, i) < 0) + return -1; + } + + dst = c->pic.data[plane_idx] + 8*by*stride; + for (bx = 0; bx < bw; bx++, dst += 8) { + blk = binkb_get_value(c, BINKB_SRC_BLOCK_TYPES); + switch (blk) { + case 0: + break; + case 1: + scan = bink_patterns[get_bits(gb, 4)]; + i = 0; + do { + int mode, run; + + mode = get_bits1(gb); + run = get_bits(gb, binkb_runbits[i]) + 1; + + i += run; + if (i > 64) { + av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n"); + return -1; + } + if (mode) { + v = binkb_get_value(c, BINKB_SRC_COLORS); + for (j = 0; j < run; j++) + dst[coordmap[*scan++]] = v; + } else { + for (j = 0; j < run; j++) + dst[coordmap[*scan++]] = binkb_get_value(c, BINKB_SRC_COLORS); + } + } while (i < 63); + if (i == 63) + dst[coordmap[*scan++]] = binkb_get_value(c, BINKB_SRC_COLORS); + break; + case 2: + c->dsp.clear_block(block); + block[0] = binkb_get_value(c, BINKB_SRC_INTRA_DC); + qp = binkb_get_value(c, BINKB_SRC_INTRA_Q); + read_dct_coeffs(gb, block, c->scantable.permutated, 1, 1, qp); + c->dsp.idct_put(dst, stride, block); + break; + case 3: + xoff = binkb_get_value(c, BINKB_SRC_X_OFF); + yoff = binkb_get_value(c, BINKB_SRC_Y_OFF) + ybias; + ref = dst + xoff + yoff * stride; + if (ref < ref_start || ref + 8*stride > ref_end) { + av_log(c->avctx, AV_LOG_WARNING, "Reference block is out of bounds\n"); + } else if (ref + 8*stride < dst || ref >= dst + 8*stride) { + c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8); + } else { + put_pixels8x8_overlapped(dst, ref, stride); + } + c->dsp.clear_block(block); + v = binkb_get_value(c, BINKB_SRC_INTER_COEFS); + read_residue(gb, block, v); + c->dsp.add_pixels8(dst, block, stride); + break; + case 4: + xoff = binkb_get_value(c, BINKB_SRC_X_OFF); + yoff = binkb_get_value(c, BINKB_SRC_Y_OFF) + ybias; + ref = dst + xoff + yoff * stride; + if (ref < ref_start || ref + 8 * stride > ref_end) { + av_log(c->avctx, AV_LOG_WARNING, "Reference block is out of bounds\n"); + } else if (ref + 8*stride < dst || ref >= dst + 8*stride) { + c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8); + } else { + put_pixels8x8_overlapped(dst, ref, stride); + } + c->dsp.clear_block(block); + block[0] = binkb_get_value(c, BINKB_SRC_INTER_DC); + qp = binkb_get_value(c, BINKB_SRC_INTER_Q); + read_dct_coeffs(gb, block, c->scantable.permutated, 1, 0, qp); + c->dsp.idct_add(dst, stride, block); + break; + case 5: + v = binkb_get_value(c, BINKB_SRC_COLORS); + c->dsp.fill_block_tab[1](dst, v, stride, 8); + break; + case 6: + for (i = 0; i < 2; i++) + col[i] = binkb_get_value(c, BINKB_SRC_COLORS); + for (i = 0; i < 8; i++) { + v = binkb_get_value(c, BINKB_SRC_PATTERN); + for (j = 0; j < 8; j++, v >>= 1) + dst[i*stride + j] = col[v & 1]; + } + break; + case 7: + xoff = binkb_get_value(c, BINKB_SRC_X_OFF); + yoff = binkb_get_value(c, BINKB_SRC_Y_OFF) + ybias; + ref = dst + xoff + yoff * stride; + if (ref < ref_start || ref + 8 * stride > ref_end) { + av_log(c->avctx, AV_LOG_WARNING, "Reference block is out of bounds\n"); + } else if (ref + 8*stride < dst || ref >= dst + 8*stride) { + c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8); + } else { + put_pixels8x8_overlapped(dst, ref, stride); + } + break; + case 8: + for (i = 0; i < 8; i++) + memcpy(dst + i*stride, c->bundle[BINKB_SRC_COLORS].cur_ptr + i*8, 8); + c->bundle[BINKB_SRC_COLORS].cur_ptr += 64; + break; + default: + av_log(c->avctx, AV_LOG_ERROR, "Unknown block type %d\n", blk); + return -1; + } + } + } + if (get_bits_count(gb) & 0x1F) //next plane data starts at 32-bit boundary + skip_bits_long(gb, 32 - (get_bits_count(gb) & 0x1F)); + + return 0; +} + static int bink_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx, int is_chroma) { @@ -768,7 +1028,7 @@ static int bink_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx, case INTRA_BLOCK: c->dsp.clear_block(block); block[0] = get_value(c, BINK_SRC_INTRA_DC); - read_dct_coeffs(gb, block, c->scantable.permutated, 1); + read_dct_coeffs(gb, block, c->scantable.permutated, 0, 1, -1); c->dsp.idct(block); c->dsp.put_pixels_nonclamped(block, ublock, 8); break; @@ -852,7 +1112,7 @@ static int bink_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx, case INTRA_BLOCK: c->dsp.clear_block(block); block[0] = get_value(c, BINK_SRC_INTRA_DC); - read_dct_coeffs(gb, block, c->scantable.permutated, 1); + read_dct_coeffs(gb, block, c->scantable.permutated, 0, 1, -1); c->dsp.idct_put(dst, stride, block); break; case FILL_BLOCK: @@ -866,7 +1126,7 @@ static int bink_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx, c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8); c->dsp.clear_block(block); block[0] = get_value(c, BINK_SRC_INTER_DC); - read_dct_coeffs(gb, block, c->scantable.permutated, 0); + read_dct_coeffs(gb, block, c->scantable.permutated, 0, 0, -1); c->dsp.idct_add(dst, stride, block); break; case PATTERN_BLOCK: @@ -902,6 +1162,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac int plane, plane_idx; int bits_count = pkt->size << 3; + if (c->version > 'b') { if(c->pic.data[0]) avctx->release_buffer(avctx, &c->pic); @@ -909,6 +1170,12 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); return -1; } + } else { + if(avctx->reget_buffer(avctx, &c->pic) < 0){ + av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n"); + return -1; + } + } init_get_bits(&gb, pkt->data, bits_count); if (c->has_alpha) { @@ -923,8 +1190,13 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac for (plane = 0; plane < 3; plane++) { plane_idx = (!plane || !c->swap_planes) ? plane : (plane ^ 3); - if (bink_decode_plane(c, &gb, plane_idx, !!plane) < 0) - return -1; + if (c->version > 'b') { + if (bink_decode_plane(c, &gb, plane_idx, !!plane) < 0) + return -1; + } else { + if (binkb_decode_plane(c, &gb, plane_idx, !pkt->pts, !!plane) < 0) + return -1; + } if (get_bits_count(&gb) >= bits_count) break; } @@ -933,24 +1205,55 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac *data_size = sizeof(AVFrame); *(AVFrame*)data = c->pic; - FFSWAP(AVFrame, c->pic, c->last); + if (c->version > 'b') + FFSWAP(AVFrame, c->pic, c->last); /* always report that the buffer was completely consumed */ return pkt->size; } +/** + * Caclulate quantization tables for version b + */ +static av_cold void binkb_calc_quant() +{ + float s[64]; + int i, j; + + for (j = 0; j < 8; j++) { + for (i = 0; i < 8; i++) { + if (j && j != 4) + if (i && i != 4) + s[j*8 + i] = cos(j * M_PI/16.0f) * cos(i * M_PI/16.0f) * 2.0f; + else + s[j*8 + i] = cos(j * M_PI/16.0f) * sqrt(2.0f); + else + if (i && i != 4) + s[j*8 + i] = cos(i * M_PI/16.0f) * sqrt(2.0f); + else + s[j*8 + i] = 1.0f; + } + } + + for (j = 0; j < 16; j++) { + for (i = 0; i < 64; i++) { + binkb_intra_quant[j][i] = (1L << 12) * binkb_intra_seed[i] * s[i] * + binkb_num[j]/(float)binkb_den[j]; + binkb_inter_quant[j][i] = (1L << 12) * binkb_inter_seed[i] * s[i] * + binkb_num[j]/(float)binkb_den[j]; + } + } +} + static av_cold int decode_init(AVCodecContext *avctx) { BinkContext * const c = avctx->priv_data; static VLC_TYPE table[16 * 128][2]; + static int binkb_initialised = 0; int i; int flags; c->version = avctx->codec_tag >> 24; - if (c->version < 'c') { - av_log(avctx, AV_LOG_ERROR, "Too old version '%c'\n", c->version); - return -1; - } if (avctx->extradata_size < 4) { av_log(avctx, AV_LOG_ERROR, "Extradata missing or too short\n"); return -1; @@ -984,6 +1287,13 @@ static av_cold int decode_init(AVCodecContext *avctx) init_bundles(c); + if (c->version == 'b') { + if (!binkb_initialised) { + binkb_calc_quant(); + binkb_initialised = 1; + } + } + return 0; } |