forked from forks/ffprobe-wasm
Add more bindings for AVFormatContext data. Add Overview page in Vue. Add required CORS headers for supporting SharedArrayBuffer in Firefox.
This commit is contained in:
Alf
12
Makefile
12
Makefile
@@ -1,16 +1,6 @@
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# dist/ffmpeg-webtools.js:
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# mkdir -p dist && \
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# emcc -L/opt/ffmpeg/lib -I/opt/ffmpeg/include/ src/main.c \
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# -s EXPORTED_FUNCTIONS='["_c_avformat_version", "_openfile", "_addOne"]' \
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# -s EXTRA_EXPORTED_RUNTIME_METHODS="[FS, cwrap, ccall, getValue, setValue, writeAsciiToMemory]" \
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# -s INITIAL_MEMORY=268435456 \
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# -lavcodec -lavformat -lavfilter -lavdevice -lswresample -lswscale -lavutil -lm -lx264 -pthread \
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# -o www/public/ffmpeg-webtools.js
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dist/ffmpeg-webtools.js:
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mkdir -p dist && \
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emcc \
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--bind \
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emcc --bind \
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-L/opt/ffmpeg/lib \
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-I/opt/ffmpeg/include/ \
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-s EXTRA_EXPORTED_RUNTIME_METHODS="[FS, cwrap, ccall, getValue, setValue, writeAsciiToMemory]" \
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38
src/main.c
38
src/main.c
@@ -1,38 +0,0 @@
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#include <stdio.h>
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#include <math.h>
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#include <libavcodec/avcodec.h>
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#include <libavformat/avformat.h>
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#include <libavutil/avutil.h>
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void version() {
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printf("%s\n", AV_STRINGIFY(LIBAVFORMAT_VERSION));
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}
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void openfile() {
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FILE *file = fopen("testingfs", "rb");
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if (!file) {
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printf("cannot open file\n");
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}
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fclose(file);
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AVFormatContext *pFormatContext = avformat_alloc_context();
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if (!pFormatContext) {
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printf("ERROR: could not allocate memory for Format Context\n");
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}
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printf("opening the input file: %s and loading format (container) header\n", "testingfs");
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// Open the file and read header.
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int ret;
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if ((ret = avformat_open_input(&pFormatContext, "testingfs", NULL, NULL)) < 0) {
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printf("ERROR: could not open the file. Error: %d\n", ret);
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printf("%s", av_err2str(ret));
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}
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printf("format: %s, duration: %lld us, bit_rate: %lld\n",
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pFormatContext->iformat->name,
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pFormatContext->duration,
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pFormatContext->bit_rate);
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}
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88
src/main.cpp
88
src/main.cpp
@@ -1,29 +1,40 @@
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#include <vector>
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#include <emscripten.h>
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#include <emscripten/bind.h>
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using namespace emscripten;
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extern "C" {
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#include <libavcodec/avcodec.h>
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#include <libavformat/avformat.h>
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#include <libavutil/avutil.h>
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};
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const std::string c_avformat_version() {
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return AV_STRINGIFY(LIBAVFORMAT_VERSION);
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}
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struct Response {
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struct Stream {
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int id;
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int start_time;
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int duration;
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int codec_type;
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};
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typedef struct Stream Stream;
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struct FileInfoResponse {
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std::string name;
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int bit_rate;
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int duration;
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std::string url;
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int nb_streams;
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int flags;
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std::vector<Stream> streams;
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};
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typedef struct FileInfoResponse FileInfoResponse;
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Response c_openfile() {
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FILE *file = fopen("testingfs", "rb");
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FileInfoResponse get_file_info() {
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FILE *file = fopen("file", "rb");
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if (!file) {
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printf("cannot open file\n");
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}
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@@ -33,40 +44,65 @@ Response c_openfile() {
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if (!pFormatContext) {
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printf("ERROR: could not allocate memory for Format Context\n");
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}
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printf("%p\n", pFormatContext);
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printf("opening the input file: %s and loading format (container) header\n", "testingfs");
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// Open the file and read header.
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int ret;
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if ((ret = avformat_open_input(&pFormatContext, "testingfs", NULL, NULL)) < 0) {
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if ((ret = avformat_open_input(&pFormatContext, "file", NULL, NULL)) < 0) {
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printf("ERROR: could not open the file. Error: %d\n", ret);
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printf("%s", av_err2str(ret));
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}
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printf("format: %s, duration: %lld us, bit_rate: %lld\n",
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pFormatContext->iformat->name,
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pFormatContext->duration,
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pFormatContext->bit_rate);
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// Initialize response struct with format data.
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FileInfoResponse r = {
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.name = pFormatContext->iformat->name,
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.bit_rate = (int)pFormatContext->bit_rate,
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.duration = (int)pFormatContext->duration,
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.url = pFormatContext->url,
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.nb_streams = (int)pFormatContext->nb_streams,
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.flags = pFormatContext->flags
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};
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Response r;
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r.name = pFormatContext->iformat->name;
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r.duration = pFormatContext->duration;
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r.bit_rate = pFormatContext->bit_rate;
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// Get streams data.
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AVCodec *pCodec = NULL;
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AVCodecParameters *pCodecParameters = NULL;
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int video_stream_index = -1;
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// Loop through the streams and print its information.
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for (int i = 0; i < pFormatContext->nb_streams; i++) {
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AVCodecParameters *pLocalCodecParameters = NULL;
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pLocalCodecParameters = pFormatContext->streams[i]->codecpar;
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Stream s = {
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.id = (int)pFormatContext->streams[i]->id,
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.start_time = (int)pFormatContext->streams[i]->start_time,
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.duration = (int)pFormatContext->streams[i]->duration,
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.codec_type = (int)pLocalCodecParameters->codec_type
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};
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r.streams.push_back(s);
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}
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return r;
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}
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};
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EMSCRIPTEN_BINDINGS(my_constant_example) {
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function("c_avformat_version", &c_avformat_version);
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}
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EMSCRIPTEN_BINDINGS(a_struct) {
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emscripten::value_object<Response>("Response")
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.field("name", &Response::name)
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.field("duration", &Response::duration)
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.field("bit_rate", &Response::bit_rate)
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EMSCRIPTEN_BINDINGS(FileInfoResponse_struct) {
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emscripten::value_object<Stream>("Stream")
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.field("id", &Stream::id)
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.field("start_time", &Stream::start_time)
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.field("duration", &Stream::duration)
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.field("codec_type", &Stream::codec_type)
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;
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function("c_openfile", &c_openfile);
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register_vector<Stream>("Stream");
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emscripten::value_object<FileInfoResponse>("FileInfoResponse")
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.field("name", &FileInfoResponse::name)
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.field("duration", &FileInfoResponse::duration)
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.field("bit_rate", &FileInfoResponse::bit_rate)
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.field("url", &FileInfoResponse::url)
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.field("nb_streams", &FileInfoResponse::nb_streams)
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.field("flags", &FileInfoResponse::flags)
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.field("streams", &FileInfoResponse::streams)
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;
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function("get_file_info", &get_file_info);
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}
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@@ -20,19 +20,25 @@
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<div v-if="data">
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<div class="mt-3">Selected file: {{ file ? `${file.name}: ${file.size} bytes` : '' }}</div>
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<hr />
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{{ info }}
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avformat_version: {{ avformat_version }}
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<b-tabs class="mt-4">
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<b-tab title="Overview" class="mt-2">
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<div v-if="data">
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<Overview :info="info" />
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</div>
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</b-tab>
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</b-tabs>
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</div>
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</div>
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</template>
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<script>
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import Overview from './Overview.vue';
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export default {
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name: 'File',
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components: {
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Overview,
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},
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data() {
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return {
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@@ -44,18 +50,10 @@ export default {
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},
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computed: {
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avformat_version() {
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// return window.Module.ccall('c_avformat_version', 'string');
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return window.Module.c_avformat_version();
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},
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info() {
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const data = this.data;
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console.log('writing data to memfs');
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window.Module.FS.writeFile('testingfs', new Uint8Array(data));
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console.log('writing data to memfs done');
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// window.Module.ccall('version');
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// Window.Module.ccall('openfile');
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return 'info';
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return this.data && window.Module.get_file_info();
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}
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},
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methods: {
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@@ -71,6 +69,7 @@ export default {
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reader.onload = (event) => {
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this.progress = 100;
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this.data = new Uint8Array(event.target.result);
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window.Module.FS.writeFile('file', new Uint8Array(this.data));
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setTimeout(() => { this.showProgress = false; }, 2000);
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}
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reader.onprogress = (event) => {
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39
www/src/components/Overview.vue
Normal file
39
www/src/components/Overview.vue
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@@ -0,0 +1,39 @@
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<template>
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<div>
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<h4>AVContext Info</h4>
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<b-table stacked :items="items"></b-table>
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<h4>AVContext Streams</h4>
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<b-table striped hover :items="streams"></b-table>
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</div>
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</template>
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<script>
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export default {
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name: 'Overview',
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props: ['info'],
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computed: {
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streams() {
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const s = [];
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for (let i = 0; i < this.info.streams.size(); i++) {
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s.push(this.info.streams.get(i));
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}
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return s;
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}
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},
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data() {
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return {
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items: [
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{
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name: this.info.name,
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duration: this.info.duration,
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bit_rate: this.info.bit_rate,
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url: this.info.url,
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nb_streams: this.info.nb_streams,
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flags: this.info.flags,
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},
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]
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}
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}
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}
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</script>
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@@ -8,4 +8,12 @@ module.exports = {
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publicPath: process.env.NODE_ENV === 'production'
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? '/ffmpeg-webtools/'
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: '/',
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configureWebpack: {
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devServer: {
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headers: {
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'Cross-Origin-Opener-Policy': 'same-origin',
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'Cross-Origin-Embedder-Policy': 'require-corp',
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}
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}
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},
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};
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