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synced 2025-07-03 23:05:58 +08:00
Cosmetics: rename vars s/ctx/chd/
Originally committed as revision 15256 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
@ -162,7 +162,7 @@ static inline int16_t mace_broken_clip_int16(int n)
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return n;
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return n;
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}
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}
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static void chomp3(ChannelData *ctx, int16_t *output, uint8_t val,
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static void chomp3(ChannelData *chd, int16_t *output, uint8_t val,
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const uint16_t tab1[],
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const uint16_t tab1[],
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const int16_t *tab2, int tab2_stride,
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const int16_t *tab2, int tab2_stride,
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uint32_t numChannels)
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uint32_t numChannels)
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@ -170,19 +170,19 @@ static void chomp3(ChannelData *ctx, int16_t *output, uint8_t val,
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int16_t current;
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int16_t current;
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if (val < tab2_stride)
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if (val < tab2_stride)
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current = tab2[((ctx->index & 0x7f0) >> 4)*tab2_stride + val];
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current = tab2[((chd->index & 0x7f0) >> 4)*tab2_stride + val];
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else
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else
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current = - 1 - tab2[((ctx->index & 0x7f0) >> 4)*tab2_stride + 2*tab2_stride-val-1];
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current = - 1 - tab2[((chd->index & 0x7f0) >> 4)*tab2_stride + 2*tab2_stride-val-1];
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current = mace_broken_clip_int16(current + ctx->lev);
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current = mace_broken_clip_int16(current + chd->lev);
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ctx->lev = current - (current >> 3);
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chd->lev = current - (current >> 3);
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*output = QT_8S_2_16S(current);
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*output = QT_8S_2_16S(current);
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if (( ctx->index += tab1[val]-(ctx->index >> 5) ) < 0)
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if (( chd->index += tab1[val]-(chd->index >> 5) ) < 0)
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ctx->index = 0;
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chd->index = 0;
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}
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}
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static void chomp6(ChannelData *ctx, int16_t *output, uint8_t val,
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static void chomp6(ChannelData *chd, int16_t *output, uint8_t val,
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const uint16_t tab1[],
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const uint16_t tab1[],
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const int16_t *tab2, int tab2_stride,
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const int16_t *tab2, int tab2_stride,
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uint32_t numChannels)
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uint32_t numChannels)
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@ -190,33 +190,33 @@ static void chomp6(ChannelData *ctx, int16_t *output, uint8_t val,
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int16_t current;
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int16_t current;
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if (val < tab2_stride)
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if (val < tab2_stride)
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current = tab2[((ctx->index & 0x7f0) >> 4)*tab2_stride + val];
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current = tab2[((chd->index & 0x7f0) >> 4)*tab2_stride + val];
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else
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else
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current = - 1 - tab2[((ctx->index & 0x7f0) >> 4)*tab2_stride + 2*tab2_stride-val-1];
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current = - 1 - tab2[((chd->index & 0x7f0) >> 4)*tab2_stride + 2*tab2_stride-val-1];
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if ((ctx->previous ^ current) >= 0) {
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if ((chd->previous ^ current) >= 0) {
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ctx->factor = FFMIN(ctx->factor + 506, 32767);
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chd->factor = FFMIN(chd->factor + 506, 32767);
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} else {
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} else {
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if (ctx->factor - 314 < -32768)
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if (chd->factor - 314 < -32768)
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ctx->factor = -32767;
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chd->factor = -32767;
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else
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else
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ctx->factor -= 314;
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chd->factor -= 314;
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}
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}
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current = mace_broken_clip_int16(current + ctx->level);
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current = mace_broken_clip_int16(current + chd->level);
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ctx->level = ((current*ctx->factor) >> 15);
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chd->level = ((current*chd->factor) >> 15);
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current >>= 1;
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current >>= 1;
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output[0] = QT_8S_2_16S(ctx->previous + ctx->prev2 -
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output[0] = QT_8S_2_16S(chd->previous + chd->prev2 -
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((ctx->prev2-current) >> 2));
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((chd->prev2-current) >> 2));
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output[numChannels] = QT_8S_2_16S(ctx->previous + current +
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output[numChannels] = QT_8S_2_16S(chd->previous + current +
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((ctx->prev2-current) >> 2));
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((chd->prev2-current) >> 2));
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ctx->prev2 = ctx->previous;
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chd->prev2 = chd->previous;
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ctx->previous = current;
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chd->previous = current;
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if ((ctx->index += tab1[val] - (ctx->index >> 5)) < 0)
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if ((chd->index += tab1[val] - (chd->index >> 5)) < 0)
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ctx->index = 0;
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chd->index = 0;
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}
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}
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static av_cold int mace_decode_init(AVCodecContext * avctx)
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static av_cold int mace_decode_init(AVCodecContext * avctx)
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