[vlc-devel] [PATCH 1/1] vpx: add vp8 and vp9 encoder
Tristan Matthews
tmatth at videolan.org
Tue Feb 9 06:01:11 CET 2016
---
NEWS | 1 +
configure.ac | 8 ++-
modules/MODULES_LIST | 2 +-
modules/codec/vpx.c | 186 +++++++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 195 insertions(+), 2 deletions(-)
diff --git a/NEWS b/NEWS
index ee0e99e..3e69c3a 100644
--- a/NEWS
+++ b/NEWS
@@ -131,6 +131,7 @@ Stream Output:
Encoder:
* Support for Daala video in 4:2:0 and 4:4:4
+ * VP8 and VP9 encoder using libvpx
Muxers:
* Added fragmented/streamable MP4 muxer
diff --git a/configure.ac b/configure.ac
index 344d93e..99fd0e8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2627,7 +2627,7 @@ dnl
dnl libvpx decoder plugin
dnl
AC_ARG_ENABLE(vpx,
- AS_HELP_STRING([--enable-vpx],[libvpx VP8/VP9 decoder (default auto)]))
+ AS_HELP_STRING([--enable-vpx],[libvpx VP8/VP9 encoder and decoder (default auto)]))
AS_IF([test "${enable_vpx}" != "no"],[
PKG_CHECK_MODULES([VPX], [vpx] , [
VLC_ADD_PLUGIN([vpx])
@@ -2639,6 +2639,12 @@ AS_IF([test "${enable_vpx}" != "no"],[
AC_CHECK_LIB([vpx],[vpx_codec_vp9_dx], [
VLC_ADD_CPPFLAGS([vpx], [-DENABLE_VP9_DECODER])
], [], [${VPX_LIBS}])
+ AC_CHECK_LIB([vpx],[vpx_codec_vp8_cx], [
+ VLC_ADD_CPPFLAGS([vpx], [-DENABLE_VP8_ENCODER])
+ ], [], [${VPX_LIBS}])
+ AC_CHECK_LIB([vpx],[vpx_codec_vp9_cx], [
+ VLC_ADD_CPPFLAGS([vpx], [-DENABLE_VP9_ENCODER])
+ ], [], [${VPX_LIBS}])
], [
AS_IF([test "${enable_vpx}" = "yes"],[
AC_MSG_ERROR([libvpx was not found])
diff --git a/modules/MODULES_LIST b/modules/MODULES_LIST
index 2afbcae..394b3db 100644
--- a/modules/MODULES_LIST
+++ b/modules/MODULES_LIST
@@ -438,7 +438,7 @@ $Id$
* vout_ios2: iOS video provider using OpenGL ES 2
* vout_macosx: Mac OS X OpenGL provider
* vout_sdl: video output module using the SDL library
- * vpx: WebM decoder (VP8/VP9)
+ * vpx: WebM encoder and decoder (VP8/VP9)
* vsxu: audio visualization using Vovoid VSXu
* wall: image wall filter
* wasapi: Wasapi audio output module
diff --git a/modules/codec/vpx.c b/modules/codec/vpx.c
index aee6b5f..e59fcca 100644
--- a/modules/codec/vpx.c
+++ b/modules/codec/vpx.c
@@ -34,11 +34,28 @@
#include <vpx/vpx_decoder.h>
#include <vpx/vp8dx.h>
+#ifdef ENABLE_SOUT
+# include <vpx/vpx_encoder.h>
+# include <vpx/vp8cx.h>
+#endif
+
/****************************************************************************
* Local prototypes
****************************************************************************/
+static const char *const ppsz_sout_options[] = { "quality-mode", NULL };
static int OpenDecoder(vlc_object_t *);
static void CloseDecoder(vlc_object_t *);
+#ifdef ENABLE_SOUT
+static int OpenEncoder(vlc_object_t *);
+static void CloseEncoder(vlc_object_t *);
+static block_t *Encode(encoder_t *p_enc, picture_t *p_pict);
+
+#define QUALITY_MODE_TEXT N_("Quality mode")
+#define QUALITY_MODE_LONGTEXT N_("Quality setting which will determine max encoding time, default 0\n" \
+ " - 0: Good quality\n"\
+ " - 1: Realtime\n"\
+ " - 2: Best quality")
+#endif
/*****************************************************************************
* Module descriptor
@@ -51,6 +68,17 @@ vlc_module_begin ()
set_callbacks(OpenDecoder, CloseDecoder)
set_category(CAT_INPUT)
set_subcategory(SUBCAT_INPUT_VCODEC)
+#ifdef ENABLE_SOUT
+ add_submodule()
+ set_shortname("vpx")
+ set_capability("encoder", 60)
+ set_description(N_("WebM video encoder"))
+ set_callbacks(OpenEncoder, CloseEncoder)
+# define ENC_CFG_PREFIX "sout-vpx-"
+ add_integer( ENC_CFG_PREFIX "quality-mode", VPX_DL_GOOD_QUALITY, QUALITY_MODE_TEXT,
+ QUALITY_MODE_LONGTEXT, true )
+ change_integer_range( 0, 2 )
+#endif
vlc_module_end ()
static void vpx_err_msg(vlc_object_t *this, struct vpx_codec_ctx *ctx,
@@ -235,3 +263,161 @@ static void CloseDecoder(vlc_object_t *p_this)
free(sys);
}
+
+#ifdef ENABLE_SOUT
+
+/*****************************************************************************
+ * encoder_sys_t: libvpx encoder descriptor
+ *****************************************************************************/
+struct encoder_sys_t
+{
+ struct vpx_codec_ctx ctx;
+};
+
+/*****************************************************************************
+ * OpenEncoder: probe the encoder
+ *****************************************************************************/
+static int OpenEncoder(vlc_object_t *p_this)
+{
+ encoder_t *p_enc = (encoder_t *)p_this;
+ encoder_sys_t *p_sys;
+
+ /* Allocate the memory needed to store the encoder's structure */
+ p_sys = malloc(sizeof(*p_sys));
+ if (p_sys == NULL)
+ return VLC_ENOMEM;
+ p_enc->p_sys = p_sys;
+
+ const struct vpx_codec_iface *iface;
+ int vp_version;
+
+ switch (p_enc->fmt_out.i_codec)
+ {
+#ifdef ENABLE_VP8_ENCODER
+ case VLC_CODEC_VP8:
+ iface = &vpx_codec_vp8_cx_algo;
+ vp_version = 8;
+ break;
+#endif
+#ifdef ENABLE_VP9_DECODER
+ case VLC_CODEC_VP9:
+ iface = &vpx_codec_vp9_cx_algo;
+ vp_version = 9;
+ break;
+#endif
+ default:
+ return VLC_EGENERIC;
+ }
+
+ struct vpx_codec_enc_cfg enccfg = {};
+ vpx_codec_enc_config_default(iface, &enccfg, 0);
+ enccfg.g_threads = __MIN(vlc_GetCPUCount(), 4);
+ enccfg.g_w = p_enc->fmt_in.video.i_visible_width;
+ enccfg.g_h = p_enc->fmt_in.video.i_visible_height;
+
+ msg_Dbg(p_this, "VP%d: using libvpx version %s (build options %s)",
+ vp_version, vpx_codec_version_str(), vpx_codec_build_config());
+
+ struct vpx_codec_ctx *ctx = &p_sys->ctx;
+ if (vpx_codec_enc_init(ctx, iface, &enccfg, 0) != VPX_CODEC_OK) {
+ VPX_ERR(p_this, ctx, "Failed to initialize encoder: %s (%s)");
+ free(p_sys);
+ return VLC_EGENERIC;
+ }
+
+ p_enc->pf_encode_video = Encode;
+ p_enc->fmt_in.i_codec = VLC_CODEC_I420;
+ config_ChainParse(p_enc, ENC_CFG_PREFIX, ppsz_sout_options, p_enc->p_cfg);
+
+ return VLC_SUCCESS;
+}
+
+/****************************************************************************
+ * Encode: the whole thing
+ ****************************************************************************/
+static block_t *Encode(encoder_t *p_enc, picture_t *p_pict)
+{
+ encoder_sys_t *p_sys = p_enc->p_sys;
+ struct vpx_codec_ctx *ctx = &p_sys->ctx;
+
+ if (!p_pict) return NULL;
+
+ vpx_image_t img = {};
+ unsigned i_w = p_enc->fmt_in.video.i_visible_width;
+ unsigned i_h = p_enc->fmt_in.video.i_visible_height;
+
+ /* Create and initialize the vpx_image */
+ if (!vpx_img_alloc(&img, VPX_IMG_FMT_I420, i_w, i_h, 1)) {
+ VPX_ERR(p_enc, ctx, "Failed to allocate image: %s (%s)");
+ return NULL;
+ }
+ for (int plane = 0; plane < p_pict->i_planes; plane++) {
+ uint8_t *src = p_pict->p[plane].p_pixels;
+ uint8_t *dst = img.planes[plane];
+ int src_stride = p_pict->p[plane].i_pitch;
+ int dst_stride = img.stride[plane];
+
+ int size = __MIN(src_stride, dst_stride);
+ for (int line = 0; line < p_pict->p[plane].i_visible_lines; line++)
+ {
+ memcpy(dst, src, size);
+ src += src_stride;
+ dst += dst_stride;
+ }
+ }
+
+ int flags = 0;
+ /* Deadline (in ms) to spend in encoder */
+ int quality = VPX_DL_GOOD_QUALITY;
+ switch (var_GetInteger(p_enc, ENC_CFG_PREFIX "quality-mode")) {
+ case 1:
+ quality = VPX_DL_REALTIME;
+ break;
+ case 2:
+ quality = VPX_DL_BEST_QUALITY;
+ break;
+ default:
+ break;
+ }
+
+ vpx_codec_err_t res = vpx_codec_encode(ctx, &img, p_pict->date, 1,
+ flags, quality);
+ if (res != VPX_CODEC_OK) {
+ VPX_ERR(p_enc, ctx, "Failed to encode frame: %s (%s)");
+ return NULL;
+ }
+
+ const vpx_codec_cx_pkt_t *pkt = NULL;
+ vpx_codec_iter_t iter = NULL;
+ block_t *p_out = NULL;
+ while ((pkt = vpx_codec_get_cx_data(ctx, &iter)) != NULL)
+ {
+ if (pkt->kind == VPX_CODEC_CX_FRAME_PKT)
+ {
+ int keyframe = pkt->data.frame.flags & VPX_FRAME_IS_KEY;
+ block_t *p_block = block_Alloc(pkt->data.frame.sz);
+
+ memcpy(p_block->p_buffer, pkt->data.frame.buf, pkt->data.frame.sz);
+ p_block->i_dts = p_block->i_pts = pkt->data.frame.pts;
+ if (keyframe)
+ p_block->i_flags |= BLOCK_FLAG_TYPE_I;
+ block_ChainAppend(&p_out, p_block);
+ }
+ }
+ vpx_img_free(&img);
+ return p_out;
+}
+
+/*****************************************************************************
+ * CloseEncoder: encoder destruction
+ *****************************************************************************/
+static void CloseEncoder(vlc_object_t *p_this)
+{
+ encoder_t *p_enc = (encoder_t *)p_this;
+ encoder_sys_t *p_sys = p_enc->p_sys;
+ if (vpx_codec_destroy(&p_sys->ctx))
+ VPX_ERR(p_this, &p_sys->ctx, "Failed to destroy codec: %s (%s)");
+ free(p_sys);
+}
+
+#endif /* ENABLE_SOUT */
--
2.7.0
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