diff options
author | Mike Melanson <mike@multimedia.cx> | 2004-03-08 02:15:13 +0000 |
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committer | Mike Melanson <mike@multimedia.cx> | 2004-03-08 02:15:13 +0000 |
commit | 67335dbce3a905551d43b9eeb49c737278f927c6 (patch) | |
tree | 8a4cf557f90376e7634a51694fbc451d923b10be /libavcodec/vp3.c | |
parent | 44cb64ee89eeb1b28622cf697ff80f65d3bb5959 (diff) | |
download | ffmpeg-67335dbce3a905551d43b9eeb49c737278f927c6.tar.gz |
cut over to using new VP3 DSP functions and remove the old ones; bring
certain source code identifiers in line with official VP3 spec (well,
*my* VP3 spec, anyway)
Originally committed as revision 2856 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/vp3.c')
-rw-r--r-- | libavcodec/vp3.c | 330 |
1 files changed, 16 insertions, 314 deletions
diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index 7dd1bd723b..eadfd39b95 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -1,6 +1,5 @@ /* - * - * Copyright (C) 2003 the ffmpeg project + * Copyright (C) 2003-2004 the ffmpeg project * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -38,7 +37,6 @@ #include "avcodec.h" #include "dsputil.h" #include "mpegvideo.h" -#include "dsputil.h" #include "vp3data.h" @@ -253,7 +251,7 @@ typedef struct Vp3DecodeContext { /* tables */ uint16_t coded_dc_scale_factor[64]; - uint32_t coded_quality_threshold[64]; + uint32_t coded_ac_scale_factor[64]; uint16_t coded_intra_y_dequant[64]; uint16_t coded_intra_c_dequant[64]; uint16_t coded_inter_dequant[64]; @@ -307,307 +305,6 @@ static int theora_decode_comments(AVCodecContext *avctx, GetBitContext gb); static int theora_decode_tables(AVCodecContext *avctx, GetBitContext gb); /************************************************************************ - * VP3 I/DCT - ************************************************************************/ - -#define IdctAdjustBeforeShift 8 -#define xC1S7 64277 -#define xC2S6 60547 -#define xC3S5 54491 -#define xC4S4 46341 -#define xC5S3 36410 -#define xC6S2 25080 -#define xC7S1 12785 - -void vp3_idct_c(int16_t *input_data, int16_t *dequant_matrix, - int16_t *output_data) -{ - int32_t intermediate_data[64]; - int32_t *ip = intermediate_data; - int16_t *op = output_data; - - int32_t A_, B_, C_, D_, _Ad, _Bd, _Cd, _Dd, E_, F_, G_, H_; - int32_t _Ed, _Gd, _Add, _Bdd, _Fd, _Hd; - int32_t t1, t2; - - int i, j; - - debug_idct("raw coefficient block:\n"); - for (i = 0; i < 8; i++) { - for (j = 0; j < 8; j++) { - debug_idct(" %5d", input_data[i * 8 + j]); - } - debug_idct("\n"); - } - debug_idct("\n"); - - for (i = 0; i < 64; i++) { - j = dezigzag_index[i]; - intermediate_data[j] = dequant_matrix[i] * input_data[i]; - } - - debug_idct("dequantized block:\n"); - for (i = 0; i < 8; i++) { - for (j = 0; j < 8; j++) { - debug_idct(" %5d", intermediate_data[i * 8 + j]); - } - debug_idct("\n"); - } - debug_idct("\n"); - - /* Inverse DCT on the rows now */ - for (i = 0; i < 8; i++) { - /* Check for non-zero values */ - if ( ip[0] | ip[1] | ip[2] | ip[3] | ip[4] | ip[5] | ip[6] | ip[7] ) { - t1 = (int32_t)(xC1S7 * ip[1]); - t2 = (int32_t)(xC7S1 * ip[7]); - t1 >>= 16; - t2 >>= 16; - A_ = t1 + t2; - - t1 = (int32_t)(xC7S1 * ip[1]); - t2 = (int32_t)(xC1S7 * ip[7]); - t1 >>= 16; - t2 >>= 16; - B_ = t1 - t2; - - t1 = (int32_t)(xC3S5 * ip[3]); - t2 = (int32_t)(xC5S3 * ip[5]); - t1 >>= 16; - t2 >>= 16; - C_ = t1 + t2; - - t1 = (int32_t)(xC3S5 * ip[5]); - t2 = (int32_t)(xC5S3 * ip[3]); - t1 >>= 16; - t2 >>= 16; - D_ = t1 - t2; - - - t1 = (int32_t)(xC4S4 * (A_ - C_)); - t1 >>= 16; - _Ad = t1; - - t1 = (int32_t)(xC4S4 * (B_ - D_)); - t1 >>= 16; - _Bd = t1; - - - _Cd = A_ + C_; - _Dd = B_ + D_; - - t1 = (int32_t)(xC4S4 * (ip[0] + ip[4])); - t1 >>= 16; - E_ = t1; - - t1 = (int32_t)(xC4S4 * (ip[0] - ip[4])); - t1 >>= 16; - F_ = t1; - - t1 = (int32_t)(xC2S6 * ip[2]); - t2 = (int32_t)(xC6S2 * ip[6]); - t1 >>= 16; - t2 >>= 16; - G_ = t1 + t2; - - t1 = (int32_t)(xC6S2 * ip[2]); - t2 = (int32_t)(xC2S6 * ip[6]); - t1 >>= 16; - t2 >>= 16; - H_ = t1 - t2; - - - _Ed = E_ - G_; - _Gd = E_ + G_; - - _Add = F_ + _Ad; - _Bdd = _Bd - H_; - - _Fd = F_ - _Ad; - _Hd = _Bd + H_; - - /* Final sequence of operations over-write original inputs. */ - ip[0] = (int16_t)((_Gd + _Cd ) >> 0); - ip[7] = (int16_t)((_Gd - _Cd ) >> 0); - - ip[1] = (int16_t)((_Add + _Hd ) >> 0); - ip[2] = (int16_t)((_Add - _Hd ) >> 0); - - ip[3] = (int16_t)((_Ed + _Dd ) >> 0); - ip[4] = (int16_t)((_Ed - _Dd ) >> 0); - - ip[5] = (int16_t)((_Fd + _Bdd ) >> 0); - ip[6] = (int16_t)((_Fd - _Bdd ) >> 0); - - } - - ip += 8; /* next row */ - } - - ip = intermediate_data; - - for ( i = 0; i < 8; i++) { - /* Check for non-zero values (bitwise or faster than ||) */ - if ( ip[0 * 8] | ip[1 * 8] | ip[2 * 8] | ip[3 * 8] | - ip[4 * 8] | ip[5 * 8] | ip[6 * 8] | ip[7 * 8] ) { - - t1 = (int32_t)(xC1S7 * ip[1*8]); - t2 = (int32_t)(xC7S1 * ip[7*8]); - t1 >>= 16; - t2 >>= 16; - A_ = t1 + t2; - - t1 = (int32_t)(xC7S1 * ip[1*8]); - t2 = (int32_t)(xC1S7 * ip[7*8]); - t1 >>= 16; - t2 >>= 16; - B_ = t1 - t2; - - t1 = (int32_t)(xC3S5 * ip[3*8]); - t2 = (int32_t)(xC5S3 * ip[5*8]); - t1 >>= 16; - t2 >>= 16; - C_ = t1 + t2; - - t1 = (int32_t)(xC3S5 * ip[5*8]); - t2 = (int32_t)(xC5S3 * ip[3*8]); - t1 >>= 16; - t2 >>= 16; - D_ = t1 - t2; - - - t1 = (int32_t)(xC4S4 * (A_ - C_)); - t1 >>= 16; - _Ad = t1; - - t1 = (int32_t)(xC4S4 * (B_ - D_)); - t1 >>= 16; - _Bd = t1; - - - _Cd = A_ + C_; - _Dd = B_ + D_; - - t1 = (int32_t)(xC4S4 * (ip[0*8] + ip[4*8])); - t1 >>= 16; - E_ = t1; - - t1 = (int32_t)(xC4S4 * (ip[0*8] - ip[4*8])); - t1 >>= 16; - F_ = t1; - - t1 = (int32_t)(xC2S6 * ip[2*8]); - t2 = (int32_t)(xC6S2 * ip[6*8]); - t1 >>= 16; - t2 >>= 16; - G_ = t1 + t2; - - t1 = (int32_t)(xC6S2 * ip[2*8]); - t2 = (int32_t)(xC2S6 * ip[6*8]); - t1 >>= 16; - t2 >>= 16; - H_ = t1 - t2; - - - _Ed = E_ - G_; - _Gd = E_ + G_; - - _Add = F_ + _Ad; - _Bdd = _Bd - H_; - - _Fd = F_ - _Ad; - _Hd = _Bd + H_; - - _Gd += IdctAdjustBeforeShift; - _Add += IdctAdjustBeforeShift; - _Ed += IdctAdjustBeforeShift; - _Fd += IdctAdjustBeforeShift; - - /* Final sequence of operations over-write original inputs. */ - op[0*8] = (int16_t)((_Gd + _Cd ) >> 4); - op[7*8] = (int16_t)((_Gd - _Cd ) >> 4); - - op[1*8] = (int16_t)((_Add + _Hd ) >> 4); - op[2*8] = (int16_t)((_Add - _Hd ) >> 4); - - op[3*8] = (int16_t)((_Ed + _Dd ) >> 4); - op[4*8] = (int16_t)((_Ed - _Dd ) >> 4); - - op[5*8] = (int16_t)((_Fd + _Bdd ) >> 4); - op[6*8] = (int16_t)((_Fd - _Bdd ) >> 4); - - } else { - - op[0*8] = 0; - op[7*8] = 0; - op[1*8] = 0; - op[2*8] = 0; - op[3*8] = 0; - op[4*8] = 0; - op[5*8] = 0; - op[6*8] = 0; - } - - ip++; /* next column */ - op++; - } -} - -void vp3_idct_put(int16_t *input_data, int16_t *dequant_matrix, - uint8_t *dest, int stride) -{ - int16_t transformed_data[64]; - int16_t *op; - int i, j; - - vp3_idct_c(input_data, dequant_matrix, transformed_data); - - /* place in final output */ - op = transformed_data; - for (i = 0; i < 8; i++) { - for (j = 0; j < 8; j++) { - if (*op < -128) - *dest = 0; - else if (*op > 127) - *dest = 255; - else - *dest = (uint8_t)(*op + 128); - op++; - dest++; - } - dest += (stride - 8); - } -} - -void vp3_idct_add(int16_t *input_data, int16_t *dequant_matrix, - uint8_t *dest, int stride) -{ - int16_t transformed_data[64]; - int16_t *op; - int i, j; - int16_t sample; - - vp3_idct_c(input_data, dequant_matrix, transformed_data); - - /* place in final output */ - op = transformed_data; - for (i = 0; i < 8; i++) { - for (j = 0; j < 8; j++) { - sample = *dest + *op; - if (sample < 0) - *dest = 0; - else if (sample > 255) - *dest = 255; - else - *dest = (uint8_t)(sample & 0xFF); - op++; - dest++; - } - dest += (stride - 8); - } -} - -/************************************************************************ * VP3 specific functions ************************************************************************/ @@ -1145,7 +842,7 @@ s->all_fragments[i].motion_y = 0xbeef; static void init_dequantizer(Vp3DecodeContext *s) { - int quality_scale = s->coded_quality_threshold[s->quality_index]; + int ac_scale_factor = s->coded_ac_scale_factor[s->quality_index]; int dc_scale_factor = s->coded_dc_scale_factor[s->quality_index]; int i, j; @@ -1159,7 +856,7 @@ static void init_dequantizer(Vp3DecodeContext *s) * 100 * * where sf = dc_scale_factor for DC quantizer - * or quality_scale for AC quantizer + * or ac_scale_factor for AC quantizer * * Then, saturate the result to a lower limit of MIN_DEQUANT_VAL. */ @@ -1187,17 +884,17 @@ static void init_dequantizer(Vp3DecodeContext *s) j = zigzag_index[i]; - s->intra_y_dequant[j] = s->coded_intra_y_dequant[i] * quality_scale / 100; + s->intra_y_dequant[j] = s->coded_intra_y_dequant[i] * ac_scale_factor / 100; if (s->intra_y_dequant[j] < MIN_DEQUANT_VAL) s->intra_y_dequant[j] = MIN_DEQUANT_VAL; s->intra_y_dequant[j] *= SCALER; - s->intra_c_dequant[j] = s->coded_intra_c_dequant[i] * quality_scale / 100; + s->intra_c_dequant[j] = s->coded_intra_c_dequant[i] * ac_scale_factor / 100; if (s->intra_c_dequant[j] < MIN_DEQUANT_VAL) s->intra_c_dequant[j] = MIN_DEQUANT_VAL; s->intra_c_dequant[j] *= SCALER; - s->inter_dequant[j] = s->coded_inter_dequant[i] * quality_scale / 100; + s->inter_dequant[j] = s->coded_inter_dequant[i] * ac_scale_factor / 100; if (s->inter_dequant[j] < MIN_DEQUANT_VAL * 2) s->inter_dequant[j] = MIN_DEQUANT_VAL * 2; s->inter_dequant[j] *= SCALER; @@ -2478,11 +2175,15 @@ av_log(s->avctx, AV_LOG_ERROR, " help! got beefy vector! (%X, %X)\n", motion_x, /* invert DCT and place (or add) in final output */ if (s->all_fragments[i].coding_method == MODE_INTRA) { - vp3_idct_put(s->all_fragments[i].coeffs, dequantizer, + s->dsp.vp3_idct_put(s->all_fragments[i].coeffs, + dequantizer, + s->all_fragments[i].coeff_count, output_plane + s->all_fragments[i].first_pixel, stride); } else { - vp3_idct_add(s->all_fragments[i].coeffs, dequantizer, + s->dsp.vp3_idct_add(s->all_fragments[i].coeffs, + dequantizer, + s->all_fragments[i].coeff_count, output_plane + s->all_fragments[i].first_pixel, stride); } @@ -2641,6 +2342,7 @@ static int vp3_decode_init(AVCodecContext *avctx) avctx->pix_fmt = PIX_FMT_YUV420P; avctx->has_b_frames = 0; dsputil_init(&s->dsp, avctx); + s->dsp.vp3_dsp_init(); /* initialize to an impossible value which will force a recalculation * in the first frame decode */ @@ -2700,7 +2402,7 @@ static int vp3_decode_init(AVCodecContext *avctx) for (i = 0; i < 64; i++) s->coded_dc_scale_factor[i] = vp31_dc_scale_factor[i]; for (i = 0; i < 64; i++) - s->coded_quality_threshold[i] = vp31_quality_threshold[i]; + s->coded_ac_scale_factor[i] = vp31_ac_scale_factor[i]; for (i = 0; i < 64; i++) s->coded_intra_y_dequant[i] = vp31_intra_y_dequant[i]; for (i = 0; i < 64; i++) @@ -3041,7 +2743,7 @@ static int theora_decode_tables(AVCodecContext *avctx, GetBitContext gb) /* quality threshold table */ for (i = 0; i < 64; i++) - s->coded_quality_threshold[i] = get_bits(&gb, 16); + s->coded_ac_scale_factor[i] = get_bits(&gb, 16); /* dc scale factor table */ for (i = 0; i < 64; i++) |