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ffmpeg: use parse_number_and_die() when it makes sense

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Prefer parse_number_or_die() over atoi()/atol() parsing for the options:
-pass, -top, -vc, and -qscale.

Improve input validation.

Signed-off-by: Stefano Sabatini <stefano.sabatini-lala@poste.it>
This commit is contained in:
Stefano Sabatini 2011-04-11 13:16:07 +02:00
parent 584c2f1db8
commit bdf3d3bf9d
1 changed files with 18 additions and 21 deletions
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39
ffmpeg.c
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@ -2922,19 +2922,20 @@ static int opt_metadata(const char *opt, const char *arg)
return 0;
}
static void opt_qscale(const char *arg)
static int opt_qscale(const char *opt, const char *arg)
{
video_qscale = atof(arg);
if (video_qscale <= 0 ||
video_qscale > 255) {
video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
if (video_qscale <= 0 || video_qscale > 255) {
fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
ffmpeg_exit(1);
return AVERROR(EINVAL);
}
return 0;
}
static void opt_top_field_first(const char *arg)
static int opt_top_field_first(const char *opt, const char *arg)
{
top_field_first= atoi(arg);
top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
return 0;
}
static int opt_thread_count(const char *opt, const char *arg)
@ -2976,9 +2977,10 @@ static int opt_audio_channels(const char *opt, const char *arg)
return 0;
}
static void opt_video_channel(const char *arg)
static int opt_video_channel(const char *opt, const char *arg)
{
video_channel = strtol(arg, NULL, 0);
video_channel = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
return 0;
}
static void opt_video_standard(const char *arg)
@ -3912,15 +3914,10 @@ static void opt_output_file(const char *filename)
}
/* same option as mencoder */
static void opt_pass(const char *pass_str)
static int opt_pass(const char *opt, const char *arg)
{
int pass;
pass = atoi(pass_str);
if (pass != 1 && pass != 2) {
fprintf(stderr, "pass number can be only 1 or 2\n");
ffmpeg_exit(1);
}
do_pass = pass;
do_pass = parse_number_or_die(opt, arg, OPT_INT, 1, 2);
return 0;
}
static int64_t getutime(void)
@ -4340,13 +4337,13 @@ static const OptionDef options[] = {
{ "intra", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&intra_only}, "use only intra frames"},
{ "vn", OPT_BOOL | OPT_VIDEO, {(void*)&video_disable}, "disable video" },
{ "vdt", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&video_discard}, "discard threshold", "n" },
{ "qscale", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_qscale}, "use fixed video quantizer scale (VBR)", "q" },
{ "qscale", HAS_ARG | OPT_FUNC2 | OPT_EXPERT | OPT_VIDEO, {(void*)opt_qscale}, "use fixed video quantizer scale (VBR)", "q" },
{ "rc_override", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_video_rc_override_string}, "rate control override for specific intervals", "override" },
{ "vcodec", HAS_ARG | OPT_VIDEO, {(void*)opt_video_codec}, "force video codec ('copy' to copy stream)", "codec" },
{ "me_threshold", HAS_ARG | OPT_FUNC2 | OPT_EXPERT | OPT_VIDEO, {(void*)opt_me_threshold}, "motion estimaton threshold", "threshold" },
{ "sameq", OPT_BOOL | OPT_VIDEO, {(void*)&same_quality},
"use same quantizer as source (implies VBR)" },
{ "pass", HAS_ARG | OPT_VIDEO, {(void*)&opt_pass}, "select the pass number (1 or 2)", "n" },
{ "pass", HAS_ARG | OPT_FUNC2 | OPT_VIDEO, {(void*)opt_pass}, "select the pass number (1 or 2)", "n" },
{ "passlogfile", HAS_ARG | OPT_STRING | OPT_VIDEO, {(void*)&pass_logfilename_prefix}, "select two pass log file name prefix", "prefix" },
{ "deinterlace", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&do_deinterlace},
"deinterlace pictures" },
@ -4358,7 +4355,7 @@ static const OptionDef options[] = {
#endif
{ "intra_matrix", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_intra_matrix}, "specify intra matrix coeffs", "matrix" },
{ "inter_matrix", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_inter_matrix}, "specify inter matrix coeffs", "matrix" },
{ "top", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_top_field_first}, "top=1/bottom=0/auto=-1 field first", "" },
{ "top", HAS_ARG | OPT_FUNC2 | OPT_EXPERT | OPT_VIDEO, {(void*)opt_top_field_first}, "top=1/bottom=0/auto=-1 field first", "" },
{ "dc", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&intra_dc_precision}, "intra_dc_precision", "precision" },
{ "vtag", OPT_FUNC2 | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_codec_tag}, "force video tag/fourcc", "fourcc/tag" },
{ "newvideo", OPT_VIDEO | OPT_FUNC2, {(void*)opt_new_stream}, "add a new video stream to the current output stream" },
@ -4390,7 +4387,7 @@ static const OptionDef options[] = {
{ "stag", OPT_FUNC2 | HAS_ARG | OPT_EXPERT | OPT_SUBTITLE, {(void*)opt_codec_tag}, "force subtitle tag/fourcc", "fourcc/tag" },
/* grab options */
{ "vc", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, {(void*)opt_video_channel}, "set video grab channel (DV1394 only)", "channel" },
{ "vc", HAS_ARG | OPT_FUNC2 | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, {(void*)opt_video_channel}, "set video grab channel (DV1394 only)", "channel" },
{ "tvstd", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, {(void*)opt_video_standard}, "set television standard (NTSC, PAL (SECAM))", "standard" },
{ "isync", OPT_BOOL | OPT_EXPERT | OPT_GRAB, {(void*)&input_sync}, "sync read on input", "" },