Update libx264 build and main.cpp with more fields.

src/main.cpp

@@ -1,4 +1,6 @@
 #include <vector>
+#include <string>
+#include <inttypes.h>
 #include <emscripten.h>
 #include <emscripten/bind.h>
 
@@ -8,21 +10,28 @@ extern "C" {
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 #include <libavutil/avutil.h>
+#include <libavutil/imgutils.h>
 };
 
 const std::string c_avformat_version() {
     return AV_STRINGIFY(LIBAVFORMAT_VERSION);
 }
 
-struct Stream {
+typedef struct Stream {
   int id;
   int start_time;
   int duration;
   int codec_type;
-};
-typedef struct Stream Stream;
+  std::string codec_name;
+  std::string format;
+  int bit_rate;
+  std::string profile;
+  int level;
+  int width;
+  int height;
+} Stream;
 
-struct FileInfoResponse {
+typedef struct FileInfoResponse {
   std::string name;
   int bit_rate;
   int duration;
@@ -30,8 +39,7 @@ struct FileInfoResponse {
   int nb_streams;
   int flags;
   std::vector<Stream> streams;
-};
-typedef struct FileInfoResponse FileInfoResponse;
+} FileInfoResponse;
 
 FileInfoResponse get_file_info() {
     FILE *file = fopen("file", "rb");
@@ -52,6 +60,11 @@ FileInfoResponse get_file_info() {
         printf("%s", av_err2str(ret));
     }
 
+    // Get stream info from format.
+    if (avformat_find_stream_info(pFormatContext, NULL) < 0) {
+      printf("ERROR: could not get stream info\n");
+    }
+
     // Initialize response struct with format data.
     FileInfoResponse r = {
       .name = pFormatContext->iformat->name,
@@ -71,13 +84,30 @@ FileInfoResponse get_file_info() {
     for (int i = 0; i < pFormatContext->nb_streams; i++) {
       AVCodecParameters *pLocalCodecParameters = NULL;
       pLocalCodecParameters = pFormatContext->streams[i]->codecpar;
-      Stream s = {
+
+      // Convert to char byte array.
+      uint32_t n = pLocalCodecParameters->codec_tag;
+      char fourcc[5];
+      for (int j = 0; j < 4; ++j) {
+        fourcc[j] = (n >> (j * 8) & 0xFF);
+      }
+      fourcc[4] = 0x00; // NULL terminator.
+
+      Stream stream = {
         .id = (int)pFormatContext->streams[i]->id,
         .start_time = (int)pFormatContext->streams[i]->start_time,
         .duration = (int)pFormatContext->streams[i]->duration,
-        .codec_type = (int)pLocalCodecParameters->codec_type
+        .codec_type = (int)pLocalCodecParameters->codec_type,
+        .codec_name = fourcc,
+        .format = av_get_pix_fmt_name((AVPixelFormat)pLocalCodecParameters->format),
+        .bit_rate = (int)pLocalCodecParameters->bit_rate,
+        .profile = avcodec_profile_name(pLocalCodecParameters->codec_id, pLocalCodecParameters->profile),
+        .level = (int)pLocalCodecParameters->level,
+        .width = (int)pLocalCodecParameters->width,
+        .height = (int)pLocalCodecParameters->height,
       };
-      r.streams.push_back(s);
+      r.streams.push_back(stream);
+      free(fourcc);
     }
     return r;
 }
@@ -93,6 +123,13 @@ EMSCRIPTEN_BINDINGS(FileInfoResponse_struct) {
   .field("start_time", &Stream::start_time)
   .field("duration", &Stream::duration)
   .field("codec_type", &Stream::codec_type)
+  .field("codec_name", &Stream::codec_name)
+  .field("format", &Stream::format)
+  .field("bit_rate", &Stream::bit_rate)
+  .field("profile", &Stream::profile)
+  .field("level", &Stream::level)
+  .field("width", &Stream::width)
+  .field("height", &Stream::height)
   ;
   register_vector<Stream>("Stream");
   emscripten::value_object<FileInfoResponse>("FileInfoResponse")