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synced 2024-12-23 12:43:46 +02:00
change 2 fields from context to local variables
Originally committed as revision 9823 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -89,8 +89,6 @@ typedef struct {
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int cplinu;
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int chincpl[AC3_MAX_CHANNELS];
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int phsflginu;
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int cplbegf;
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int cplendf;
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int cplcoe;
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uint32_t cplbndstrc;
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int rematstr;
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@ -801,23 +799,25 @@ static int ac3_parse_audio_block(AC3DecodeContext *ctx, int blk)
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ctx->cplinu = get_bits1(gb);
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ctx->cplbndstrc = 0;
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if (ctx->cplinu) { /* coupling in use */
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int cplbegf, cplendf;
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for (i = 0; i < nfchans; i++)
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ctx->chincpl[i] = get_bits1(gb);
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if (acmod == AC3_ACMOD_STEREO)
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ctx->phsflginu = get_bits1(gb); //phase flag in use
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ctx->cplbegf = get_bits(gb, 4);
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ctx->cplendf = get_bits(gb, 4);
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cplbegf = get_bits(gb, 4);
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cplendf = get_bits(gb, 4);
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if (3 + ctx->cplendf - ctx->cplbegf < 0) {
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av_log(NULL, AV_LOG_ERROR, "cplendf = %d < cplbegf = %d\n", ctx->cplendf, ctx->cplbegf);
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if (3 + cplendf - cplbegf < 0) {
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av_log(NULL, AV_LOG_ERROR, "cplendf = %d < cplbegf = %d\n", cplendf, cplbegf);
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return -1;
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}
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ctx->ncplbnd = ctx->ncplsubnd = 3 + ctx->cplendf - ctx->cplbegf;
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ctx->cplstrtmant = ctx->cplbegf * 12 + 37;
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ctx->cplendmant = ctx->cplendf * 12 + 73;
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ctx->ncplbnd = ctx->ncplsubnd = 3 + cplendf - cplbegf;
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ctx->cplstrtmant = cplbegf * 12 + 37;
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ctx->cplendmant = cplendf * 12 + 73;
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for (i = 0; i < ctx->ncplsubnd - 1; i++) /* coupling band structure */
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if (get_bits1(gb)) {
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ctx->cplbndstrc |= 1 << i;
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@ -857,13 +857,13 @@ static int ac3_parse_audio_block(AC3DecodeContext *ctx, int blk)
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if (acmod == AC3_ACMOD_STEREO) {/* rematrixing */
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ctx->rematstr = get_bits1(gb);
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if (ctx->rematstr) {
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if (!(ctx->cplinu) || ctx->cplbegf > 2)
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if (!(ctx->cplinu) || ctx->cplstrtmant > 61)
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for (rbnd = 0; rbnd < 4; rbnd++)
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ctx->rematflg[rbnd] = get_bits1(gb);
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if (ctx->cplbegf > 0 && ctx->cplbegf <= 2 && ctx->cplinu)
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if (ctx->cplstrtmant > 37 && ctx->cplstrtmant <= 61 && ctx->cplinu)
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for (rbnd = 0; rbnd < 3; rbnd++)
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ctx->rematflg[rbnd] = get_bits1(gb);
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if (ctx->cplbegf == 0 && ctx->cplinu)
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if (ctx->cplstrtmant == 37 && ctx->cplinu)
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for (rbnd = 0; rbnd < 2; rbnd++)
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ctx->rematflg[rbnd] = get_bits1(gb);
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}
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