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Implement cmdutils.c:read_file(), and use it in ffmpeg.c for reading

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the second pass encoding log file.

Originally committed as revision 22769 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2010-04-01 22:34:22 +00:00
parent 339f5f3957
commit 458b062d61
3 changed files with 39 additions and 17 deletions
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24
cmdutils.c
View File

@ -639,3 +639,27 @@ int read_yesno(void)
return yesno;
}
int read_file(const char *filename, char **bufptr, size_t *size)
{
FILE *f = fopen(filename, "r");
if (!f) {
fprintf(stderr, "Cannot read file '%s': %s\n", filename, strerror(errno));
return AVERROR(errno);
}
fseek(f, 0, SEEK_END);
*size = ftell(f);
fseek(f, 0, SEEK_SET);
*bufptr = av_malloc(*size + 1);
if (!*bufptr) {
fprintf(stderr, "Could not allocate file buffer\n");
fclose(f);
return AVERROR(ENOMEM);
}
fread(*bufptr, 1, *size, f);
(*bufptr)[*size++] = '\0';
fclose(f);
return 0;
}

11
cmdutils.h
View File

@ -200,4 +200,15 @@ void show_pix_fmts(void);
*/
int read_yesno(void);
/**
* Reads the file with name filename, and puts its content in a newly
* allocated 0-terminated buffer.
*
* @param bufptr puts here the pointer to the newly allocated buffer
* @param size puts here the size of the newly allocated buffer
* @return 0 in case of success, a negative value corresponding to an
* AVERROR error code in case of failure.
*/
int read_file(const char *filename, char **bufptr, size_t *size);
#endif /* FFMPEG_CMDUTILS_H */

21
ffmpeg.c
View File

@ -2072,8 +2072,6 @@ static int av_encode(AVFormatContext **output_files,
(codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
char logfilename[1024];
FILE *f;
int size;
char *logbuffer;
snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
@ -2086,23 +2084,12 @@ static int av_encode(AVFormatContext **output_files,
}
ost->logfile = f;
} else {
/* read the log file */
f = fopen(logfilename, "r");
if (!f) {
fprintf(stderr, "Cannot read log file '%s' for pass-2 encoding: %s\n", logfilename, strerror(errno));
char *logbuffer;
size_t logbuffer_size;
if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
av_exit(1);
}
fseek(f, 0, SEEK_END);
size = ftell(f);
fseek(f, 0, SEEK_SET);
logbuffer = av_malloc(size + 1);
if (!logbuffer) {
fprintf(stderr, "Could not allocate log buffer\n");
av_exit(1);
}
size = fread(logbuffer, 1, size, f);
fclose(f);
logbuffer[size] = '\0';
codec->stats_in = logbuffer;
}
}