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Lines 174-179
static inline int64_t get_se_coef(GetBitContext *gb, const AVDOVIRpuDataHeader *
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return 0; /* unreachable */ |
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return 0; /* unreachable */ |
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} |
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} |
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static inline unsigned get_variable_bits(GetBitContext *gb, int n) |
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{ |
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unsigned int value = get_bits(gb, n); |
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int read_more = get_bits1(gb); |
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while (read_more) { |
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value = (value + 1) << n; |
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value |= get_bits(gb, n); |
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read_more = get_bits1(gb); |
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} |
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return value; |
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} |
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#define VALIDATE(VAR, MIN, MAX) \ |
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#define VALIDATE(VAR, MIN, MAX) \ |
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do { \ |
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do { \ |
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if (VAR < MIN || VAR > MAX) { \ |
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if (VAR < MIN || VAR > MAX) { \ |
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Lines 200-208
int ff_dovi_rpu_parse(DOVIContext *s, const uint8_t *rpu, size_t rpu_size)
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if ((ret = init_get_bits8(gb, rpu, rpu_size)) < 0) |
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if ((ret = init_get_bits8(gb, rpu, rpu_size)) < 0) |
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return ret; |
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return ret; |
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/* RPU header, common values */ |
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/* Container header */ |
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nal_prefix = get_bits(gb, 8); |
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if (s->dv_profile == 10 /* dav1.10 */) { |
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VALIDATE(nal_prefix, 25, 25); |
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/* DV inside AV1 re-uses an EMDF container skeleton, but with fixed |
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* values - so we can effectively treat this as a magic byte sequence. |
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* |
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* The exact fields are, as follows: |
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* emdf_version : f(2) = 0 |
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* key_id : f(3) = 6 |
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* emdf_payload_id : f(5) = 31 |
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* emdf_payload_id_ext : var(5) = 225 |
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* smploffste : f(1) = 0 |
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* duratione : f(1) = 0 |
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* groupide : f(1) = 0 |
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* codecdatae : f(1) = 0 |
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* discard_unknown_payload : f(1) = 1 |
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*/ |
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const unsigned header_magic = 0x01be6841u; |
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unsigned header, emdf_payload_size; |
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header = get_bits_long(gb, 27); |
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VALIDATE(header, header_magic, header_magic); |
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emdf_payload_size = get_variable_bits(gb, 8); |
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VALIDATE(emdf_payload_size, 6, 512); |
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if (emdf_payload_size * 8 > get_bits_left(gb)) |
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return AVERROR_INVALIDDATA; |
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} else { |
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nal_prefix = get_bits(gb, 8); |
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VALIDATE(nal_prefix, 25, 25); |
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} |
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/* RPU header */ |
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rpu_type = get_bits(gb, 6); |
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rpu_type = get_bits(gb, 6); |
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if (rpu_type != 2) { |
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if (rpu_type != 2) { |
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av_log(s->logctx, AV_LOG_WARNING, "Unrecognized RPU type " |
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av_log(s->logctx, AV_LOG_WARNING, "Unrecognized RPU type " |
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- |
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