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author | Michael Niedermayer <michaelni@gmx.at> | 2011-12-29 01:40:34 +0100 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2011-12-29 01:40:34 +0100 |
commit | 6071e4d87a9b257c3f7b5912825ede9caa757624 (patch) | |
tree | aeaad3a1d7eb0b27f20a66665740d2a96e99f7c2 /libavcodec/ivi_dsp.c | |
parent | 7e5cbb3c2d96c27d526aa69cbdbd1ab23739d7e5 (diff) | |
parent | 8f5216905f88510c9a74cd91a424902aa989b9a1 (diff) | |
download | ffmpeg-6071e4d87a9b257c3f7b5912825ede9caa757624.tar.gz |
Merge remote-tracking branch 'qatar/master'
* qatar/master:
v410dec: Check for sufficient input data. Fixes crash
fate: Add v210 codec regression tests
mpegts: adjustable minimum PES payload
mpegts: properly output large audio packets
avformat: Add SMJPEG demuxer.
Indeo 4 decoder
Conflicts:
doc/general.texi
libavcodec/v410dec.c
libavcodec/version.h
libavformat/mpegtsenc.c
libavformat/smjpeg.c
libavformat/version.h
tests/codec-regression.sh
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/ivi_dsp.c')
-rw-r--r-- | libavcodec/ivi_dsp.c | 149 |
1 files changed, 148 insertions, 1 deletions
diff --git a/libavcodec/ivi_dsp.c b/libavcodec/ivi_dsp.c index 913fdc31b2..0ee7035741 100644 --- a/libavcodec/ivi_dsp.c +++ b/libavcodec/ivi_dsp.c @@ -1,7 +1,7 @@ /* * DSP functions for Indeo Video Interactive codecs (Indeo4 and Indeo5) * - * Copyright (c) 2009 Maxim Poliakovski + * Copyright (c) 2009-2011 Maxim Poliakovski * * This file is part of FFmpeg. * @@ -178,6 +178,153 @@ void ff_ivi_recompose53(const IVIPlaneDesc *plane, uint8_t *dst, } } +void ff_ivi_recompose_haar(const IVIPlaneDesc *plane, uint8_t *dst, + const int dst_pitch, const int num_bands) +{ + int x, y, indx, b0, b1, b2, b3, p0, p1, p2, p3; + const IDWTELEM *b0_ptr, *b1_ptr, *b2_ptr, *b3_ptr; + int32_t pitch; + + /* all bands should have the same pitch */ + pitch = plane->bands[0].pitch; + + /* get pointers to the wavelet bands */ + b0_ptr = plane->bands[0].buf; + b1_ptr = plane->bands[1].buf; + b2_ptr = plane->bands[2].buf; + b3_ptr = plane->bands[3].buf; + + for (y = 0; y < plane->height; y += 2) { + for (x = 0, indx = 0; x < plane->width; x += 2, indx++) { + /* load coefficients */ + b0 = b0_ptr[indx]; //should be: b0 = (num_bands > 0) ? b0_ptr[indx] : 0; + b1 = b1_ptr[indx]; //should be: b1 = (num_bands > 1) ? b1_ptr[indx] : 0; + b2 = b2_ptr[indx]; //should be: b2 = (num_bands > 2) ? b2_ptr[indx] : 0; + b3 = b3_ptr[indx]; //should be: b3 = (num_bands > 3) ? b3_ptr[indx] : 0; + + /* haar wavelet recomposition */ + p0 = (b0 + b1 + b2 + b3 + 2) >> 2; + p1 = (b0 + b1 - b2 - b3 + 2) >> 2; + p2 = (b0 - b1 + b2 - b3 + 2) >> 2; + p3 = (b0 - b1 - b2 + b3 + 2) >> 2; + + /* bias, convert and output four pixels */ + dst[x] = av_clip_uint8(p0 + 128); + dst[x + 1] = av_clip_uint8(p1 + 128); + dst[dst_pitch + x] = av_clip_uint8(p2 + 128); + dst[dst_pitch + x + 1] = av_clip_uint8(p3 + 128); + }// for x + + dst += dst_pitch << 1; + + b0_ptr += pitch; + b1_ptr += pitch; + b2_ptr += pitch; + b3_ptr += pitch; + }// for y +} + +/** butterfly operation for the inverse Haar transform */ +#define IVI_HAAR_BFLY(s1, s2, o1, o2, t) \ + t = (s1 - s2) >> 1;\ + o1 = (s1 + s2) >> 1;\ + o2 = t;\ + +/** inverse 8-point Haar transform */ +#define INV_HAAR8(s1, s5, s3, s7, s2, s4, s6, s8,\ + d1, d2, d3, d4, d5, d6, d7, d8,\ + t0, t1, t2, t3, t4, t5, t6, t7, t8) {\ + t1 = s1 << 1; t5 = s5 << 1;\ + IVI_HAAR_BFLY(t1, t5, t1, t5, t0); IVI_HAAR_BFLY(t1, s3, t1, t3, t0);\ + IVI_HAAR_BFLY(t5, s7, t5, t7, t0); IVI_HAAR_BFLY(t1, s2, t1, t2, t0);\ + IVI_HAAR_BFLY(t3, s4, t3, t4, t0); IVI_HAAR_BFLY(t5, s6, t5, t6, t0);\ + IVI_HAAR_BFLY(t7, s8, t7, t8, t0);\ + d1 = COMPENSATE(t1);\ + d2 = COMPENSATE(t2);\ + d3 = COMPENSATE(t3);\ + d4 = COMPENSATE(t4);\ + d5 = COMPENSATE(t5);\ + d6 = COMPENSATE(t6);\ + d7 = COMPENSATE(t7);\ + d8 = COMPENSATE(t8); } + +/** inverse 4-point Haar transform */ +#define INV_HAAR4(s1, s3, s5, s7) {\ + HAAR_BFLY(s1, s5); HAAR_BFLY(s1, s3); HAAR_BFLY(s5, s7);\ + s1 = COMPENSATE(s1);\ + s3 = COMPENSATE(s3);\ + s5 = COMPENSATE(s5);\ + s7 = COMPENSATE(s7); } + +void ff_ivi_inverse_haar_8x8(const int32_t *in, int16_t *out, uint32_t pitch, + const uint8_t *flags) +{ + int i, shift, sp1, sp2, sp3, sp4; + const int32_t *src; + int32_t *dst; + int tmp[64]; + int t0, t1, t2, t3, t4, t5, t6, t7, t8; + + /* apply the InvHaar8 to all columns */ +#define COMPENSATE(x) (x) + src = in; + dst = tmp; + for (i = 0; i < 8; i++) { + if (flags[i]) { + /* pre-scaling */ + shift = !(i & 4); + sp1 = src[ 0] << shift; + sp2 = src[ 8] << shift; + sp3 = src[16] << shift; + sp4 = src[24] << shift; + INV_HAAR8( sp1, sp2, sp3, sp4, + src[32], src[40], src[48], src[56], + dst[ 0], dst[ 8], dst[16], dst[24], + dst[32], dst[40], dst[48], dst[56], + t0, t1, t2, t3, t4, t5, t6, t7, t8); + } else + dst[ 0] = dst[ 8] = dst[16] = dst[24] = + dst[32] = dst[40] = dst[48] = dst[56] = 0; + + src++; + dst++; + } +#undef COMPENSATE + + /* apply the InvHaar8 to all rows */ +#define COMPENSATE(x) (x) + src = tmp; + for (i = 0; i < 8; i++) { + if ( !src[0] && !src[1] && !src[2] && !src[3] + && !src[4] && !src[5] && !src[6] && !src[7]) { + memset(out, 0, 8 * sizeof(out[0])); + } else { + INV_HAAR8(src[0], src[1], src[2], src[3], + src[4], src[5], src[6], src[7], + out[0], out[1], out[2], out[3], + out[4], out[5], out[6], out[7], + t0, t1, t2, t3, t4, t5, t6, t7, t8); + } + src += 8; + out += pitch; + } +#undef COMPENSATE +} + +void ff_ivi_dc_haar_2d(const int32_t *in, int16_t *out, uint32_t pitch, + int blk_size) +{ + int x, y; + int16_t dc_coeff; + + dc_coeff = (*in + 0) >> 3; + + for (y = 0; y < blk_size; out += pitch, y++) { + for (x = 0; x < blk_size; x++) + out[x] = dc_coeff; + } +} + /** butterfly operation for the inverse slant transform */ #define IVI_SLANT_BFLY(s1, s2, o1, o2, t) \ t = s1 - s2;\ |