X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=avprobe.c;h=2f15d5ce2a8e539f019a9bb8240b9dade8fc5d90;hb=ae35d91d44c5e676af3d146bf8d05b241c467675;hp=f3bb437b1ea77661c25f648a5594b7f1372ad666;hpb=3a8c95f730732b9f1ffacdbfbf79a01b202a67af;p=ffmpeg

diff --git a/avprobe.c b/avprobe.c
index f3bb437b1ea..2f15d5ce2a8 100644
--- a/avprobe.c
+++ b/avprobe.c
@@ -23,9 +23,11 @@
 
 #include "libavformat/avformat.h"
 #include "libavcodec/avcodec.h"
+#include "libavutil/avstring.h"
 #include "libavutil/opt.h"
 #include "libavutil/pixdesc.h"
 #include "libavutil/dict.h"
+#include "libavutil/libm.h"
 #include "libavdevice/avdevice.h"
 #include "cmdutils.h"
 
@@ -44,7 +46,7 @@ static int use_byte_value_binary_prefix = 0;
 static int use_value_sexagesimal_format = 0;
 
 /* globals */
-static const OptionDef options[];
+static const OptionDef *options;
 
 /* AVprobe context */
 static const char *input_filename;
@@ -58,10 +60,9 @@ static const char unit_hertz_str[]          = "Hz"   ;
 static const char unit_byte_str[]           = "byte" ;
 static const char unit_bit_per_second_str[] = "bit/s";
 
-void exit_program(int ret)
+static void exit_program(void)
 {
     av_dict_free(&fmt_entries_to_show);
-    exit(ret);
 }
 
 /*
@@ -93,10 +94,21 @@ typedef struct {
 typedef struct {
     ProbeElement *prefix;
     int level;
+    void (*print_header)(void);
+    void (*print_footer)(void);
+
+    void (*print_array_header) (const char *name);
+    void (*print_array_footer) (const char *name);
+    void (*print_object_header)(const char *name);
+    void (*print_object_footer)(const char *name);
+
+    void (*print_integer) (const char *key, int64_t value);
+    void (*print_string)  (const char *key, const char *value);
 } OutputContext;
 
 static AVIOContext *probe_out = NULL;
 static OutputContext octx;
+#define AVP_INDENT() avio_printf(probe_out, "%*c", octx.level * 2, ' ')
 
 /*
  * Default format, INI
@@ -189,6 +201,140 @@ static void ini_print_string(const char *key, const char *value)
     avio_w8(probe_out, '\n');
 }
 
+/*
+ * Alternate format, JSON
+ */
+
+static void json_print_header(void)
+{
+    avio_printf(probe_out, "{");
+}
+static void json_print_footer(void)
+{
+    avio_printf(probe_out, "}\n");
+}
+
+static void json_print_array_header(const char *name)
+{
+    if (octx.prefix[octx.level -1].nb_elems)
+        avio_printf(probe_out, ",\n");
+    AVP_INDENT();
+    avio_printf(probe_out, "\"%s\" : ", name);
+    avio_printf(probe_out, "[\n");
+}
+
+static void json_print_array_footer(const char *name)
+{
+    avio_printf(probe_out, "\n");
+    AVP_INDENT();
+    avio_printf(probe_out, "]");
+}
+
+static void json_print_object_header(const char *name)
+{
+    if (octx.prefix[octx.level -1].nb_elems)
+        avio_printf(probe_out, ",\n");
+    AVP_INDENT();
+    if (octx.prefix[octx.level -1].type == OBJECT)
+        avio_printf(probe_out, "\"%s\" : ", name);
+    avio_printf(probe_out, "{\n");
+}
+
+static void json_print_object_footer(const char *name)
+{
+    avio_printf(probe_out, "\n");
+    AVP_INDENT();
+    avio_printf(probe_out, "}");
+}
+
+static void json_print_integer(const char *key, int64_t value)
+{
+    if (octx.prefix[octx.level -1].nb_elems)
+        avio_printf(probe_out, ",\n");
+    AVP_INDENT();
+    avio_printf(probe_out, "\"%s\" : %"PRId64"", key, value);
+}
+
+static void json_escape_print(const char *s)
+{
+    int i = 0;
+    char c = 0;
+
+    while (c = s[i++]) {
+        switch (c) {
+        case '\r': avio_printf(probe_out, "%s", "\\r"); break;
+        case '\n': avio_printf(probe_out, "%s", "\\n"); break;
+        case '\f': avio_printf(probe_out, "%s", "\\f"); break;
+        case '\b': avio_printf(probe_out, "%s", "\\b"); break;
+        case '\t': avio_printf(probe_out, "%s", "\\t"); break;
+        case '\\':
+        case '"' : avio_w8(probe_out, '\\');
+        default:
+            if ((unsigned char)c < 32)
+                avio_printf(probe_out, "\\u00%02x", c & 0xff);
+            else
+                avio_w8(probe_out, c);
+        break;
+        }
+    }
+}
+
+static void json_print_string(const char *key, const char *value)
+{
+    if (octx.prefix[octx.level -1].nb_elems)
+        avio_printf(probe_out, ",\n");
+    AVP_INDENT();
+    avio_w8(probe_out, '\"');
+    json_escape_print(key);
+    avio_printf(probe_out, "\" : \"");
+    json_escape_print(value);
+    avio_w8(probe_out, '\"');
+}
+
+/*
+ * old-style pseudo-INI
+ */
+static void old_print_object_header(const char *name)
+{
+    char *str, *p;
+
+    if (!strcmp(name, "tags"))
+        return;
+
+    str = p = av_strdup(name);
+    while (*p) {
+        *p = av_toupper(*p);
+        p++;
+    }
+
+    avio_printf(probe_out, "[%s]\n", str);
+    av_freep(&str);
+}
+
+static void old_print_object_footer(const char *name)
+{
+    char *str, *p;
+
+    if (!strcmp(name, "tags"))
+        return;
+
+    str = p = av_strdup(name);
+    while (*p) {
+        *p = av_toupper(*p);
+        p++;
+    }
+
+    avio_printf(probe_out, "[/%s]\n", str);
+    av_freep(&str);
+}
+
+static void old_print_string(const char *key, const char *value)
+{
+    if (!strcmp(octx.prefix[octx.level - 1].name, "tags"))
+        avio_printf(probe_out, "TAG:");
+    ini_print_string(key, value);
+}
+
 /*
  * Simple Formatter for single entries.
  */
@@ -211,19 +357,6 @@ static void show_format_entry_string(const char *key, const char *value)
     }
 }
 
-
-void (*print_header)(void) = ini_print_header;
-void (*print_footer)(void) = ini_print_footer;
-
-void (*print_array_header) (const char *name) = ini_print_array_header;
-void (*print_array_footer) (const char *name);
-void (*print_object_header)(const char *name) = ini_print_object_header;
-void (*print_object_footer)(const char *name);
-
-void (*print_integer) (const char *key, int64_t value)     = ini_print_integer;
-void (*print_string)  (const char *key, const char *value) = ini_print_string;
-
-
 static void probe_group_enter(const char *name, int type)
 {
     int64_t count = -1;
@@ -253,23 +386,23 @@ static void probe_group_leave(void)
 
 static void probe_header(void)
 {
-    if (print_header)
-        print_header();
+    if (octx.print_header)
+        octx.print_header();
     probe_group_enter("root", OBJECT);
 }
 
 static void probe_footer(void)
 {
-    if (print_footer)
-        print_footer();
+    if (octx.print_footer)
+        octx.print_footer();
     probe_group_leave();
 }
 
 
 static void probe_array_header(const char *name)
 {
-    if (print_array_header)
-        print_array_header(name);
+    if (octx.print_array_header)
+        octx.print_array_header(name);
 
     probe_group_enter(name, ARRAY);
 }
@@ -277,14 +410,14 @@ static void probe_array_header(const char *name)
 static void probe_array_footer(const char *name)
 {
     probe_group_leave();
-    if (print_array_footer)
-        print_array_footer(name);
+    if (octx.print_array_footer)
+        octx.print_array_footer(name);
 }
 
 static void probe_object_header(const char *name)
 {
-    if (print_object_header)
-        print_object_header(name);
+    if (octx.print_object_header)
+        octx.print_object_header(name);
 
     probe_group_enter(name, OBJECT);
 }
@@ -292,19 +425,19 @@ static void probe_object_header(const char *name)
 static void probe_object_footer(const char *name)
 {
     probe_group_leave();
-    if (print_object_footer)
-        print_object_footer(name);
+    if (octx.print_object_footer)
+        octx.print_object_footer(name);
 }
 
 static void probe_int(const char *key, int64_t value)
 {
-    print_integer(key, value);
+    octx.print_integer(key, value);
     octx.prefix[octx.level -1].nb_elems++;
 }
 
 static void probe_str(const char *key, const char *value)
 {
-    print_string(key, value);
+    octx.print_string(key, value);
     octx.prefix[octx.level -1].nb_elems++;
 }
 
@@ -336,7 +469,7 @@ static char *value_string(char *buf, int buf_size, double val, const char *unit)
         int index;
 
         if (unit == unit_byte_str && use_byte_value_binary_prefix) {
-            index = (int) (log(val)/log(2)) / 10;
+            index = (int) log2(val) / 10;
             index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) - 1);
             val  /= pow(2, index * 10);
             prefix_string = binary_unit_prefixes[index];
@@ -448,9 +581,11 @@ static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
 {
     AVStream *stream = fmt_ctx->streams[stream_idx];
     AVCodecContext *dec_ctx;
-    AVCodec *dec;
+    const AVCodec *dec;
+    const char *profile;
     char val_str[128];
-    AVRational display_aspect_ratio;
+    AVRational display_aspect_ratio, *sar = NULL;
+    const AVPixFmtDescriptor *desc;
 
     probe_object_header("stream");
 
@@ -475,26 +610,32 @@ static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
         probe_str("codec_tag", tag_string(val_str, sizeof(val_str),
                                           dec_ctx->codec_tag));
 
+        /* print profile, if there is one */
+        if (dec && (profile = av_get_profile_name(dec, dec_ctx->profile)))
+            probe_str("profile", profile);
+
         switch (dec_ctx->codec_type) {
         case AVMEDIA_TYPE_VIDEO:
             probe_int("width", dec_ctx->width);
             probe_int("height", dec_ctx->height);
             probe_int("has_b_frames", dec_ctx->has_b_frames);
-            if (dec_ctx->sample_aspect_ratio.num) {
+            if (dec_ctx->sample_aspect_ratio.num)
+                sar = &dec_ctx->sample_aspect_ratio;
+            else if (stream->sample_aspect_ratio.num)
+                sar = &stream->sample_aspect_ratio;
+
+            if (sar) {
                 probe_str("sample_aspect_ratio",
-                          rational_string(val_str, sizeof(val_str), ":",
-                          &dec_ctx->sample_aspect_ratio));
+                          rational_string(val_str, sizeof(val_str), ":", sar));
                 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
-                          dec_ctx->width  * dec_ctx->sample_aspect_ratio.num,
-                          dec_ctx->height * dec_ctx->sample_aspect_ratio.den,
+                          dec_ctx->width  * sar->num, dec_ctx->height * sar->den,
                           1024*1024);
                 probe_str("display_aspect_ratio",
                           rational_string(val_str, sizeof(val_str), ":",
                           &display_aspect_ratio));
             }
-            probe_str("pix_fmt",
-                      dec_ctx->pix_fmt != PIX_FMT_NONE ? av_pix_fmt_descriptors[dec_ctx->pix_fmt].name
-                                                    : "unknown");
+            desc = av_pix_fmt_desc_get(dec_ctx->pix_fmt);
+            probe_str("pix_fmt", desc ? desc->name : "unknown");
             probe_int("level", dec_ctx->level);
             break;
 
@@ -514,12 +655,13 @@ static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
 
     if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
         probe_int("id", stream->id);
-    probe_str("r_frame_rate",
-              rational_string(val_str, sizeof(val_str), "/",
-              &stream->r_frame_rate));
     probe_str("avg_frame_rate",
               rational_string(val_str, sizeof(val_str), "/",
               &stream->avg_frame_rate));
+    if (dec_ctx->bit_rate)
+        probe_str("bit_rate",
+                  value_string(val_str, sizeof(val_str),
+                               dec_ctx->bit_rate, unit_bit_per_second_str));
     probe_str("time_base",
               rational_string(val_str, sizeof(val_str), "/",
               &stream->time_base));
@@ -596,7 +738,10 @@ static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
         AVStream *stream = fmt_ctx->streams[i];
         AVCodec *codec;
 
-        if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
+        if (stream->codec->codec_id == AV_CODEC_ID_PROBE) {
+            fprintf(stderr, "Failed to probe codec for input stream %d\n",
+                    stream->index);
+        } else if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
             fprintf(stderr,
                     "Unsupported codec with id %d for input stream %d\n",
                     stream->codec->codec_id, stream->index);
@@ -656,7 +801,7 @@ static void show_usage(void)
     printf("\n");
 }
 
-static int opt_format(const char *opt, const char *arg)
+static int opt_format(void *optctx, const char *opt, const char *arg)
 {
     iformat = av_find_input_format(arg);
     if (!iformat) {
@@ -666,19 +811,53 @@ static int opt_format(const char *opt, const char *arg)
     return 0;
 }
 
-static int opt_show_format_entry(const char *opt, const char *arg)
+static int opt_output_format(void *optctx, const char *opt, const char *arg)
+{
+
+    if (!strcmp(arg, "json")) {
+        octx.print_header        = json_print_header;
+        octx.print_footer        = json_print_footer;
+        octx.print_array_header  = json_print_array_header;
+        octx.print_array_footer  = json_print_array_footer;
+        octx.print_object_header = json_print_object_header;
+        octx.print_object_footer = json_print_object_footer;
+
+        octx.print_integer = json_print_integer;
+        octx.print_string  = json_print_string;
+    } else if (!strcmp(arg, "ini")) {
+        octx.print_header        = ini_print_header;
+        octx.print_footer        = ini_print_footer;
+        octx.print_array_header  = ini_print_array_header;
+        octx.print_object_header = ini_print_object_header;
+
+        octx.print_integer = ini_print_integer;
+        octx.print_string  = ini_print_string;
+    } else if (!strcmp(arg, "old")) {
+        octx.print_header        = NULL;
+        octx.print_object_header = old_print_object_header;
+        octx.print_object_footer = old_print_object_footer;
+
+        octx.print_string        = old_print_string;
+    } else {
+        av_log(NULL, AV_LOG_ERROR, "Unsupported formatter %s\n", arg);
+        return AVERROR(EINVAL);
+    }
+    return 0;
+}
+
+static int opt_show_format_entry(void *optctx, const char *opt, const char *arg)
 {
     do_show_format = 1;
     nb_fmt_entries_to_show++;
-    print_header        = NULL;
-    print_footer        = NULL;
-    print_array_header  = NULL;
-    print_array_footer  = NULL;
-    print_object_header = NULL;
-    print_object_footer = NULL;
-
-    print_integer = show_format_entry_integer;
-    print_string  = show_format_entry_string;
+    octx.print_header        = NULL;
+    octx.print_footer        = NULL;
+    octx.print_array_header  = NULL;
+    octx.print_array_footer  = NULL;
+    octx.print_object_header = NULL;
+    octx.print_object_footer = NULL;
+
+    octx.print_integer = show_format_entry_integer;
+    octx.print_string  = show_format_entry_string;
     av_dict_set(&fmt_entries_to_show, arg, "", 0);
     return 0;
 }
@@ -696,42 +875,44 @@ static void opt_input_file(void *optctx, const char *arg)
     input_filename = arg;
 }
 
-static void show_help(void)
+void show_help_default(const char *opt, const char *arg)
 {
     av_log_set_callback(log_callback_help);
     show_usage();
-    show_help_options(options, "Main options:\n", 0, 0);
+    show_help_options(options, "Main options:", 0, 0, 0);
     printf("\n");
     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
 }
 
-static void opt_pretty(void)
+static int opt_pretty(void *optctx, const char *opt, const char *arg)
 {
     show_value_unit              = 1;
     use_value_prefix             = 1;
     use_byte_value_binary_prefix = 1;
     use_value_sexagesimal_format = 1;
+    return 0;
 }
 
-static const OptionDef options[] = {
+static const OptionDef real_options[] = {
 #include "cmdutils_common_opts.h"
-    { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
-    { "unit", OPT_BOOL, {(void*)&show_value_unit},
+    { "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" },
+    { "of", HAS_ARG, {.func_arg = opt_output_format}, "output the document either as ini or json", "output_format" },
+    { "unit", OPT_BOOL, {&show_value_unit},
       "show unit of the displayed values" },
-    { "prefix", OPT_BOOL, {(void*)&use_value_prefix},
+    { "prefix", OPT_BOOL, {&use_value_prefix},
       "use SI prefixes for the displayed values" },
-    { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
+    { "byte_binary_prefix", OPT_BOOL, {&use_byte_value_binary_prefix},
       "use binary prefixes for byte units" },
-    { "sexagesimal", OPT_BOOL,  {(void*)&use_value_sexagesimal_format},
+    { "sexagesimal", OPT_BOOL,  {&use_value_sexagesimal_format},
       "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
-    { "pretty", 0, {(void*)&opt_pretty},
+    { "pretty", 0, {.func_arg = opt_pretty},
       "prettify the format of displayed values, make it more human readable" },
-    { "show_format",  OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
-    { "show_format_entry", HAS_ARG, {(void*)opt_show_format_entry},
+    { "show_format",  OPT_BOOL, {&do_show_format} , "show format/container info" },
+    { "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry},
       "show a particular entry from the format/container info", "entry" },
-    { "show_packets", OPT_BOOL, {(void*)&do_show_packets}, "show packets info" },
-    { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
-    { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default},
+    { "show_packets", OPT_BOOL, {&do_show_packets}, "show packets info" },
+    { "show_streams", OPT_BOOL, {&do_show_streams}, "show streams info" },
+    { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default},
       "generic catch all option", "" },
     { NULL, },
 };
@@ -752,6 +933,9 @@ int main(int argc, char **argv)
     if (!buffer)
         exit(1);
 
+    atexit(exit_program);
+
+    options = real_options;
     parse_loglevel(argc, argv, options);
     av_register_all();
     avformat_network_init();
@@ -761,6 +945,16 @@ int main(int argc, char **argv)
 #endif
 
     show_banner();
+
+    octx.print_header = ini_print_header;
+    octx.print_footer = ini_print_footer;
+
+    octx.print_array_header = ini_print_array_header;
+    octx.print_object_header = ini_print_object_header;
+
+    octx.print_integer = ini_print_integer;
+    octx.print_string = ini_print_string;
+
     parse_options(NULL, argc, argv, options, opt_input_file);
 
     if (!input_filename) {