stagefright: remove dependency on skia

skia is only used to write a jpeg file, link directly to libjpeg
instead.

Change-Id: Iea8f4a2347c38328776541d2b74bcbdea3f62041

4 files changed, 104 insertions, 15 deletions

diff --git a/cmds/stagefright/Android.mk b/cmds/stagefright/Android.mk
index 8b55c8f..52a9293 100644
--- a/cmds/stagefright/Android.mk
+++ b/cmds/stagefright/Android.mk
@@ -4,18 +4,18 @@ include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:=       \
 	stagefright.cpp \
+	jpeg.cpp	\
 	SineSource.cpp
 
 LOCAL_SHARED_LIBRARIES := \
 	libstagefright libmedia libmedia_native libutils libbinder libstagefright_foundation \
-        libskia libgui
+        libjpeg libgui
 
 LOCAL_C_INCLUDES:= \
 	frameworks/base/media/libstagefright \
 	frameworks/base/media/libstagefright/include \
 	$(TOP)/frameworks/native/include/media/openmax \
-	external/skia/include/core \
-	external/skia/include/images \
+	external/jpeg \
 
 LOCAL_CFLAGS += -Wno-multichar
 
diff --git a/cmds/stagefright/jpeg.cpp b/cmds/stagefright/jpeg.cpp
new file mode 100644
index 0000000..7e859c3
--- /dev/null
+++ b/cmds/stagefright/jpeg.cpp
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <setjmp.h>
+#include <stdio.h>
+
+extern "C" {
+#include "jpeglib.h"
+}
+
+static inline uint8_t from565to8(uint16_t p, int start, int bits) {
+    uint8_t c = (p >> start) & ((1 << bits) - 1);
+    return (c << (8 - bits)) | (c >> (bits - (8 - bits)));
+}
+
+struct sf_jpeg_error_mgr {
+    struct jpeg_error_mgr jerr;
+    jmp_buf longjmp_buffer;
+};
+
+void sf_jpeg_error_exit(j_common_ptr cinfo) {
+    struct sf_jpeg_error_mgr *sf_err = (struct sf_jpeg_error_mgr *)cinfo->err;
+    longjmp(sf_err->longjmp_buffer, 0);
+}
+
+int writeJpegFile(const char *filename, uint8_t *frame, int width, int height) {
+    struct sf_jpeg_error_mgr sf_err;
+    struct jpeg_compress_struct cinfo;
+    uint8_t row_data[width * 3];
+    JSAMPROW row_pointer = row_data;
+    FILE *f;
+
+    f = fopen(filename, "w");
+    if (!f) {
+        return -errno;
+    }
+
+    cinfo.err = jpeg_std_error(&sf_err.jerr);
+    sf_err.jerr.error_exit = sf_jpeg_error_exit;
+    if (setjmp(sf_err.longjmp_buffer)) {
+        jpeg_destroy_compress(&cinfo);
+        fclose(f);
+        return -1;
+    }
+
+    jpeg_create_compress(&cinfo);
+    jpeg_stdio_dest(&cinfo, f);
+
+    cinfo.image_width = width;
+    cinfo.image_height = height;
+    cinfo.input_components = 3;
+    cinfo.in_color_space = JCS_RGB;
+
+    jpeg_set_defaults(&cinfo);
+    jpeg_set_quality(&cinfo, 80, TRUE);
+
+    jpeg_start_compress(&cinfo, TRUE);
+
+    for (int row = 0; row < height; row++) {
+        uint16_t *src = (uint16_t *)(frame + row * width * 2);
+        uint8_t *dst = row_data;
+        for (int col = 0; col < width; col++) {
+            dst[0] = from565to8(*src, 11, 5);
+            dst[1] = from565to8(*src, 5, 6);
+            dst[2] = from565to8(*src, 0, 5);
+            dst += 3;
+            src++;
+        }
+        jpeg_write_scanlines(&cinfo, &row_pointer, 1);
+    }
+
+    jpeg_finish_compress(&cinfo);
+    jpeg_destroy_compress(&cinfo);
+
+    fclose(f);
+    return 0;
+}
diff --git a/cmds/stagefright/jpeg.h b/cmds/stagefright/jpeg.h
new file mode 100644
index 0000000..ce86cf2
--- /dev/null
+++ b/cmds/stagefright/jpeg.h
@@ -0,0 +1,6 @@
+#ifndef _STAGEFRIGHT_JPEG_H_
+#define _STAGEFRIGHT_JPEG_H_
+
+int writeJpegFile(const char *filename, uint8_t *frame, int width, int height);
+
+#endif
diff --git a/cmds/stagefright/stagefright.cpp b/cmds/stagefright/stagefright.cpp
index dab2e0f..d70c862 100644
--- a/cmds/stagefright/stagefright.cpp
+++ b/cmds/stagefright/stagefright.cpp
@@ -24,6 +24,7 @@
 #include <string.h>
 #include <unistd.h>
 
+#include "jpeg.h"
 #include "SineSource.h"
 
 #include <binder/IServiceManager.h>
@@ -49,8 +50,6 @@
 #include <media/stagefright/MPEG4Writer.h>
 
 #include <private/media/VideoFrame.h>
-#include <SkBitmap.h>
-#include <SkImageEncoder.h>
 
 #include <fcntl.h>
 
@@ -787,16 +786,9 @@ int main(int argc, char **argv) {
 
                 VideoFrame *frame = (VideoFrame *)mem->pointer();
 
-                SkBitmap bitmap;
-                bitmap.setConfig(
-                        SkBitmap::kRGB_565_Config, frame->mWidth, frame->mHeight);
-
-                bitmap.setPixels((uint8_t *)frame + sizeof(VideoFrame));
-
-                CHECK(SkImageEncoder::EncodeFile(
-                            "/sdcard/out.jpg", bitmap,
-                            SkImageEncoder::kJPEG_Type,
-                            SkImageEncoder::kDefaultQuality));
+                CHECK_EQ(writeJpegFile("/sdcard/out.jpg",
+                            (uint8_t *)frame + sizeof(VideoFrame),
+                            frame->mWidth, frame->mHeight), 0);
             }
 
             {