avcodec/interplayacm: fix draining and last frame number of samples
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@ -39,6 +39,7 @@ typedef struct InterplayACMContext {
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GetBitContext gb;
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GetBitContext gb;
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uint8_t *bitstream;
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uint8_t *bitstream;
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int max_framesize;
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int max_framesize;
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uint64_t max_samples;
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int bitstream_size;
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int bitstream_size;
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int bitstream_index;
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int bitstream_index;
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@ -83,6 +84,9 @@ static av_cold int decode_init(AVCodecContext *avctx)
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return AVERROR_INVALIDDATA;
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return AVERROR_INVALIDDATA;
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}
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}
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s->max_samples = AV_RL32(avctx->extradata + 4) / avctx->channels;
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if (s->max_samples == 0)
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s->max_samples = UINT64_MAX;
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s->level = AV_RL16(avctx->extradata + 12) & 0xf;
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s->level = AV_RL16(avctx->extradata + 12) & 0xf;
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s->rows = AV_RL16(avctx->extradata + 12) >> 4;
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s->rows = AV_RL16(avctx->extradata + 12) >> 4;
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s->cols = 1 << s->level;
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s->cols = 1 << s->level;
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@ -581,7 +585,8 @@ static int decode_frame(AVCodecContext *avctx, void *data,
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if ((ret = init_get_bits8(gb, buf, buf_size)) < 0)
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if ((ret = init_get_bits8(gb, buf, buf_size)) < 0)
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return ret;
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return ret;
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frame->nb_samples = s->block_len / avctx->channels;
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frame->nb_samples = FFMIN(s->block_len / avctx->channels, s->max_samples);
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s->max_samples -= FFMIN(frame->nb_samples, s->max_samples);
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if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
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if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
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return ret;
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return ret;
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@ -606,9 +611,9 @@ static int decode_frame(AVCodecContext *avctx, void *data,
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return AVERROR_INVALIDDATA;
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return AVERROR_INVALIDDATA;
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}
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}
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if (s->bitstream_size) {
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if (s->bitstream_size > 0) {
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s->bitstream_index += n;
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s->bitstream_index += n;
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s->bitstream_size -= n;
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s->bitstream_size -= FFMIN(s->bitstream_size, n);
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return input_buf_size;
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return input_buf_size;
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}
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}
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return n;
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return n;
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