Merge pull request #456 from allquixotic/gst1.0-2020

Add gstreamer backend to librespot

.travis.yml

@@ -40,6 +40,8 @@ addons:
       - portaudio19-dev
       - libasound2-dev
       - libsdl2-dev
+      - gstreamer1.0-dev
+      - libgstreamer-plugins-base1.0-dev
 
 before_script:
     - mkdir -p ~/.cargo
@@ -58,6 +60,7 @@ script:
     - cargo build --locked --no-default-features --features "jackaudio-backend"
     - cargo build --locked --no-default-features --features "rodio-backend"
     - cargo build --locked --no-default-features --features "sdl-backend"
+    - cargo build --locked --no-default-features --features "gstreamer-backend"
     - cargo build --locked --no-default-features --target armv7-unknown-linux-gnueabihf
 
 notifications:

Cargo.lock

@@ -462,6 +462,19 @@ name = "futures"
 version = "0.1.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "futures-channel"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "futures-core"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "futures-cpupool"
 version = "0.1.8"
@@ -471,6 +484,55 @@ dependencies = [
  "num_cpus 1.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "futures-executor"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "futures-macro"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro-hack 0.5.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "futures-sink"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "futures-task"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "once_cell 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "futures-util"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-macro 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-utils 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-hack 0.5.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-nested 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "gcc"
 version = "0.3.55"
@@ -522,11 +584,137 @@ dependencies = [
  "wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "glib"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-channel 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-executor 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.73 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "glib-sys"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.73 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "glob"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "gobject-sys"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.73 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer"
+version = "0.15.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-channel 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.73 (registry+https://github.com/rust-lang/crates.io-index)",
+ "muldiv 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-rational 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "paste 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-app"
+version = "0.15.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-sink 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer 0.15.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-app-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-base 0.15.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.73 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-app-sys"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-base-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.73 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-base"
+version = "0.15.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer 0.15.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-base-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.73 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-base-sys"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.73 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-sys"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.73 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.15"
@@ -874,6 +1062,9 @@ dependencies = [
  "byteorder 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "cpal 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer 0.15.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-app 0.15.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "jack 0.5.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.73 (registry+https://github.com/rust-lang/crates.io-index)",
  "libpulse-sys 0.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -885,6 +1076,7 @@ dependencies = [
  "rodio 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sdl2 0.32.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "shell-words 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zerocopy 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1036,6 +1228,11 @@ dependencies = [
  "winapi 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "muldiv"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "multimap"
 version = "0.8.1"
@@ -1184,6 +1381,11 @@ dependencies = [
  "pkg-config 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "once_cell"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "opaque-debug"
 version = "0.2.3"
@@ -1213,6 +1415,23 @@ dependencies = [
  "winapi 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "paste"
+version = "0.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "paste-impl 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-hack 0.5.16 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "paste-impl"
+version = "0.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro-hack 0.5.16 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "pbkdf2"
 version = "0.3.0"
@@ -1237,6 +1456,29 @@ name = "percent-encoding"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "pin-project"
+version = "0.4.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "pin-project-internal 0.4.22 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "0.4.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "pin-utils"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "pkg-config"
 version = "0.3.18"
@@ -1266,6 +1508,24 @@ name = "ppv-lite86"
 version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "proc-macro-hack"
+version = "0.5.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "proc-macro-nested"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "proc-macro2"
+version = "0.4.30"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.19"
@@ -1301,6 +1561,14 @@ name = "quick-error"
 version = "1.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "quote"
+version = "0.6.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.7"
@@ -1736,6 +2004,16 @@ name = "subtle"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "syn"
+version = "0.15.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.35"
@@ -1746,6 +2024,17 @@ dependencies = [
  "unicode-xid 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "synstructure"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "take"
 version = "0.1.0"
@@ -2071,6 +2360,11 @@ name = "unicode-width"
 version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "unicode-xid"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "unicode-xid"
 version = "0.2.1"
@@ -2208,6 +2502,25 @@ dependencies = [
  "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "zerocopy"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "byteorder 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zerocopy-derive 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)",
+ "synstructure 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [metadata]
 "checksum aes 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "54eb1d8fe354e5fc611daf4f2ea97dd45a765f4f1e4512306ec183ae2e8f20c9"
 "checksum aes-ctr 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d2e5b0458ea3beae0d1d8c0f3946564f8e10f90646cf78c06b4351052058d1ee"
@@ -2265,14 +2578,30 @@ dependencies = [
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@@ -2314,6 +2643,7 @@ dependencies = [
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@@ -2329,21 +2659,31 @@ dependencies = [
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 "checksum quick-error 1.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
+"checksum quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
 "checksum quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)" = "aa563d17ecb180e500da1cfd2b028310ac758de548efdd203e18f283af693f37"
 "checksum rand 0.3.23 (registry+https://github.com/rust-lang/crates.io-index)" = "64ac302d8f83c0c1974bf758f6b041c6c8ada916fbb44a609158ca8b064cc76c"
 "checksum rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "552840b97013b1a26992c11eac34bdd778e464601a4c2054b5f0bff7c6761293"
@@ -2398,7 +2738,9 @@ dependencies = [
 "checksum stdweb 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ef5430c8e36b713e13b48a9f709cc21e046723fe44ce34587b73a830203b533e"
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+"checksum syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)" = "9ca4b3b69a77cbe1ffc9e198781b7acb0c7365a883670e8f1c1bc66fba79a5c5"
 "checksum syn 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)" = "fb7f4c519df8c117855e19dd8cc851e89eb746fe7a73f0157e0d95fdec5369b0"
+"checksum synstructure 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)" = "02353edf96d6e4dc81aea2d8490a7e9db177bf8acb0e951c24940bf866cb313f"
 "checksum take 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b157868d8ac1f56b64604539990685fa7611d8fa9e5476cf0c02cf34d32917c5"
 "checksum tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
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@@ -2428,6 +2770,7 @@ dependencies = [
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 "checksum unicode-width 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "9337591893a19b88d8d87f2cec1e73fad5cdfd10e5a6f349f498ad6ea2ffb1e3"
+"checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
 "checksum unicode-xid 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
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@@ -2446,3 +2789,5 @@ dependencies = [
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+"checksum zerocopy 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "992b9b31f80fd4a167f903f879b8ca43d6716cc368ea01df90538baa2dd34056"
+"checksum zerocopy-derive 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b090467ecd0624026e8a6405d343ac7382592530d54881330b3fc8e400280fa5"

Cargo.toml

@@ -65,6 +65,7 @@ pulseaudio-backend = ["librespot-playback/pulseaudio-backend"]
 jackaudio-backend = ["librespot-playback/jackaudio-backend"]
 rodio-backend = ["librespot-playback/rodio-backend"]
 sdl-backend = ["librespot-playback/sdl-backend"]
+gstreamer-backend = ["librespot-playback/gstreamer-backend"]
 
 with-tremor = ["librespot-audio/with-tremor"]
 with-vorbis = ["librespot-audio/with-vorbis"]

playback/Cargo.toml

@@ -22,14 +22,18 @@ log = "0.4"
 byteorder = "1.3"
 shell-words = "0.1.0"
 
-alsa            = { version = "0.2.1", optional = true }
+alsa            = { version = "0.2", optional = true }
-portaudio-rs    = { version = "0.3.0", optional = true }
+portaudio-rs    = { version = "0.3", optional = true }
 libpulse-sys    = { version = "0.0.0", optional = true }
-jack            = { version = "0.5.3", optional = true }
+jack            = { version = "0.5", optional = true }
 libc            = { version = "0.2", optional = true }
 rodio           = { version = "0.9", optional = true, default-features = false }
 cpal            = { version = "0.8", optional = true }
 sdl2            = { version = "0.32", optional = true }
+gstreamer       = { version = "0.15", optional = true }
+gstreamer-app   = { version = "0.15", optional = true }
+glib            = { version = "0.9", optional = true }
+zerocopy        = { version = "0.2", optional = true }
 
 [features]
 alsa-backend = ["alsa"]
@@ -38,3 +42,4 @@ pulseaudio-backend = ["libpulse-sys", "libc"]
 jackaudio-backend = ["jack"]
 rodio-backend = ["rodio", "cpal"]
 sdl-backend = ["sdl2"]
+gstreamer-backend = ["gstreamer", "gstreamer-app", "glib", "zerocopy"]

playback/src/audio_backend/gstreamer.rs

@@ -0,0 +1,115 @@
+use super::{Open, Sink};
+use gst::prelude::*;
+use gst::*;
+use std::sync::mpsc::{sync_channel, SyncSender};
+use std::{io, thread};
+use zerocopy::*;
+
+#[allow(dead_code)]
+pub struct GstreamerSink {
+    tx: SyncSender<Vec<u8>>,
+    pipeline: gst::Pipeline,
+}
+
+impl Open for GstreamerSink {
+    fn open(device: Option<String>) -> GstreamerSink {
+        gst::init().expect("Failed to init gstreamer!");
+        let pipeline_str_preamble = r#"appsrc caps="audio/x-raw,format=S16LE,layout=interleaved,channels=2,rate=44100" block=true max-bytes=4096 name=appsrc0 "#;
+        let pipeline_str_rest = r#" ! audioconvert ! autoaudiosink"#;
+        let pipeline_str: String = match device {
+            Some(x) => format!("{}{}", pipeline_str_preamble, x),
+            None => format!("{}{}", pipeline_str_preamble, pipeline_str_rest),
+        };
+        info!("Pipeline: {}", pipeline_str);
+
+        gst::init().unwrap();
+        let pipelinee = gst::parse_launch(&*pipeline_str).expect("Couldn't launch pipeline; likely a GStreamer issue or an error in the pipeline string you specified in the 'device' argument to librespot.");
+        let pipeline = pipelinee
+            .dynamic_cast::<gst::Pipeline>()
+            .expect("Couldn't cast pipeline element at runtime!");
+        let bus = pipeline.get_bus().expect("Couldn't get bus from pipeline");
+        let mainloop = glib::MainLoop::new(None, false);
+        let appsrce: gst::Element = pipeline
+            .get_by_name("appsrc0")
+            .expect("Couldn't get appsrc from pipeline");
+        let appsrc: gst_app::AppSrc = appsrce
+            .dynamic_cast::<gst_app::AppSrc>()
+            .expect("Couldn't cast AppSrc element at runtime!");
+        let bufferpool = gst::BufferPool::new();
+        let appsrc_caps = appsrc.get_caps().expect("Couldn't get appsrc caps");
+        let mut conf = bufferpool.get_config();
+        conf.set_params(Some(&appsrc_caps), 8192, 0, 0);
+        bufferpool
+            .set_config(conf)
+            .expect("Couldn't configure the buffer pool");
+        bufferpool
+            .set_active(true)
+            .expect("Couldn't activate buffer pool");
+
+        let (tx, rx) = sync_channel::<Vec<u8>>(128);
+        thread::spawn(move || {
+            for data in rx {
+                let buffer = bufferpool.acquire_buffer(None);
+                if !buffer.is_err() {
+                    let mut okbuffer = buffer.unwrap();
+                    let mutbuf = okbuffer.make_mut();
+                    mutbuf.set_size(data.len());
+                    mutbuf
+                        .copy_from_slice(0, data.as_bytes())
+                        .expect("Failed to copy from slice");
+                    let _eat = appsrc.push_buffer(okbuffer);
+                }
+            }
+        });
+
+        thread::spawn(move || {
+            let thread_mainloop = mainloop;
+            let watch_mainloop = thread_mainloop.clone();
+            bus.add_watch(move |_, msg| {
+                match msg.view() {
+                    MessageView::Eos(..) => watch_mainloop.quit(),
+                    MessageView::Error(err) => {
+                        println!(
+                            "Error from {:?}: {} ({:?})",
+                            err.get_src().map(|s| s.get_path_string()),
+                            err.get_error(),
+                            err.get_debug()
+                        );
+                        watch_mainloop.quit();
+                    }
+                    _ => (),
+                };
+
+                glib::Continue(true)
+            })
+            .expect("Failed to add bus watch");
+            thread_mainloop.run();
+        });
+
+        pipeline
+            .set_state(gst::State::Playing)
+            .expect("Unable to set the pipeline to the `Playing` state");
+
+        GstreamerSink {
+            tx: tx,
+            pipeline: pipeline,
+        }
+    }
+}
+
+impl Sink for GstreamerSink {
+    fn start(&mut self) -> io::Result<()> {
+        Ok(())
+    }
+    fn stop(&mut self) -> io::Result<()> {
+        Ok(())
+    }
+    fn write(&mut self, data: &[i16]) -> io::Result<()> {
+        // Copy expensively (in to_vec()) to avoid thread synchronization
+        let deighta: &[u8] = data.as_bytes();
+        self.tx
+            .send(deighta.to_vec())
+            .expect("tx send failed in write function");
+        Ok(())
+    }
+}

playback/src/audio_backend/mod.rs

@@ -34,6 +34,11 @@ mod jackaudio;
 #[cfg(feature = "jackaudio-backend")]
 use self::jackaudio::JackSink;
 
+#[cfg(feature = "gstreamer-backend")]
+mod gstreamer;
+#[cfg(feature = "gstreamer-backend")]
+use self::gstreamer::GstreamerSink;
+
 #[cfg(feature = "rodio-backend")]
 mod rodio;
 #[cfg(feature = "rodio-backend")]
@@ -58,6 +63,8 @@ pub const BACKENDS: &'static [(&'static str, fn(Option<String>) -> Box<dyn Sink>
     ("pulseaudio", mk_sink::<PulseAudioSink>),
     #[cfg(feature = "jackaudio-backend")]
     ("jackaudio", mk_sink::<JackSink>),
+    #[cfg(feature = "gstreamer-backend")]
+    ("gstreamer", mk_sink::<GstreamerSink>),
     #[cfg(feature = "rodio-backend")]
     ("rodio", mk_sink::<RodioSink>),
     #[cfg(feature = "sdl-backend")]

playback/src/lib.rs

@@ -17,6 +17,15 @@ extern crate libpulse_sys;
 #[cfg(feature = "jackaudio-backend")]
 extern crate jack;
 
+#[cfg(feature = "gstreamer-backend")]
+extern crate glib;
+#[cfg(feature = "gstreamer-backend")]
+extern crate gstreamer as gst;
+#[cfg(feature = "gstreamer-backend")]
+extern crate gstreamer_app as gst_app;
+#[cfg(feature = "gstreamer-backend")]
+extern crate zerocopy;
+
 #[cfg(feature = "sdl-backend")]
 extern crate sdl2;