mirror of
https://github.com/Genymobile/scrcpy
synced 2024-12-27 09:32:12 +00:00
Add icon loader
Add helper to load icons from image files via FFmpeg.
This commit is contained in:
Romain Vimont
parent
156d958e77
commit
0e4564da03
@ -9,6 +9,7 @@ src = [
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'src/decoder.c',
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'src/device_msg.c',
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'src/event_converter.c',
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'src/icon.c',
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'src/file_handler.c',
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'src/fps_counter.c',
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'src/frame_buffer.c',
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247
app/src/icon.c
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247
app/src/icon.c
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@ -0,0 +1,247 @@
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#include "icon.h"
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#include <assert.h>
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#include <stdbool.h>
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#include <libavformat/avformat.h>
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#include <libavutil/pixdesc.h>
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#include <libavutil/pixfmt.h>
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#include "config.h"
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#include "compat.h"
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#include "util/log.h"
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#include "util/process.h"
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#include "util/str_util.h"
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#define SCRCPY_PORTABLE_ICON_FILENAME "icon.png"
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#define SCRCPY_DEFAULT_ICON_PATH \
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PREFIX "/share/icons/hicolor/256x256/apps/scrcpy.png"
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static char *
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get_icon_path(void) {
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#ifdef __WINDOWS__
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const wchar_t *icon_path_env = _wgetenv(L"SCRCPY_ICON_PATH");
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#else
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const char *icon_path_env = getenv("SCRCPY_ICON_PATH");
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#endif
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if (icon_path_env) {
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// if the envvar is set, use it
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#ifdef __WINDOWS__
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char *icon_path = utf8_from_wide_char(icon_path_env);
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#else
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char *icon_path = strdup(icon_path_env);
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#endif
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if (!icon_path) {
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LOGE("Could not allocate memory");
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return NULL;
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}
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LOGD("Using SCRCPY_ICON_PATH: %s", icon_path);
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return icon_path;
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}
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#ifndef PORTABLE
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LOGD("Using icon: " SCRCPY_DEFAULT_ICON_PATH);
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char *icon_path = strdup(SCRCPY_DEFAULT_ICON_PATH);
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if (!icon_path) {
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LOGE("Could not allocate memory");
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return NULL;
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}
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#else
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char *icon_path = get_local_file_path(SCRCPY_PORTABLE_ICON_FILENAME);
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if (!icon_path) {
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LOGE("Could not get icon path");
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return NULL;
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}
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LOGD("Using icon (portable): %s", icon_path);
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#endif
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return icon_path;
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}
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static AVFrame *
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decode_image(const char *path) {
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AVFrame *result = NULL;
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AVFormatContext *ctx = avformat_alloc_context();
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if (!ctx) {
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LOGE("Could not allocate image decoder context");
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return NULL;
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}
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if (avformat_open_input(&ctx, path, NULL, NULL) < 0) {
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LOGE("Could not open image codec: %s", path);
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goto free_ctx;
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}
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if (avformat_find_stream_info(ctx, NULL) < 0) {
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LOGE("Could not find image stream info");
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goto close_input;
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}
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int stream = av_find_best_stream(ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
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if (stream < 0 ) {
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LOGE("Could not find best image stream");
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goto close_input;
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}
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AVCodecParameters *params = ctx->streams[stream]->codecpar;
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AVCodec *codec = avcodec_find_decoder(params->codec_id);
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if (!codec) {
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LOGE("Could not find image decoder");
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goto close_input;
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}
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AVCodecContext *codec_ctx = avcodec_alloc_context3(codec);
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if (!codec_ctx) {
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LOGE("Could not allocate codec context");
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goto close_input;
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}
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if (avcodec_parameters_to_context(codec_ctx, params) < 0) {
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LOGE("Could not fill codec context");
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goto free_codec_ctx;
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}
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if (avcodec_open2(codec_ctx, codec, NULL) < 0) {
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LOGE("Could not open image codec");
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goto free_codec_ctx;
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}
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AVFrame *frame = av_frame_alloc();
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if (!frame) {
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LOGE("Could not allocate frame");
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goto close_codec;
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}
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AVPacket *packet = av_packet_alloc();
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if (!packet) {
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LOGE("Could not allocate packet");
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av_frame_free(&frame);
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goto close_codec;
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}
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if (av_read_frame(ctx, packet) < 0) {
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LOGE("Could not read frame");
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av_packet_free(&packet);
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av_frame_free(&frame);
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goto close_codec;
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}
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int ret;
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if ((ret = avcodec_send_packet(codec_ctx, packet)) < 0) {
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LOGE("Could not send icon packet: %d", ret);
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av_packet_free(&packet);
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av_frame_free(&frame);
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goto close_codec;
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}
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if ((ret = avcodec_receive_frame(codec_ctx, frame)) != 0) {
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LOGE("Could not receive icon frame: %d", ret);
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av_packet_free(&packet);
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av_frame_free(&frame);
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goto close_codec;
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}
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av_packet_free(&packet);
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result = frame;
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close_codec:
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avcodec_close(codec_ctx);
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free_codec_ctx:
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avcodec_free_context(&codec_ctx);
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close_input:
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avformat_close_input(&ctx);
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free_ctx:
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avformat_free_context(ctx);
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return result;
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}
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static SDL_PixelFormatEnum
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to_sdl_pixel_format(enum AVPixelFormat fmt) {
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switch (fmt) {
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case AV_PIX_FMT_RGB24: return SDL_PIXELFORMAT_RGB24;
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case AV_PIX_FMT_BGR24: return SDL_PIXELFORMAT_BGR24;
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case AV_PIX_FMT_ARGB: return SDL_PIXELFORMAT_ARGB32;
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case AV_PIX_FMT_RGBA: return SDL_PIXELFORMAT_RGBA32;
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case AV_PIX_FMT_ABGR: return SDL_PIXELFORMAT_ABGR32;
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case AV_PIX_FMT_BGRA: return SDL_PIXELFORMAT_BGRA32;
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case AV_PIX_FMT_RGB565BE: return SDL_PIXELFORMAT_RGB565;
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case AV_PIX_FMT_RGB555BE: return SDL_PIXELFORMAT_RGB555;
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case AV_PIX_FMT_BGR565BE: return SDL_PIXELFORMAT_BGR565;
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case AV_PIX_FMT_BGR555BE: return SDL_PIXELFORMAT_BGR555;
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case AV_PIX_FMT_RGB444BE: return SDL_PIXELFORMAT_RGB444;
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case AV_PIX_FMT_BGR444BE: return SDL_PIXELFORMAT_BGR444;
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default: return SDL_PIXELFORMAT_UNKNOWN;
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}
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}
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static SDL_Surface *
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load_from_path(const char *path) {
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AVFrame *frame = decode_image(path);
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if (!frame) {
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return NULL;
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}
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
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if (!desc) {
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LOGE("Could not get icon format descriptor");
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goto error;
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}
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bool is_packed_rgb = desc->flags & AV_PIX_FMT_FLAG_RGB
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&& !(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
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if (!is_packed_rgb) {
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LOGE("Could not load non-RGB icon");
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goto error;
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}
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SDL_PixelFormatEnum format = to_sdl_pixel_format(frame->format);
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if (format == SDL_PIXELFORMAT_UNKNOWN) {
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LOGE("Unsupported icon pixel format: %s (%d)", desc->name,
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frame->format);
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goto error;
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}
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int bits_per_pixel = av_get_bits_per_pixel(desc);
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SDL_Surface *surface =
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SDL_CreateRGBSurfaceWithFormatFrom(frame->data[0],
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frame->width, frame->height,
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bits_per_pixel,
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frame->linesize[0],
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format);
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if (!surface) {
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LOGE("Could not create icon surface");
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goto error;
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}
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surface->userdata = frame; // frame owns the data
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return surface;
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error:
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av_frame_free(&frame);
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return NULL;
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}
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SDL_Surface *
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scrcpy_icon_load() {
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char *icon_path = get_icon_path();
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if (!icon_path) {
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return NULL;
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}
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SDL_Surface *icon = load_from_path(icon_path);
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free(icon_path);
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return icon;
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}
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void
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scrcpy_icon_destroy(SDL_Surface *icon) {
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AVFrame *frame = icon->userdata;
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assert(frame);
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av_frame_free(&frame);
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SDL_FreeSurface(icon);
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}
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16
app/src/icon.h
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16
app/src/icon.h
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@ -0,0 +1,16 @@
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#ifndef ICON_H
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#define ICON_H
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#include "common.h"
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#include <stdbool.h>
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#include <SDL2/SDL.h>
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#include <libavformat/avformat.h>
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SDL_Surface *
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scrcpy_icon_load(void);
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void
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scrcpy_icon_destroy(SDL_Surface *icon);
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#endif
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