libavcodec/motionpixels.c:101: error: Integer Overflow L2
  ([1, +oo] - 15):unsigned32 by call to `bitstream_read`.

libavcodec/motionpixels.c:101:21: Call
 99.         h      = bitstream_read(bc, bits_len) + 1;
100.         if (read_color)
101.             color = bitstream_read(bc, 15);
                         ^
102.         x = offset % mp->avctx->width;
103.         y = offset / mp->avctx->width;

libavcodec/bitstream.h:183:1: Parameter `n`
  181. 
  182. /* Return n bits from the buffer. n has to be in the 0-32 range. */
  183. static inline uint32_t bitstream_read(BitstreamContext *bc, unsigned n)
       ^
  184. {
  185.     if (!n)

libavcodec/bitstream.h:194:12: Call
  192.     }
  193. 
  194.     return get_val(bc, n);
                  ^
  195. }
  196. 

libavcodec/bitstream.h:130:1: <LHS trace>
128. }
129. 
130. static inline uint64_t get_val(BitstreamContext *bc, unsigned n)
     ^
131. {
132. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:130:1: Parameter `bc->bits_left`
    128. }
    129. 
    130. static inline uint64_t get_val(BitstreamContext *bc, unsigned n)
         ^
    131. {
    132. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:130:1: <RHS trace>
128. }
129. 
130. static inline uint64_t get_val(BitstreamContext *bc, unsigned n)
     ^
131. {
132. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:130:1: Parameter `n`
    128. }
    129. 
    130. static inline uint64_t get_val(BitstreamContext *bc, unsigned n)
         ^
    131. {
    132. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:139:5: Binary operation: ([1, +oo] - 15):unsigned32 by call to `bitstream_read` 
    137.     bc->bits <<= n;
    138. #endif
    139.     bc->bits_left -= n;
             ^
    140. 
    141.     return ret;

static inline uint64_t get_val(BitstreamContext *bc, unsigned n)
{
#ifdef BITSTREAM_READER_LE
    uint64_t ret = bc->bits & ((UINT64_C(1) << n) - 1);
    bc->bits >>= n;
#else
    uint64_t ret = bc->bits >> (64 - n);
    bc->bits <<= n;
#endif
    bc->bits_left -= n;
    return ret;
}
['static void mp_read_changes_map(MotionPixelsContext *mp, BitstreamContext *bc,\n                                int count, int bits_len, int read_color)\n{\n    uint16_t *pixels;\n    int offset, w, h, color = 0, x, y, i;\n    while (count--) {\n        offset = bitstream_read(bc, mp->offset_bits_len);\n        w      = bitstream_read(bc, bits_len) + 1;\n        h      = bitstream_read(bc, bits_len) + 1;\n        if (read_color)\n            color = bitstream_read(bc, 15);\n        x = offset % mp->avctx->width;\n        y = offset / mp->avctx->width;\n        if (y >= mp->avctx->height)\n            continue;\n        w = FFMIN(w, mp->avctx->width  - x);\n        h = FFMIN(h, mp->avctx->height - y);\n        pixels = (uint16_t *)&mp->frame->data[0][y * mp->frame->linesize[0] + x * 2];\n        while (h--) {\n            mp->changes_map[offset] = w;\n            if (read_color)\n                for (i = 0; i < w; ++i)\n                    pixels[i] = color;\n            offset += mp->avctx->width;\n            pixels += mp->frame->linesize[0] / 2;\n        }\n    }\n}', 'static inline uint32_t bitstream_read(BitstreamContext *bc, unsigned n)\n{\n    if (!n)\n        return 0;\n    if (n > bc->bits_left) {\n        refill_32(bc);\n        if (bc->bits_left < 32)\n            bc->bits_left = n;\n    }\n    return get_val(bc, n);\n}', 'static inline uint64_t get_val(BitstreamContext *bc, unsigned n)\n{\n#ifdef BITSTREAM_READER_LE\n    uint64_t ret = bc->bits & ((UINT64_C(1) << n) - 1);\n    bc->bits >>= n;\n#else\n    uint64_t ret = bc->bits >> (64 - n);\n    bc->bits <<= n;\n#endif\n    bc->bits_left -= n;\n    return ret;\n}']