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flac : Check compression ratio at end of encode process.

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Stash the compression ratio in the EncoderSession struct and at the
end of the encode process, check if its > 1.0. Print an error message
if it is.
This commit is contained in:
Erik de Castro Lopo 2013-07-21 22:10:24 +10:00
parent f34f31dac0
commit 3418acc1f6
1 changed files with 24 additions and 14 deletions
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38
src/flac/encode.c
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@ -108,6 +108,7 @@ typedef struct {
FILE *fin; FILE *fin;
FLAC__StreamMetadata *seek_table_template; FLAC__StreamMetadata *seek_table_template;
double progress, compression_ratio;
} EncoderSession; } EncoderSession;
const int FLAC_ENCODE__DEFAULT_PADDING = 8192; const int FLAC_ENCODE__DEFAULT_PADDING = 8192;
@ -1651,6 +1652,11 @@ int EncoderSession_finish_ok(EncoderSession *e, int info_align_carry, int info_a
} }
} }
if (e->compression_ratio >= 1.0) {
flac__utils_printf(stderr, 1, "ERROR: Compression failed (ratio %0.3f, should be < 1.0). Please contact the developers.\n", e->compression_ratio);
ret = 1;
}
EncoderSession_destroy(e); EncoderSession_destroy(e);
return ret; return ret;
@ -2418,6 +2424,17 @@ void encoder_progress_callback(const FLAC__StreamEncoder *encoder, FLAC__uint64
{ {
EncoderSession *e = (EncoderSession*)client_data; EncoderSession *e = (EncoderSession*)client_data;
const FLAC__uint64 uesize = e->unencoded_size;
#if defined _MSC_VER || defined __MINGW32__
/* with MSVC you have to spoon feed it the casting */
e->progress = (double)(FLAC__int64)samples_written / (double)(FLAC__int64)e->total_samples_to_encode;
e->compression_ratio = (double)(FLAC__int64)e->bytes_written / ((double)(FLAC__int64)(uesize? uesize:1) * min(1.0, e->progress));
#else
e->progress = (double)samples_written / (double)e->total_samples_to_encode;
e->compression_ratio = (double)e->bytes_written / ((double)(uesize? uesize:1) * min(1.0, e->progress));
#endif
(void)encoder, (void)total_frames_estimate; (void)encoder, (void)total_frames_estimate;
e->bytes_written = bytes_written; e->bytes_written = bytes_written;
@ -2599,26 +2616,19 @@ FLAC__bool parse_cuesheet(FLAC__StreamMetadata **cuesheet, const char *cuesheet_
return true; return true;
} }
void print_stats(const EncoderSession *encoder_session) static void print_stats(const EncoderSession *encoder_session)
{ {
if(flac__utils_verbosity_ >= 2) { if(flac__utils_verbosity_ >= 2) {
const FLAC__uint64 samples_written = min(encoder_session->total_samples_to_encode, encoder_session->samples_written);
const FLAC__uint64 uesize = encoder_session->unencoded_size;
#if defined _MSC_VER || defined __MINGW32__
/* with MSVC you have to spoon feed it the casting */
const double progress = (double)(FLAC__int64)samples_written / (double)(FLAC__int64)encoder_session->total_samples_to_encode;
const double ratio = (double)(FLAC__int64)encoder_session->bytes_written / ((double)(FLAC__int64)(uesize? uesize:1) * min(1.0, progress));
#else
const double progress = (double)samples_written / (double)encoder_session->total_samples_to_encode;
const double ratio = (double)encoder_session->bytes_written / ((double)(uesize? uesize:1) * min(1.0, progress));
#endif
char ratiostr[16]; char ratiostr[16];
FLAC__ASSERT(encoder_session->total_samples_to_encode > 0); FLAC__ASSERT(encoder_session->total_samples_to_encode > 0);
if (uesize) flac_snprintf(ratiostr, sizeof(ratiostr), "%0.3f", ratio); else flac_snprintf(ratiostr, sizeof(ratiostr), "N/A"); if (encoder_session->compression_ratio > 0.0)
flac_snprintf(ratiostr, sizeof(ratiostr), "%0.3f", encoder_session->compression_ratio);
else
flac_snprintf(ratiostr, sizeof(ratiostr), "N/A");
if(samples_written == encoder_session->total_samples_to_encode) { if(encoder_session->samples_written == encoder_session->total_samples_to_encode) {
stats_print_name(2, encoder_session->inbasefilename); stats_print_name(2, encoder_session->inbasefilename);
stats_print_info(2, "%swrote %" PRIu64 " bytes, ratio=%s", stats_print_info(2, "%swrote %" PRIu64 " bytes, ratio=%s",
encoder_session->verify? "Verify OK, " : "", encoder_session->verify? "Verify OK, " : "",
@ -2628,7 +2638,7 @@ void print_stats(const EncoderSession *encoder_session)
} }
else { else {
stats_print_name(2, encoder_session->inbasefilename); stats_print_name(2, encoder_session->inbasefilename);
stats_print_info(2, "%u%% complete, ratio=%s", (unsigned)floor(progress * 100.0 + 0.5), ratiostr); stats_print_info(2, "%u%% complete, ratio=%s", (unsigned)floor(encoder_session->progress * 100.0 + 0.5), ratiostr);
} }
} }
} }