diff options
author | Alexandra Hájková <alexandra@khirnov.net> | 2016-04-09 16:59:51 +0300 |
---|---|---|
committer | Anton Khirnov <anton@khirnov.net> | 2016-11-18 12:34:10 +0300 |
commit | 9a23b599431cf24ebf976a30d8c7a070ce57c3e0 (patch) | |
tree | c1e168d990b6882c76f28de462602e2745f53908 /libavcodec/bink.c | |
parent | dae9b0b9c6dbe3349b6350fd02d60810660e7bf6 (diff) |
bink: Convert to the new bitstream reader
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Diffstat (limited to 'libavcodec/bink.c')
-rw-r--r-- | libavcodec/bink.c | 264 |
1 files changed, 128 insertions, 136 deletions
diff --git a/libavcodec/bink.c b/libavcodec/bink.c index 74336974d0..74db80a2be 100644 --- a/libavcodec/bink.c +++ b/libavcodec/bink.c @@ -28,8 +28,8 @@ #include "avcodec.h" #include "binkdata.h" #include "binkdsp.h" +#include "bitstream.h" #include "blockdsp.h" -#include "get_bits.h" #include "hpeldsp.h" #include "internal.h" #include "mathops.h" @@ -93,8 +93,9 @@ typedef struct Tree { uint8_t syms[16]; ///< leaf value to symbol mapping } Tree; -#define GET_HUFF(gb, tree) (tree).syms[get_vlc2(gb, bink_trees[(tree).vlc_num].table,\ - bink_trees[(tree).vlc_num].bits, 1)] +#define GET_HUFF(bc, tree) \ + (tree).syms[bitstream_read_vlc(bc, bink_trees[(tree).vlc_num].table, \ + bink_trees[(tree).vlc_num].bits, 1)] /** * data structure used for decoding single Bink data type @@ -204,18 +205,18 @@ static av_cold void free_bundles(BinkContext *c) /** * Merge two consequent lists of equal size depending on bits read. * - * @param gb context for reading bits + * @param bc context for reading bits * @param dst buffer where merged list will be written to * @param src pointer to the head of the first list (the second lists starts at src+size) * @param size input lists size */ -static void merge(GetBitContext *gb, uint8_t *dst, uint8_t *src, int size) +static void merge(BitstreamContext *bc, uint8_t *dst, uint8_t *src, int size) { uint8_t *src2 = src + size; int size2 = size; do { - if (!get_bits1(gb)) { + if (!bitstream_read_bit(bc)) { *dst++ = *src++; size--; } else { @@ -233,37 +234,37 @@ static void merge(GetBitContext *gb, uint8_t *dst, uint8_t *src, int size) /** * Read information about Huffman tree used to decode data. * - * @param gb context for reading bits + * @param bc context for reading bits * @param tree pointer for storing tree data */ -static void read_tree(GetBitContext *gb, Tree *tree) +static void read_tree(BitstreamContext *bc, Tree *tree) { uint8_t tmp1[16] = { 0 }, tmp2[16], *in = tmp1, *out = tmp2; int i, t, len; - tree->vlc_num = get_bits(gb, 4); + tree->vlc_num = bitstream_read(bc, 4); if (!tree->vlc_num) { for (i = 0; i < 16; i++) tree->syms[i] = i; return; } - if (get_bits1(gb)) { - len = get_bits(gb, 3); + if (bitstream_read_bit(bc)) { + len = bitstream_read(bc, 3); for (i = 0; i <= len; i++) { - tree->syms[i] = get_bits(gb, 4); + tree->syms[i] = bitstream_read(bc, 4); tmp1[tree->syms[i]] = 1; } for (i = 0; i < 16 && len < 16 - 1; i++) if (!tmp1[i]) tree->syms[++len] = i; } else { - len = get_bits(gb, 2); + len = bitstream_read(bc, 2); for (i = 0; i < 16; i++) in[i] = i; for (i = 0; i <= len; i++) { int size = 1 << i; for (t = 0; t < 16; t += size << 1) - merge(gb, out + t, in + t, size); + merge(bc, out + t, in + t, size); FFSWAP(uint8_t*, in, out); } memcpy(tree->syms, in, 16); @@ -273,21 +274,21 @@ static void read_tree(GetBitContext *gb, Tree *tree) /** * Prepare bundle for decoding data. * - * @param gb context for reading bits + * @param bc context for reading bits * @param c decoder context * @param bundle_num number of the bundle to initialize */ -static void read_bundle(GetBitContext *gb, BinkContext *c, int bundle_num) +static void read_bundle(BitstreamContext *bc, BinkContext *c, int bundle_num) { int i; if (bundle_num == BINK_SRC_COLORS) { for (i = 0; i < 16; i++) - read_tree(gb, &c->col_high[i]); + read_tree(bc, &c->col_high[i]); c->col_lastval = 0; } if (bundle_num != BINK_SRC_INTRA_DC && bundle_num != BINK_SRC_INTER_DC) - read_tree(gb, &c->bundle[bundle_num].tree); + read_tree(bc, &c->bundle[bundle_num].tree); c->bundle[bundle_num].cur_dec = c->bundle[bundle_num].cur_ptr = c->bundle[bundle_num].data; } @@ -295,66 +296,64 @@ static void read_bundle(GetBitContext *gb, BinkContext *c, int bundle_num) /** * common check before starting decoding bundle data * - * @param gb context for reading bits + * @param bc context for reading bits * @param b bundle * @param t variable where number of elements to decode will be stored */ -#define CHECK_READ_VAL(gb, b, t) \ +#define CHECK_READ_VAL(bc, b, t) \ if (!b->cur_dec || (b->cur_dec > b->cur_ptr)) \ return 0; \ - t = get_bits(gb, b->len); \ + t = bitstream_read(bc, b->len); \ if (!t) { \ b->cur_dec = NULL; \ return 0; \ } \ -static int read_runs(AVCodecContext *avctx, GetBitContext *gb, Bundle *b) +static int read_runs(AVCodecContext *avctx, BitstreamContext *bc, Bundle *b) { int t, v; const uint8_t *dec_end; - CHECK_READ_VAL(gb, b, t); + CHECK_READ_VAL(bc, b, t); dec_end = b->cur_dec + t; if (dec_end > b->data_end) { av_log(avctx, AV_LOG_ERROR, "Run value went out of bounds\n"); return AVERROR_INVALIDDATA; } - if (get_bits1(gb)) { - v = get_bits(gb, 4); + if (bitstream_read_bit(bc)) { + v = bitstream_read(bc, 4); memset(b->cur_dec, v, t); b->cur_dec += t; } else { while (b->cur_dec < dec_end) - *b->cur_dec++ = GET_HUFF(gb, b->tree); + *b->cur_dec++ = GET_HUFF(bc, b->tree); } return 0; } -static int read_motion_values(AVCodecContext *avctx, GetBitContext *gb, Bundle *b) +static int read_motion_values(AVCodecContext *avctx, BitstreamContext *bc, Bundle *b) { - int t, sign, v; + int t, v; const uint8_t *dec_end; - CHECK_READ_VAL(gb, b, t); + CHECK_READ_VAL(bc, b, t); dec_end = b->cur_dec + t; if (dec_end > b->data_end) { av_log(avctx, AV_LOG_ERROR, "Too many motion values\n"); return AVERROR_INVALIDDATA; } - if (get_bits1(gb)) { - v = get_bits(gb, 4); + if (bitstream_read_bit(bc)) { + v = bitstream_read(bc, 4); if (v) { - sign = -get_bits1(gb); - v = (v ^ sign) - sign; + v = bitstream_apply_sign(bc, v); } memset(b->cur_dec, v, t); b->cur_dec += t; } else { while (b->cur_dec < dec_end) { - v = GET_HUFF(gb, b->tree); + v = GET_HUFF(bc, b->tree); if (v) { - sign = -get_bits1(gb); - v = (v ^ sign) - sign; + v = bitstream_apply_sign(bc, v); } *b->cur_dec++ = v; } @@ -364,25 +363,25 @@ static int read_motion_values(AVCodecContext *avctx, GetBitContext *gb, Bundle * static const uint8_t bink_rlelens[4] = { 4, 8, 12, 32 }; -static int read_block_types(AVCodecContext *avctx, GetBitContext *gb, Bundle *b) +static int read_block_types(AVCodecContext *avctx, BitstreamContext *bc, Bundle *b) { int t, v; int last = 0; const uint8_t *dec_end; - CHECK_READ_VAL(gb, b, t); + CHECK_READ_VAL(bc, b, t); dec_end = b->cur_dec + t; if (dec_end > b->data_end) { av_log(avctx, AV_LOG_ERROR, "Too many block type values\n"); return AVERROR_INVALIDDATA; } - if (get_bits1(gb)) { - v = get_bits(gb, 4); + if (bitstream_read_bit(bc)) { + v = bitstream_read(bc, 4); memset(b->cur_dec, v, t); b->cur_dec += t; } else { while (b->cur_dec < dec_end) { - v = GET_HUFF(gb, b->tree); + v = GET_HUFF(bc, b->tree); if (v < 12) { last = v; *b->cur_dec++ = v; @@ -399,40 +398,40 @@ static int read_block_types(AVCodecContext *avctx, GetBitContext *gb, Bundle *b) return 0; } -static int read_patterns(AVCodecContext *avctx, GetBitContext *gb, Bundle *b) +static int read_patterns(AVCodecContext *avctx, BitstreamContext *bc, Bundle *b) { int t, v; const uint8_t *dec_end; - CHECK_READ_VAL(gb, b, t); + CHECK_READ_VAL(bc, b, t); dec_end = b->cur_dec + t; if (dec_end > b->data_end) { av_log(avctx, AV_LOG_ERROR, "Too many pattern values\n"); return AVERROR_INVALIDDATA; } while (b->cur_dec < dec_end) { - v = GET_HUFF(gb, b->tree); - v |= GET_HUFF(gb, b->tree) << 4; + v = GET_HUFF(bc, b->tree); + v |= GET_HUFF(bc, b->tree) << 4; *b->cur_dec++ = v; } return 0; } -static int read_colors(GetBitContext *gb, Bundle *b, BinkContext *c) +static int read_colors(BitstreamContext *bc, Bundle *b, BinkContext *c) { int t, sign, v; const uint8_t *dec_end; - CHECK_READ_VAL(gb, b, t); + CHECK_READ_VAL(bc, b, t); dec_end = b->cur_dec + t; if (dec_end > b->data_end) { av_log(c->avctx, AV_LOG_ERROR, "Too many color values\n"); return AVERROR_INVALIDDATA; } - if (get_bits1(gb)) { - c->col_lastval = GET_HUFF(gb, c->col_high[c->col_lastval]); - v = GET_HUFF(gb, b->tree); + if (bitstream_read_bit(bc)) { + c->col_lastval = GET_HUFF(bc, c->col_high[c->col_lastval]); + v = GET_HUFF(bc, b->tree); v = (c->col_lastval << 4) | v; if (c->version < 'i') { sign = ((int8_t) v) >> 7; @@ -443,8 +442,8 @@ static int read_colors(GetBitContext *gb, Bundle *b, BinkContext *c) b->cur_dec += t; } else { while (b->cur_dec < dec_end) { - c->col_lastval = GET_HUFF(gb, c->col_high[c->col_lastval]); - v = GET_HUFF(gb, b->tree); + c->col_lastval = GET_HUFF(bc, c->col_high[c->col_lastval]); + v = GET_HUFF(bc, b->tree); v = (c->col_lastval << 4) | v; if (c->version < 'i') { sign = ((int8_t) v) >> 7; @@ -460,18 +459,17 @@ static int read_colors(GetBitContext *gb, Bundle *b, BinkContext *c) /** number of bits used to store first DC value in bundle */ #define DC_START_BITS 11 -static int read_dcs(AVCodecContext *avctx, GetBitContext *gb, Bundle *b, +static int read_dcs(AVCodecContext *avctx, BitstreamContext *bc, Bundle *b, int start_bits, int has_sign) { - int i, j, len, len2, bsize, sign, v, v2; + int i, j, len, len2, bsize, v, v2; int16_t *dst = (int16_t*)b->cur_dec; int16_t *dst_end = (int16_t*)b->data_end; - CHECK_READ_VAL(gb, b, len); - v = get_bits(gb, start_bits - has_sign); + CHECK_READ_VAL(bc, b, len); + v = bitstream_read(bc, start_bits - has_sign); if (v && has_sign) { - sign = -get_bits1(gb); - v = (v ^ sign) - sign; + v = bitstream_apply_sign(bc, v); } if (dst_end - dst < 1) return AVERROR_INVALIDDATA; @@ -481,13 +479,12 @@ static int read_dcs(AVCodecContext *avctx, GetBitContext *gb, Bundle *b, len2 = FFMIN(len - i, 8); if (dst_end - dst < len2) return AVERROR_INVALIDDATA; - bsize = get_bits(gb, 4); + bsize = bitstream_read(bc, 4); if (bsize) { for (j = 0; j < len2; j++) { - v2 = get_bits(gb, bsize); + v2 = bitstream_read(bc, bsize); if (v2) { - sign = -get_bits1(gb); - v2 = (v2 ^ sign) - sign; + v2 = bitstream_apply_sign(bc, v2); } v += v2; *dst++ = v; @@ -539,7 +536,7 @@ static av_cold void binkb_init_bundles(BinkContext *c) binkb_init_bundle(c, i); } -static int binkb_read_bundle(BinkContext *c, GetBitContext *gb, int bundle_num) +static int binkb_read_bundle(BinkContext *c, BitstreamContext *bc, int bundle_num) { const int bits = binkb_bundle_sizes[bundle_num]; const int mask = 1 << (bits - 1); @@ -547,26 +544,26 @@ static int binkb_read_bundle(BinkContext *c, GetBitContext *gb, int bundle_num) Bundle *b = &c->bundle[bundle_num]; int i, len; - CHECK_READ_VAL(gb, b, len); + CHECK_READ_VAL(bc, b, len); if (b->data_end - b->cur_dec < len * (1 + (bits > 8))) return AVERROR_INVALIDDATA; if (bits <= 8) { if (!issigned) { for (i = 0; i < len; i++) - *b->cur_dec++ = get_bits(gb, bits); + *b->cur_dec++ = bitstream_read(bc, bits); } else { for (i = 0; i < len; i++) - *b->cur_dec++ = get_bits(gb, bits) - mask; + *b->cur_dec++ = bitstream_read(bc, bits) - mask; } } else { int16_t *dst = (int16_t*)b->cur_dec; if (!issigned) { for (i = 0; i < len; i++) - *dst++ = get_bits(gb, bits); + *dst++ = bitstream_read(bc, bits); } else { for (i = 0; i < len; i++) - *dst++ = get_bits(gb, bits) - mask; + *dst++ = bitstream_read(bc, bits) - mask; } b->cur_dec = (uint8_t*)dst; } @@ -590,18 +587,19 @@ static inline int binkb_get_value(BinkContext *c, int bundle_num) /** * Read 8x8 block of DCT coefficients. * - * @param gb context for reading bits + * @param bc context for reading bits * @param block place for storing coefficients * @param scan scan order table * @param quant_matrices quantization matrices * @return 0 for success, negative value in other cases */ -static int read_dct_coeffs(GetBitContext *gb, int32_t block[64], const uint8_t *scan, +static int read_dct_coeffs(BitstreamContext *bc, int32_t block[64], + const uint8_t *scan, const int32_t quant_matrices[16][64], int q) { int coef_list[128]; int mode_list[128]; - int i, t, bits, ccoef, mode, sign; + int i, t, bits, ccoef, mode; int list_start = 64, list_end = 64, list_pos; int coef_count = 0; int coef_idx[64]; @@ -615,10 +613,10 @@ static int read_dct_coeffs(GetBitContext *gb, int32_t block[64], const uint8_t * coef_list[list_end] = 2; mode_list[list_end++] = 3; coef_list[list_end] = 3; mode_list[list_end++] = 3; - for (bits = get_bits(gb, 4) - 1; bits >= 0; bits--) { + for (bits = bitstream_read(bc, 4) - 1; bits >= 0; bits--) { list_pos = list_start; while (list_pos < list_end) { - if (!(mode_list[list_pos] | coef_list[list_pos]) || !get_bits1(gb)) { + if (!(mode_list[list_pos] | coef_list[list_pos]) || !bitstream_read_bit(bc)) { list_pos++; continue; } @@ -634,16 +632,15 @@ static int read_dct_coeffs(GetBitContext *gb, int32_t block[64], const uint8_t * mode_list[list_pos++] = 0; } for (i = 0; i < 4; i++, ccoef++) { - if (get_bits1(gb)) { + if (bitstream_read_bit(bc)) { coef_list[--list_start] = ccoef; mode_list[ list_start] = 3; } else { if (!bits) { - t = 1 - (get_bits1(gb) << 1); + t = 1 - (bitstream_read_bit(bc) << 1); } else { - t = get_bits(gb, bits) | 1 << bits; - sign = -get_bits1(gb); - t = (t ^ sign) - sign; + t = bitstream_read(bc, bits) | 1 << bits; + t = bitstream_apply_sign(bc, t); } block[scan[ccoef]] = t; coef_idx[coef_count++] = ccoef; @@ -660,11 +657,10 @@ static int read_dct_coeffs(GetBitContext *gb, int32_t block[64], const uint8_t * break; case 3: if (!bits) { - t = 1 - (get_bits1(gb) << 1); + t = 1 - (bitstream_read_bit(bc) << 1); } else { - t = get_bits(gb, bits) | 1 << bits; - sign = -get_bits1(gb); - t = (t ^ sign) - sign; + t = bitstream_read(bc, bits) | 1 << bits; + t = bitstream_apply_sign(bc, t); } block[scan[ccoef]] = t; coef_idx[coef_count++] = ccoef; @@ -676,7 +672,7 @@ static int read_dct_coeffs(GetBitContext *gb, int32_t block[64], const uint8_t * } if (q == -1) { - quant_idx = get_bits(gb, 4); + quant_idx = bitstream_read(bc, 4); } else { quant_idx = q; } @@ -698,16 +694,16 @@ static int read_dct_coeffs(GetBitContext *gb, int32_t block[64], const uint8_t * /** * Read 8x8 block with residue after motion compensation. * - * @param gb context for reading bits + * @param bc context for reading bits * @param block place to store read data * @param masks_count number of masks to decode * @return 0 on success, negative value in other cases */ -static int read_residue(GetBitContext *gb, int16_t block[64], int masks_count) +static int read_residue(BitstreamContext *bc, int16_t block[64], int masks_count) { int coef_list[128]; int mode_list[128]; - int i, sign, mask, ccoef, mode; + int i, mask, ccoef, mode; int list_start = 64, list_end = 64, list_pos; int nz_coeff[64]; int nz_coeff_count = 0; @@ -717,9 +713,9 @@ static int read_residue(GetBitContext *gb, int16_t block[64], int masks_count) coef_list[list_end] = 44; mode_list[list_end++] = 0; coef_list[list_end] = 0; mode_list[list_end++] = 2; - for (mask = 1 << get_bits(gb, 3); mask; mask >>= 1) { + for (mask = 1 << bitstream_read(bc, 3); mask; mask >>= 1) { for (i = 0; i < nz_coeff_count; i++) { - if (!get_bits1(gb)) + if (!bitstream_read_bit(bc)) continue; if (block[nz_coeff[i]] < 0) block[nz_coeff[i]] -= mask; @@ -731,7 +727,7 @@ static int read_residue(GetBitContext *gb, int16_t block[64], int masks_count) } list_pos = list_start; while (list_pos < list_end) { - if (!(coef_list[list_pos] | mode_list[list_pos]) || !get_bits1(gb)) { + if (!(coef_list[list_pos] | mode_list[list_pos]) || !bitstream_read_bit(bc)) { list_pos++; continue; } @@ -747,13 +743,12 @@ static int read_residue(GetBitContext *gb, int16_t block[64], int masks_count) mode_list[list_pos++] = 0; } for (i = 0; i < 4; i++, ccoef++) { - if (get_bits1(gb)) { + if (bitstream_read_bit(bc)) { coef_list[--list_start] = ccoef; mode_list[ list_start] = 3; } else { nz_coeff[nz_coeff_count++] = bink_scan[ccoef]; - sign = -get_bits1(gb); - block[bink_scan[ccoef]] = (mask ^ sign) - sign; + block[bink_scan[ccoef]] = bitstream_apply_sign(bc, mask); masks_count--; if (masks_count < 0) return 0; @@ -770,8 +765,7 @@ static int read_residue(GetBitContext *gb, int16_t block[64], int masks_count) break; case 3: nz_coeff[nz_coeff_count++] = bink_scan[ccoef]; - sign = -get_bits1(gb); - block[bink_scan[ccoef]] = (mask ^ sign) - sign; + block[bink_scan[ccoef]] = bitstream_apply_sign(bc, mask); coef_list[list_pos] = 0; mode_list[list_pos++] = 0; masks_count--; @@ -798,7 +792,7 @@ static inline void put_pixels8x8_overlapped(uint8_t *dst, uint8_t *src, int stri memcpy(dst + i*stride, tmp + i*8, 8); } -static int binkb_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, +static int binkb_decode_plane(BinkContext *c, AVFrame *frame, BitstreamContext *bc, int plane_idx, int is_key, int is_chroma) { int blk, ret; @@ -826,7 +820,7 @@ static int binkb_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, for (by = 0; by < bh; by++) { for (i = 0; i < BINKB_NB_SRC; i++) { - if ((ret = binkb_read_bundle(c, gb, i)) < 0) + if ((ret = binkb_read_bundle(c, bc, i)) < 0) return ret; } @@ -837,13 +831,11 @@ static int binkb_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, case 0: break; case 1: - scan = bink_patterns[get_bits(gb, 4)]; + scan = bink_patterns[bitstream_read(bc, 4)]; i = 0; do { - int mode, run; - - mode = get_bits1(gb); - run = get_bits(gb, binkb_runbits[i]) + 1; + int mode = bitstream_read_bit(bc); + int run = bitstream_read(bc, binkb_runbits[i]) + 1; i += run; if (i > 64) { @@ -866,7 +858,7 @@ static int binkb_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, memset(dctblock, 0, sizeof(*dctblock) * 64); dctblock[0] = binkb_get_value(c, BINKB_SRC_INTRA_DC); qp = binkb_get_value(c, BINKB_SRC_INTRA_Q); - read_dct_coeffs(gb, dctblock, bink_scan, binkb_intra_quant, qp); + read_dct_coeffs(bc, dctblock, bink_scan, binkb_intra_quant, qp); c->binkdsp.idct_put(dst, stride, dctblock); break; case 3: @@ -882,7 +874,7 @@ static int binkb_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, } c->bdsp.clear_block(block); v = binkb_get_value(c, BINKB_SRC_INTER_COEFS); - read_residue(gb, block, v); + read_residue(bc, block, v); c->binkdsp.add_pixels8(dst, block, stride); break; case 4: @@ -899,7 +891,7 @@ static int binkb_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, memset(dctblock, 0, sizeof(*dctblock) * 64); dctblock[0] = binkb_get_value(c, BINKB_SRC_INTER_DC); qp = binkb_get_value(c, BINKB_SRC_INTER_Q); - read_dct_coeffs(gb, dctblock, bink_scan, binkb_inter_quant, qp); + read_dct_coeffs(bc, dctblock, bink_scan, binkb_inter_quant, qp); c->binkdsp.idct_add(dst, stride, dctblock); break; case 5: @@ -938,8 +930,8 @@ static int binkb_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, } } } - if (get_bits_count(gb) & 0x1F) //next plane data starts at 32-bit boundary - skip_bits_long(gb, 32 - (get_bits_count(gb) & 0x1F)); + if (bitstream_tell(bc) & 0x1F) // next plane data starts at 32-bit boundary + bitstream_skip(bc, 32 - (bitstream_tell(bc) & 0x1F)); return 0; } @@ -962,7 +954,7 @@ static int bink_put_pixels(BinkContext *c, return 0; } -static int bink_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, +static int bink_decode_plane(BinkContext *c, AVFrame *frame, BitstreamContext *bc, int plane_idx, int is_chroma) { int blk, ret; @@ -982,7 +974,7 @@ static int bink_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, init_lengths(c, FFMAX(width, 8), bw); for (i = 0; i < BINK_NB_SRC; i++) - read_bundle(gb, c, i); + read_bundle(bc, c, i); ref_start = c->last->data[plane_idx] ? c->last->data[plane_idx] : frame->data[plane_idx]; @@ -993,23 +985,23 @@ static int bink_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, coordmap[i] = (i & 7) + (i >> 3) * stride; for (by = 0; by < bh; by++) { - if ((ret = read_block_types(c->avctx, gb, &c->bundle[BINK_SRC_BLOCK_TYPES])) < 0) + if ((ret = read_block_types(c->avctx, bc, &c->bundle[BINK_SRC_BLOCK_TYPES])) < 0) return ret; - if ((ret = read_block_types(c->avctx, gb, &c->bundle[BINK_SRC_SUB_BLOCK_TYPES])) < 0) + if ((ret = read_block_types(c->avctx, bc, &c->bundle[BINK_SRC_SUB_BLOCK_TYPES])) < 0) return ret; - if ((ret = read_colors(gb, &c->bundle[BINK_SRC_COLORS], c)) < 0) + if ((ret = read_colors(bc, &c->bundle[BINK_SRC_COLORS], c)) < 0) return ret; - if ((ret = read_patterns(c->avctx, gb, &c->bundle[BINK_SRC_PATTERN])) < 0) + if ((ret = read_patterns(c->avctx, bc, &c->bundle[BINK_SRC_PATTERN])) < 0) return ret; - if ((ret = read_motion_values(c->avctx, gb, &c->bundle[BINK_SRC_X_OFF])) < 0) + if ((ret = read_motion_values(c->avctx, bc, &c->bundle[BINK_SRC_X_OFF])) < 0) return ret; - if ((ret = read_motion_values(c->avctx, gb, &c->bundle[BINK_SRC_Y_OFF])) < 0) + if ((ret = read_motion_values(c->avctx, bc, &c->bundle[BINK_SRC_Y_OFF])) < 0) return ret; - if ((ret = read_dcs(c->avctx, gb, &c->bundle[BINK_SRC_INTRA_DC], DC_START_BITS, 0)) < 0) + if ((ret = read_dcs(c->avctx, bc, &c->bundle[BINK_SRC_INTRA_DC], DC_START_BITS, 0)) < 0) return ret; - if ((ret = read_dcs(c->avctx, gb, &c->bundle[BINK_SRC_INTER_DC], DC_START_BITS, 1)) < 0) + if ((ret = read_dcs(c->avctx, bc, &c->bundle[BINK_SRC_INTER_DC], DC_START_BITS, 1)) < 0) return ret; - if ((ret = read_runs(c->avctx, gb, &c->bundle[BINK_SRC_RUN])) < 0) + if ((ret = read_runs(c->avctx, bc, &c->bundle[BINK_SRC_RUN])) < 0) return ret; if (by == bh) @@ -1034,7 +1026,7 @@ static int bink_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, blk = get_value(c, BINK_SRC_SUB_BLOCK_TYPES); switch (blk) { case RUN_BLOCK: - scan = bink_patterns[get_bits(gb, 4)]; + scan = bink_patterns[bitstream_read(bc, 4)]; i = 0; do { int run = get_value(c, BINK_SRC_RUN) + 1; @@ -1044,7 +1036,7 @@ static int bink_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n"); return AVERROR_INVALIDDATA; } - if (get_bits1(gb)) { + if (bitstream_read_bit(bc)) { v = get_value(c, BINK_SRC_COLORS); for (j = 0; j < run; j++) ublock[*scan++] = v; @@ -1059,7 +1051,7 @@ static int bink_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, case INTRA_BLOCK: memset(dctblock, 0, sizeof(*dctblock) * 64); dctblock[0] = get_value(c, BINK_SRC_INTRA_DC); - read_dct_coeffs(gb, dctblock, bink_scan, bink_intra_quant, -1); + read_dct_coeffs(bc, dctblock, bink_scan, bink_intra_quant, -1); c->binkdsp.idct_put(ublock, 8, dctblock); break; case FILL_BLOCK: @@ -1097,7 +1089,7 @@ static int bink_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, return ret; break; case RUN_BLOCK: - scan = bink_patterns[get_bits(gb, 4)]; + scan = bink_patterns[bitstream_read(bc, 4)]; i = 0; do { int run = get_value(c, BINK_SRC_RUN) + 1; @@ -1107,7 +1099,7 @@ static int bink_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n"); return AVERROR_INVALIDDATA; } - if (get_bits1(gb)) { + if (bitstream_read_bit(bc)) { v = get_value(c, BINK_SRC_COLORS); for (j = 0; j < run; j++) dst[coordmap[*scan++]] = v; @@ -1125,14 +1117,14 @@ static int bink_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, if (ret < 0) return ret; c->bdsp.clear_block(block); - v = get_bits(gb, 7); - read_residue(gb, block, v); + v = bitstream_read(bc, 7); + read_residue(bc, block, v); c->binkdsp.add_pixels8(dst, block, stride); break; case INTRA_BLOCK: memset(dctblock, 0, sizeof(*dctblock) * 64); dctblock[0] = get_value(c, BINK_SRC_INTRA_DC); - read_dct_coeffs(gb, dctblock, bink_scan, bink_intra_quant, -1); + read_dct_coeffs(bc, dctblock, bink_scan, bink_intra_quant, -1); c->binkdsp.idct_put(dst, stride, dctblock); break; case FILL_BLOCK: @@ -1146,7 +1138,7 @@ static int bink_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, return ret; memset(dctblock, 0, sizeof(*dctblock) * 64); dctblock[0] = get_value(c, BINK_SRC_INTER_DC); - read_dct_coeffs(gb, dctblock, bink_scan, bink_inter_quant, -1); + read_dct_coeffs(bc, dctblock, bink_scan, bink_inter_quant, -1); c->binkdsp.idct_add(dst, stride, dctblock); break; case PATTERN_BLOCK: @@ -1169,8 +1161,8 @@ static int bink_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, } } } - if (get_bits_count(gb) & 0x1F) //next plane data starts at 32-bit boundary - skip_bits_long(gb, 32 - (get_bits_count(gb) & 0x1F)); + if (bitstream_tell(bc) & 0x1F) // next plane data starts at 32-bit boundary + bitstream_skip(bc, 32 - (bitstream_tell(bc) & 0x1F)); return 0; } @@ -1179,7 +1171,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac { BinkContext * const c = avctx->priv_data; AVFrame *frame = data; - GetBitContext gb; + BitstreamContext bc; int plane, plane_idx, ret; int bits_count = pkt->size << 3; @@ -1197,28 +1189,28 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac return ret; } - init_get_bits(&gb, pkt->data, bits_count); + bitstream_init(&bc, pkt->data, bits_count); if (c->has_alpha) { if (c->version >= 'i') - skip_bits_long(&gb, 32); - if ((ret = bink_decode_plane(c, frame, &gb, 3, 0)) < 0) + bitstream_skip(&bc, 32); + if ((ret = bink_decode_plane(c, frame, &bc, 3, 0)) < 0) return ret; } if (c->version >= 'i') - skip_bits_long(&gb, 32); + bitstream_skip(&bc, 32); for (plane = 0; plane < 3; plane++) { plane_idx = (!plane || !c->swap_planes) ? plane : (plane ^ 3); if (c->version > 'b') { - if ((ret = bink_decode_plane(c, frame, &gb, plane_idx, !!plane)) < 0) + if ((ret = bink_decode_plane(c, frame, &bc, plane_idx, !!plane)) < 0) return ret; } else { - if ((ret = binkb_decode_plane(c, frame, &gb, plane_idx, + if ((ret = binkb_decode_plane(c, frame, &bc, plane_idx, !avctx->frame_number, !!plane)) < 0) return ret; } - if (get_bits_count(&gb) >= bits_count) + if (bitstream_tell(&bc) >= bits_count) break; } emms_c(); |