shithub: mp3dec

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mp3dec_ex: small mp3dec_detect corrections + coverage test

--- a/minimp3_ex.h

+++ b/minimp3_ex.h

@@ -239,9 +239,9 @@

         filled = io->read(buf, MINIMP3_ID3_DETECT_SIZE, io->read_data);

         if (filled > MINIMP3_ID3_DETECT_SIZE)

             return MP3D_E_IOERROR;

-        if (MINIMP3_ID3_DETECT_SIZE != filled)

-            return MP3D_E_USER;

     }

+    if (filled < MINIMP3_ID3_DETECT_SIZE)

+        return MP3D_E_USER; /* too small, can't be mp3/mpa */

     if (mp3dec_skip_id3v2(buf, filled))

         return 0; /* id3v2 tag is enough evidence */

     if (io)

@@ -259,7 +259,7 @@

             filled = MINIMP3_BUF_SIZE;

     }

     int free_format_bytes, frame_size;

-    mp3d_find_frame(buf, MINIMP3_MIN(filled, (size_t)INT_MAX), &free_format_bytes, &frame_size);

+    mp3d_find_frame(buf, filled, &free_format_bytes, &frame_size);

     if (frame_size)

         return 0; /* MAX_FRAME_SYNC_MATCHES consecutive frames found */

     return MP3D_E_USER;

--- a/minimp3_test.c

+++ b/minimp3_test.c

@@ -452,6 +452,11 @@

 #define ASSERT(c) if (!(c)) { printf("failed, line=%d\n", __LINE__); exit(1); }

     ASSERT(1152 == samples);

+    ret = mp3dec_detect_buf(0, size);

+    ASSERT(MP3D_E_PARAM == ret);

+    ret = mp3dec_detect_buf(buf, (size_t)-1);

+    ASSERT(MP3D_E_PARAM == ret);

+

     ret = mp3dec_load_buf(0, buf, size, &finfo, 0, 0);

     ASSERT(MP3D_E_PARAM == ret);

     ret = mp3dec_load_buf(&mp3d, 0, size, &finfo, 0, 0);

@@ -464,6 +469,11 @@

     memset(&finfo, 0xff, sizeof(finfo));

     ret = mp3dec_load_buf(&mp3d, buf, 0, &finfo, 0, 0);

     ASSERT(0 == ret && 0 == finfo.samples);

+

+    ret = mp3dec_detect_cb(&io, 0, size);

+    ASSERT(MP3D_E_PARAM == ret);

+    ret = mp3dec_detect_cb(&io, buf, (size_t)-1);

+    ASSERT(MP3D_E_PARAM == ret);

     ret = mp3dec_load_cb(0, &io, buf, size, &finfo, 0, 0);

     ASSERT(MP3D_E_PARAM == ret);

--- a/scripts/build.sh

+++ b/scripts/build.sh

@@ -102,6 +102,12 @@

 # Delay and padding usage can be implemented if such software/files exists.

 [[ "$(./minimp3 vectors/l3-nonstandard-vbrtag-noframes.bit)" != "rate=44100 samples=0 max_diff=0 PSNR=99.000000" ]] && echo fail && exit 1 || echo pass

 [[ "$(./minimp3 -m 6 vectors/l3-nonstandard-vbrtag-noframes.bit)" != "rate=44100 samples=0 max_diff=0 PSNR=99.000000" ]] && echo fail && exit 1 || echo pass

+

+[[ "$(./minimp3 -m 9 vectors/l3-sin1k0db.pcm)" != "info: not an mp3/mpa file" ]] && echo fail && exit 1 || echo pass

+[[ "$(./minimp3 -m 9 vectors/l3-nonstandard-small.bit)" != "info: not an mp3/mpa file" ]] && echo fail && exit 1 || echo pass

+[[ "$(./minimp3 -m 11 -e 0 vectors/l3-sin1k0db.bit)" != "error: mp3dec_detect*()=-3 failed" ]] && echo fail && exit 1 || echo pass

+[[ "$(./minimp3 -m 11 -e 1 vectors/l3-sin1k0db.bit)" != "error: mp3dec_detect*()=-3 failed" ]] && echo fail && exit 1 || echo pass

+[[ "$(./minimp3 -m 11 -e 2 vectors/l3-sin1k0db.bit)" != "error: mp3dec_detect*()=-3 failed" ]] && echo fail && exit 1 || echo pass

 set -e

 ./minimp3 -m 6 -s 215 -b vectors/l3-sin1k0db.bit vectors/l3-sin1k0db.pcm