[FFmpeg-cvslog] ffprobe: add -show_data_hash option.
Nicolas George
git at videolan.org
Sun Aug 17 11:49:10 CEST 2014
ffmpeg | branch: master | Nicolas George <george at nsup.org> | Mon Apr 21 17:49:33 2014 +0200| [4f3e2f107b6315ae4ea74799c2a6314ded3b595d] | committer: Nicolas George
ffprobe: add -show_data_hash option.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4f3e2f107b6315ae4ea74799c2a6314ded3b595d
---
doc/ffprobe.texi | 4 ++++
doc/ffprobe.xsd | 2 ++
ffprobe.c | 39 +++++++++++++++++++++++++++++++++++++++
3 files changed, 45 insertions(+)
diff --git a/doc/ffprobe.texi b/doc/ffprobe.texi
index 8de8956..bf6cc59 100644
--- a/doc/ffprobe.texi
+++ b/doc/ffprobe.texi
@@ -119,6 +119,10 @@ Show payload data, as a hexadecimal and ASCII dump. Coupled with
The dump is printed as the "data" field. It may contain newlines.
+ at item -show_data_hash @var{algorithm}
+Show a hash of payload data, for packets with @option{-show_packets} and for
+codec extradata with @option{-show_streams}.
+
@item -show_error
Show information about the error found when trying to probe the input.
diff --git a/doc/ffprobe.xsd b/doc/ffprobe.xsd
index 2d933c1..32afa62 100644
--- a/doc/ffprobe.xsd
+++ b/doc/ffprobe.xsd
@@ -50,6 +50,7 @@
<xsd:attribute name="pos" type="xsd:long" />
<xsd:attribute name="flags" type="xsd:string" use="required" />
<xsd:attribute name="data" type="xsd:string" />
+ <xsd:attribute name="data_hash" type="xsd:string" />
</xsd:complexType>
<xsd:complexType name="frameType">
@@ -153,6 +154,7 @@
<xsd:attribute name="codec_tag" type="xsd:string" use="required"/>
<xsd:attribute name="codec_tag_string" type="xsd:string" use="required"/>
<xsd:attribute name="extradata" type="xsd:string" />
+ <xsd:attribute name="extradata_hash" type="xsd:string" />
<!-- video attributes -->
<xsd:attribute name="width" type="xsd:int"/>
diff --git a/ffprobe.c b/ffprobe.c
index 01b5eb2..2d48070 100644
--- a/ffprobe.c
+++ b/ffprobe.c
@@ -33,6 +33,7 @@
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/bprint.h"
+#include "libavutil/hash.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/dict.h"
@@ -80,6 +81,7 @@ static int show_private_data = 1;
static char *print_format;
static char *stream_specifier;
+static char *show_data_hash;
typedef struct {
int id; ///< identifier
@@ -187,6 +189,8 @@ static const OptionDef *options;
static const char *input_filename;
static AVInputFormat *iformat = NULL;
+static struct AVHashContext *hash;
+
static const char *const binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
static const char *const decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };
@@ -685,6 +689,21 @@ static void writer_print_data(WriterContext *wctx, const char *name,
av_bprint_finalize(&bp, NULL);
}
+static void writer_print_data_hash(WriterContext *wctx, const char *name,
+ uint8_t *data, int size)
+{
+ char *p, buf[AV_HASH_MAX_SIZE * 2 + 64] = { 0 };
+
+ if (!hash)
+ return;
+ av_hash_init(hash);
+ av_hash_update(hash, data, size);
+ snprintf(buf, sizeof(buf), "%s:", av_hash_get_name(hash));
+ p = buf + strlen(buf);
+ av_hash_final_hex(hash, p, buf + sizeof(buf) - p);
+ writer_print_string(wctx, name, buf, 0);
+}
+
#define MAX_REGISTERED_WRITERS_NB 64
static const Writer *registered_writers[MAX_REGISTERED_WRITERS_NB + 1];
@@ -1692,6 +1711,7 @@ static void show_packet(WriterContext *w, AVFormatContext *fmt_ctx, AVPacket *pk
print_fmt("flags", "%c", pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
if (do_show_data)
writer_print_data(w, "data", pkt->data, pkt->size);
+ writer_print_data_hash(w, "data_hash", pkt->data, pkt->size);
writer_print_section_footer(w);
av_bprint_finalize(&pbuf, NULL);
@@ -2159,6 +2179,8 @@ static int show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_id
if (do_show_data)
writer_print_data(w, "extradata", dec_ctx->extradata,
dec_ctx->extradata_size);
+ writer_print_data_hash(w, "extradata_hash", dec_ctx->extradata,
+ dec_ctx->extradata_size);
/* Print disposition information */
#define PRINT_DISPOSITION(flagname, name) do { \
@@ -2887,6 +2909,7 @@ static const OptionDef real_options[] = {
{ "select_streams", OPT_STRING | HAS_ARG, {(void*)&stream_specifier}, "select the specified streams", "stream_specifier" },
{ "sections", OPT_EXIT, {.func_arg = opt_sections}, "print sections structure and section information, and exit" },
{ "show_data", OPT_BOOL, {(void*)&do_show_data}, "show packets data" },
+ { "show_data_hash", OPT_STRING | HAS_ARG, {(void*)&show_data_hash}, "show packets data hash" },
{ "show_error", 0, {(void*)&opt_show_error}, "show probing error" },
{ "show_format", 0, {(void*)&opt_show_format}, "show format/container info" },
{ "show_frames", 0, {(void*)&opt_show_frames}, "show frames info" },
@@ -2990,6 +3013,21 @@ int main(int argc, char **argv)
w_name = av_strtok(print_format, "=", &buf);
w_args = buf;
+ if (show_data_hash) {
+ if ((ret = av_hash_alloc(&hash, show_data_hash)) < 0) {
+ if (ret == AVERROR(EINVAL)) {
+ const char *n;
+ av_log(NULL, AV_LOG_ERROR,
+ "Unknown hash algorithm '%s'\nKnown algorithms:",
+ show_data_hash);
+ for (i = 0; (n = av_hash_names(i)); i++)
+ av_log(NULL, AV_LOG_ERROR, " %s", n);
+ av_log(NULL, AV_LOG_ERROR, "\n");
+ }
+ goto end;
+ }
+ }
+
w = writer_get_by_name(w_name);
if (!w) {
av_log(NULL, AV_LOG_ERROR, "Unknown output format with name '%s'\n", w_name);
@@ -3029,6 +3067,7 @@ int main(int argc, char **argv)
end:
av_freep(&print_format);
av_freep(&read_intervals);
+ av_hash_freep(&hash);
uninit_opts();
for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
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