/* * gstvaapidecode.c - VA-API video decoder * * Copyright (C) 2010-2011 Splitted-Desktop Systems * Author: Gwenole Beauchesne * Copyright (C) 2011-2014 Intel Corporation * Author: Gwenole Beauchesne * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation; either version 2.1 * of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301 USA */ /** * SECTION:gstvaapidecode * @short_description: A VA-API based video decoder * * vaapidecode decodes from raw bitstreams to surfaces suitable for * the vaapisink element. */ #include "gst/vaapi/sysdeps.h" #include #include "gstvaapidecode.h" #include "gstvaapipluginutil.h" #include "gstvaapivideobuffer.h" #if GST_CHECK_VERSION(1,1,0) && USE_GLX #include "gstvaapivideometa_texture.h" #endif #if GST_CHECK_VERSION(1,0,0) #include "gstvaapivideobufferpool.h" #include "gstvaapivideomemory.h" #endif #include #include #include #include #include #include #define GST_PLUGIN_NAME "vaapidecode" #define GST_PLUGIN_DESC "A VA-API based video decoder" #define GST_VAAPI_DECODE_FLOW_PARSE_DATA GST_FLOW_CUSTOM_SUCCESS_2 GST_DEBUG_CATEGORY_STATIC(gst_debug_vaapidecode); #define GST_CAT_DEFAULT gst_debug_vaapidecode /* Default templates */ #define GST_CAPS_CODEC(CODEC) CODEC "; " static const char gst_vaapidecode_sink_caps_str[] = GST_CAPS_CODEC("video/mpeg, mpegversion=2, systemstream=(boolean)false") GST_CAPS_CODEC("video/mpeg, mpegversion=4") GST_CAPS_CODEC("video/x-divx") GST_CAPS_CODEC("video/x-xvid") GST_CAPS_CODEC("video/x-h263") GST_CAPS_CODEC("video/x-h264") GST_CAPS_CODEC("video/x-wmv") GST_CAPS_CODEC("video/x-vp8") GST_CAPS_CODEC("image/jpeg") ; static const char gst_vaapidecode_src_caps_str[] = #if GST_CHECK_VERSION(1,1,0) GST_VIDEO_CAPS_MAKE_WITH_FEATURES( GST_CAPS_FEATURE_MEMORY_VAAPI_SURFACE, "{ ENCODED, I420, YV12, NV12 }") ";" GST_VIDEO_CAPS_MAKE_WITH_FEATURES( GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META, "RGBA") ";" GST_VIDEO_CAPS_MAKE("{ I420, YV12, NV12 }"); #else GST_VAAPI_SURFACE_CAPS; #endif static GstStaticPadTemplate gst_vaapidecode_sink_factory = GST_STATIC_PAD_TEMPLATE( "sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS(gst_vaapidecode_sink_caps_str)); static GstStaticPadTemplate gst_vaapidecode_src_factory = GST_STATIC_PAD_TEMPLATE( "src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS(gst_vaapidecode_src_caps_str)); G_DEFINE_TYPE_WITH_CODE( GstVaapiDecode, gst_vaapidecode, GST_TYPE_VIDEO_DECODER, GST_VAAPI_PLUGIN_BASE_INIT_INTERFACES) static gboolean gst_vaapidecode_update_src_caps(GstVaapiDecode *decode, const GstVideoCodecState *ref_state); static void gst_vaapi_decoder_state_changed(GstVaapiDecoder *decoder, const GstVideoCodecState *codec_state, gpointer user_data) { GstVaapiDecode * const decode = GST_VAAPIDECODE(user_data); GstVideoDecoder * const vdec = GST_VIDEO_DECODER(decode); GstVaapiPluginBase * const plugin = GST_VAAPI_PLUGIN_BASE(vdec); g_assert(decode->decoder == decoder); if (gst_vaapidecode_update_src_caps(decode, codec_state)) { if (!gst_video_decoder_negotiate(vdec)) return; if (!gst_vaapi_plugin_base_set_caps(plugin, NULL, decode->srcpad_caps)) return; } } static inline gboolean gst_vaapidecode_update_sink_caps(GstVaapiDecode *decode, GstCaps *caps) { gst_caps_replace(&decode->sinkpad_caps, caps); return TRUE; } static gboolean gst_vaapidecode_update_src_caps(GstVaapiDecode *decode, const GstVideoCodecState *ref_state) { GstVideoDecoder * const vdec = GST_VIDEO_DECODER(decode); GstVideoCodecState *state; GstVideoInfo *vi, vis; GstVideoFormat format, out_format; #if GST_CHECK_VERSION(1,1,0) GstCapsFeatures *features = NULL; GstVaapiCapsFeature feature; feature = gst_vaapi_find_preferred_caps_feature( GST_VIDEO_DECODER_SRC_PAD(vdec), GST_VIDEO_INFO_FORMAT(&ref_state->info)); #endif format = GST_VIDEO_INFO_FORMAT(&ref_state->info); state = gst_video_decoder_set_output_state(vdec, format, ref_state->info.width, ref_state->info.height, (GstVideoCodecState *)ref_state); if (!state || state->info.width == 0 || state->info.height == 0) return FALSE; vi = &state->info; out_format = format; if (format == GST_VIDEO_FORMAT_ENCODED) { out_format = GST_VIDEO_FORMAT_I420; gst_video_info_init(&vis); gst_video_info_set_format(&vis, out_format, GST_VIDEO_INFO_WIDTH(vi), GST_VIDEO_INFO_HEIGHT(vi)); vi->size = vis.size; } gst_video_codec_state_unref(state); #if GST_CHECK_VERSION(1,1,0) vis = *vi; switch (feature) { case GST_VAAPI_CAPS_FEATURE_GL_TEXTURE_UPLOAD_META: gst_video_info_change_format(&vis, GST_VIDEO_FORMAT_RGBA, GST_VIDEO_INFO_WIDTH(vi), GST_VIDEO_INFO_HEIGHT(vi)); features = gst_caps_features_new( GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META, NULL); break; default: if (format == GST_VIDEO_FORMAT_ENCODED) { /* XXX: this is a workaround until auto-plugging is fixed when format=ENCODED + memory:VASurface caps feature are provided. Meanwhile, providing a random format here works but this is a terribly wrong thing per se. */ gst_video_info_change_format(&vis, out_format, GST_VIDEO_INFO_WIDTH(vi), GST_VIDEO_INFO_HEIGHT(vi)); #if GST_CHECK_VERSION(1,5,0) if (feature == GST_VAAPI_CAPS_FEATURE_VAAPI_SURFACE) features = gst_caps_features_new( GST_CAPS_FEATURE_MEMORY_VAAPI_SURFACE, NULL); #endif } break; } state->caps = gst_video_info_to_caps(&vis); if (features) gst_caps_set_features(state->caps, 0, features); #else /* XXX: gst_video_info_to_caps() from GStreamer 0.10 does not reconstruct suitable caps for "encoded" video formats */ state->caps = gst_caps_from_string(GST_VAAPI_SURFACE_CAPS_NAME); if (!state->caps) return FALSE; gst_caps_set_simple(state->caps, "type", G_TYPE_STRING, "vaapi", "opengl", G_TYPE_BOOLEAN, USE_GLX, "width", G_TYPE_INT, vi->width, "height", G_TYPE_INT, vi->height, "framerate", GST_TYPE_FRACTION, vi->fps_n, vi->fps_d, "pixel-aspect-ratio", GST_TYPE_FRACTION, vi->par_n, vi->par_d, NULL); gst_caps_set_interlaced(state->caps, vi); #endif gst_caps_replace(&decode->srcpad_caps, state->caps); return TRUE; } static void gst_vaapidecode_release(GstVaapiDecode *decode) { g_mutex_lock(&decode->decoder_mutex); g_cond_signal(&decode->decoder_ready); g_mutex_unlock(&decode->decoder_mutex); } static GstFlowReturn gst_vaapidecode_decode_frame(GstVideoDecoder *vdec, GstVideoCodecFrame *frame) { GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec); GstVaapiDecoderStatus status; GstFlowReturn ret; /* Decode current frame */ for (;;) { status = gst_vaapi_decoder_decode(decode->decoder, frame); if (status == GST_VAAPI_DECODER_STATUS_ERROR_NO_SURFACE) { GST_VIDEO_DECODER_STREAM_UNLOCK(vdec); g_mutex_lock(&decode->decoder_mutex); if (gst_vaapi_decoder_check_status (decode->decoder) == GST_VAAPI_DECODER_STATUS_ERROR_NO_SURFACE) g_cond_wait(&decode->decoder_ready, &decode->decoder_mutex); g_mutex_unlock(&decode->decoder_mutex); GST_VIDEO_DECODER_STREAM_LOCK(vdec); if (decode->decoder_loop_status < 0) goto error_decode_loop; continue; } if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) goto error_decode; break; } /* Try to report back early any error that occured in the decode task */ GST_VIDEO_DECODER_STREAM_UNLOCK(vdec); GST_VIDEO_DECODER_STREAM_LOCK(vdec); return decode->decoder_loop_status; /* ERRORS */ error_decode_loop: { if (decode->decoder_loop_status != GST_FLOW_FLUSHING) GST_ERROR("decode loop error %d", decode->decoder_loop_status); gst_video_decoder_drop_frame(vdec, frame); return decode->decoder_loop_status; } error_decode: { GST_ERROR("decode error %d", status); switch (status) { case GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CODEC: case GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_PROFILE: case GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CHROMA_FORMAT: ret = GST_FLOW_NOT_SUPPORTED; break; default: GST_ELEMENT_ERROR (vdec, STREAM, DECODE, ("Decoding error"), ("Decode error %d", status)); ret = GST_FLOW_ERROR; break; } gst_video_decoder_drop_frame(vdec, frame); return ret; } } static GstFlowReturn gst_vaapidecode_push_decoded_frame(GstVideoDecoder *vdec, GstVideoCodecFrame *out_frame) { GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec); GstVaapiSurfaceProxy *proxy; GstFlowReturn ret; #if GST_CHECK_VERSION(1,0,0) const GstVaapiRectangle *crop_rect; GstVaapiVideoMeta *meta; guint flags; #endif if (!GST_VIDEO_CODEC_FRAME_IS_DECODE_ONLY(out_frame)) { proxy = gst_video_codec_frame_get_user_data(out_frame); gst_vaapi_surface_proxy_set_destroy_notify(proxy, (GDestroyNotify)gst_vaapidecode_release, decode); #if GST_CHECK_VERSION(1,0,0) ret = gst_video_decoder_allocate_output_frame(vdec, out_frame); if (ret != GST_FLOW_OK) goto error_create_buffer; meta = gst_buffer_get_vaapi_video_meta(out_frame->output_buffer); if (!meta) goto error_get_meta; gst_vaapi_video_meta_set_surface_proxy(meta, proxy); flags = gst_vaapi_surface_proxy_get_flags(proxy); if (flags & GST_VAAPI_SURFACE_PROXY_FLAG_INTERLACED) { guint out_flags = GST_VIDEO_BUFFER_FLAG_INTERLACED; if (flags & GST_VAAPI_SURFACE_PROXY_FLAG_TFF) out_flags |= GST_VIDEO_BUFFER_FLAG_TFF; if (flags & GST_VAAPI_SURFACE_PROXY_FLAG_RFF) out_flags |= GST_VIDEO_BUFFER_FLAG_RFF; if (flags & GST_VAAPI_SURFACE_PROXY_FLAG_ONEFIELD) out_flags |= GST_VIDEO_BUFFER_FLAG_ONEFIELD; GST_BUFFER_FLAG_SET(out_frame->output_buffer, out_flags); } crop_rect = gst_vaapi_surface_proxy_get_crop_rect(proxy); if (crop_rect) { GstVideoCropMeta * const crop_meta = gst_buffer_add_video_crop_meta(out_frame->output_buffer); if (crop_meta) { crop_meta->x = crop_rect->x; crop_meta->y = crop_rect->y; crop_meta->width = crop_rect->width; crop_meta->height = crop_rect->height; } } #if GST_CHECK_VERSION(1,1,0) && USE_GLX if (decode->has_texture_upload_meta) gst_buffer_ensure_texture_upload_meta(out_frame->output_buffer); #endif #else out_frame->output_buffer = gst_vaapi_video_buffer_new_with_surface_proxy(proxy); if (!out_frame->output_buffer) goto error_create_buffer; #endif } ret = gst_video_decoder_finish_frame(vdec, out_frame); if (ret != GST_FLOW_OK) goto error_commit_buffer; gst_video_codec_frame_unref(out_frame); return GST_FLOW_OK; /* ERRORS */ error_create_buffer: { const GstVaapiID surface_id = gst_vaapi_surface_get_id(GST_VAAPI_SURFACE_PROXY_SURFACE(proxy)); GST_ELEMENT_ERROR(vdec, STREAM, FAILED, ("Failed to create sink buffer"), ("video sink failed to create video buffer for proxy'ed " "surface %" GST_VAAPI_ID_FORMAT, GST_VAAPI_ID_ARGS(surface_id))); gst_video_decoder_drop_frame(vdec, out_frame); gst_video_codec_frame_unref(out_frame); return GST_FLOW_ERROR; } #if GST_CHECK_VERSION(1,0,0) error_get_meta: { GST_ELEMENT_ERROR(vdec, STREAM, FAILED, ("Failed to get vaapi video meta attached to video buffer"), ("Failed to get vaapi video meta attached to video buffer")); gst_video_decoder_drop_frame(vdec, out_frame); gst_video_codec_frame_unref(out_frame); return GST_FLOW_ERROR; } #endif error_commit_buffer: { if (ret != GST_FLOW_FLUSHING) GST_ERROR("video sink rejected the video buffer (error: %s [%d])", gst_flow_get_name (ret), ret); gst_video_codec_frame_unref(out_frame); return ret; } } static GstFlowReturn gst_vaapidecode_handle_frame(GstVideoDecoder *vdec, GstVideoCodecFrame *frame) { GstFlowReturn ret; /* Make sure to release the base class stream lock so that decode loop can call gst_video_decoder_finish_frame() without blocking */ GST_VIDEO_DECODER_STREAM_UNLOCK(vdec); ret = gst_vaapidecode_decode_frame(vdec, frame); GST_VIDEO_DECODER_STREAM_LOCK(vdec); return ret; } static void gst_vaapidecode_decode_loop(GstVaapiDecode *decode) { GstVideoDecoder * const vdec = GST_VIDEO_DECODER(decode); GstVaapiDecoderStatus status; GstVideoCodecFrame *out_frame; GstFlowReturn ret; status = gst_vaapi_decoder_get_frame_with_timeout(decode->decoder, &out_frame, 100000); GST_VIDEO_DECODER_STREAM_LOCK(vdec); switch (status) { case GST_VAAPI_DECODER_STATUS_SUCCESS: ret = gst_vaapidecode_push_decoded_frame(vdec, out_frame); break; case GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA: ret = GST_VIDEO_DECODER_FLOW_NEED_DATA; break; default: GST_ELEMENT_ERROR (vdec, STREAM, DECODE, ("Decoding failed"), ("Unknown decoding error")); ret = GST_FLOW_ERROR; break; } decode->decoder_loop_status = ret; GST_VIDEO_DECODER_STREAM_UNLOCK(vdec); /* If invoked from gst_vaapidecode_finish(), then return right away no matter the errors, or the GstVaapiDecoder needs further data to complete decoding (there no more data to feed in) */ if (decode->decoder_finish) { g_mutex_lock(&decode->decoder_mutex); g_cond_signal(&decode->decoder_finish_done); g_mutex_unlock(&decode->decoder_mutex); return; } if (ret == GST_FLOW_OK) return; /* Suspend the task if an error occurred */ if (ret != GST_VIDEO_DECODER_FLOW_NEED_DATA) gst_pad_pause_task(GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode)); } static gboolean gst_vaapidecode_flush(GstVideoDecoder *vdec) { GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec); GstVaapiDecoderStatus status; if (!decode->decoder) return TRUE; /* If there is something in GstVideoDecoder's output adapter, then submit the frame for decoding */ if (decode->current_frame_size) { gst_video_decoder_have_frame(vdec); decode->current_frame_size = 0; } status = gst_vaapi_decoder_flush(decode->decoder); if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) goto error_flush; return TRUE; /* ERRORS */ error_flush: { GST_ERROR("failed to flush decoder (status %d)", status); return FALSE; } } static GstFlowReturn gst_vaapidecode_finish(GstVideoDecoder *vdec) { GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec); GstFlowReturn ret = GST_FLOW_OK; if (!decode->decoder) return GST_FLOW_OK; if (!gst_vaapidecode_flush(vdec)) ret = GST_FLOW_OK; /* Make sure the decode loop function has a chance to return, thus possibly unlocking gst_video_decoder_finish_frame() */ if (decode->decoder_loop_status == GST_FLOW_OK) { decode->decoder_finish = TRUE; GST_VIDEO_DECODER_STREAM_UNLOCK(vdec); g_mutex_lock(&decode->decoder_mutex); while (decode->decoder_loop_status == GST_FLOW_OK) g_cond_wait(&decode->decoder_finish_done, &decode->decoder_mutex); g_mutex_unlock(&decode->decoder_mutex); gst_pad_stop_task(GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode)); GST_VIDEO_DECODER_STREAM_LOCK(vdec); decode->decoder_finish = FALSE; gst_pad_start_task(GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode), (GstTaskFunction)gst_vaapidecode_decode_loop, decode, NULL); } return ret; } #if GST_CHECK_VERSION(1,0,0) static gboolean gst_vaapidecode_decide_allocation(GstVideoDecoder *vdec, GstQuery *query) { GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec); GstCaps *caps = NULL; gboolean need_pool; GstVideoCodecState *state; GstVaapiCapsFeature feature; gst_query_parse_allocation(query, &caps, &need_pool); decode->has_texture_upload_meta = FALSE; #if GST_CHECK_VERSION(1,1,0) && USE_GLX decode->has_texture_upload_meta = gst_vaapi_find_preferred_caps_feature(GST_VIDEO_DECODER_SRC_PAD(vdec), GST_VIDEO_FORMAT_ENCODED) == GST_VAAPI_CAPS_FEATURE_GL_TEXTURE_UPLOAD_META; #endif feature = decode->has_texture_upload_meta ? GST_VAAPI_CAPS_FEATURE_GL_TEXTURE_UPLOAD_META : GST_VAAPI_CAPS_FEATURE_VAAPI_SURFACE; /* Update src caps if feature is not handled downstream */ state = gst_video_decoder_get_output_state(vdec); if (!gst_caps_is_always_compatible(caps, state->caps)) { if (decode->has_texture_upload_meta) gst_video_info_change_format(&state->info, GST_VIDEO_FORMAT_RGBA, GST_VIDEO_INFO_WIDTH(&state->info), GST_VIDEO_INFO_HEIGHT(&state->info)); gst_vaapidecode_update_src_caps(decode, state); } gst_video_codec_state_unref(state); return gst_vaapi_plugin_base_decide_allocation(GST_VAAPI_PLUGIN_BASE(vdec), query, feature); } #endif static inline gboolean gst_vaapidecode_ensure_display(GstVaapiDecode *decode) { return gst_vaapi_plugin_base_ensure_display(GST_VAAPI_PLUGIN_BASE(decode)); } static inline guint gst_vaapi_codec_from_caps(GstCaps *caps) { return gst_vaapi_profile_get_codec(gst_vaapi_profile_from_caps(caps)); } static gboolean gst_vaapidecode_create(GstVaapiDecode *decode, GstCaps *caps) { GstVaapiDisplay *dpy; if (!gst_vaapidecode_ensure_display(decode)) return FALSE; dpy = GST_VAAPI_PLUGIN_BASE_DISPLAY(decode); switch (gst_vaapi_codec_from_caps(caps)) { case GST_VAAPI_CODEC_MPEG2: decode->decoder = gst_vaapi_decoder_mpeg2_new(dpy, caps); break; case GST_VAAPI_CODEC_MPEG4: case GST_VAAPI_CODEC_H263: decode->decoder = gst_vaapi_decoder_mpeg4_new(dpy, caps); break; case GST_VAAPI_CODEC_H264: decode->decoder = gst_vaapi_decoder_h264_new(dpy, caps); /* Set the stream buffer alignment for better optimizations */ if (decode->decoder && caps) { GstStructure * const structure = gst_caps_get_structure(caps, 0); const gchar *str = NULL; if ((str = gst_structure_get_string(structure, "alignment"))) { GstVaapiStreamAlignH264 alignment; if (g_strcmp0(str, "au") == 0) alignment = GST_VAAPI_STREAM_ALIGN_H264_AU; else if (g_strcmp0(str, "nal") == 0) alignment = GST_VAAPI_STREAM_ALIGN_H264_NALU; else alignment = GST_VAAPI_STREAM_ALIGN_H264_NONE; gst_vaapi_decoder_h264_set_alignment( GST_VAAPI_DECODER_H264(decode->decoder), alignment); } } break; case GST_VAAPI_CODEC_WMV3: case GST_VAAPI_CODEC_VC1: decode->decoder = gst_vaapi_decoder_vc1_new(dpy, caps); break; #if USE_JPEG_DECODER case GST_VAAPI_CODEC_JPEG: decode->decoder = gst_vaapi_decoder_jpeg_new(dpy, caps); break; #endif #if USE_VP8_DECODER case GST_VAAPI_CODEC_VP8: decode->decoder = gst_vaapi_decoder_vp8_new(dpy, caps); break; #endif default: decode->decoder = NULL; break; } if (!decode->decoder) return FALSE; gst_vaapi_decoder_set_codec_state_changed_func(decode->decoder, gst_vaapi_decoder_state_changed, decode); decode->decoder_caps = gst_caps_ref(caps); return gst_pad_start_task(GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode), (GstTaskFunction)gst_vaapidecode_decode_loop, decode, NULL); } static void gst_vaapidecode_destroy(GstVaapiDecode *decode) { gst_pad_stop_task(GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode)); gst_vaapi_decoder_replace(&decode->decoder, NULL); gst_caps_replace(&decode->decoder_caps, NULL); gst_vaapidecode_release(decode); } static gboolean gst_vaapidecode_reset_full(GstVaapiDecode *decode, GstCaps *caps, gboolean hard) { GstVaapiCodec codec; decode->has_texture_upload_meta = FALSE; /* Reset tracked frame size */ decode->current_frame_size = 0; /* Reset timers if hard reset was requested (e.g. seek) */ if (hard) { GstVideoDecoder * const vdec = GST_VIDEO_DECODER(decode); GstVideoCodecFrame *out_frame = NULL; gst_vaapi_decoder_flush(decode->decoder); GST_VIDEO_DECODER_STREAM_UNLOCK(vdec); gst_pad_stop_task(GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode)); GST_VIDEO_DECODER_STREAM_LOCK(vdec); decode->decoder_loop_status = GST_FLOW_OK; /* Purge all decoded frames as we don't need them (e.g. seek) */ while (gst_vaapi_decoder_get_frame_with_timeout(decode->decoder, &out_frame, 0) == GST_VAAPI_DECODER_STATUS_SUCCESS) { gst_video_codec_frame_unref(out_frame); out_frame = NULL; } } /* Only reset decoder if codec type changed */ else if (decode->decoder && decode->decoder_caps) { if (gst_caps_is_always_compatible(caps, decode->decoder_caps)) return TRUE; codec = gst_vaapi_codec_from_caps(caps); if (codec == gst_vaapi_decoder_get_codec(decode->decoder)) return TRUE; } gst_vaapidecode_destroy(decode); return gst_vaapidecode_create(decode, caps); } static void gst_vaapidecode_finalize(GObject *object) { GstVaapiDecode * const decode = GST_VAAPIDECODE(object); gst_caps_replace(&decode->sinkpad_caps, NULL); gst_caps_replace(&decode->srcpad_caps, NULL); gst_caps_replace(&decode->allowed_caps, NULL); g_cond_clear(&decode->decoder_finish_done); g_cond_clear(&decode->decoder_ready); g_mutex_clear(&decode->decoder_mutex); gst_vaapi_plugin_base_finalize(GST_VAAPI_PLUGIN_BASE(object)); G_OBJECT_CLASS(gst_vaapidecode_parent_class)->finalize(object); } static gboolean gst_vaapidecode_open(GstVideoDecoder *vdec) { GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec); GstVaapiDisplay * const old_display = GST_VAAPI_PLUGIN_BASE_DISPLAY(decode); gboolean success; if (!gst_vaapi_plugin_base_open(GST_VAAPI_PLUGIN_BASE(decode))) return FALSE; /* Let GstVideoContext ask for a proper display to its neighbours */ /* Note: steal old display that may be allocated from get_caps() so that to retain a reference to it, thus avoiding extra initialization steps if we turn out to simply re-use the existing (cached) VA display */ GST_VAAPI_PLUGIN_BASE_DISPLAY(decode) = NULL; success = gst_vaapidecode_ensure_display(decode); if (old_display) gst_vaapi_display_unref(old_display); return success; } static gboolean gst_vaapidecode_close(GstVideoDecoder *vdec) { GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec); gst_vaapidecode_destroy(decode); gst_vaapi_plugin_base_close(GST_VAAPI_PLUGIN_BASE(decode)); return TRUE; } static gboolean gst_vaapidecode_reset(GstVideoDecoder *vdec, gboolean hard) { GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec); /* In GStreamer 1.0 context, this means a flush */ if (decode->decoder && !hard && !gst_vaapidecode_flush(vdec)) return FALSE; return gst_vaapidecode_reset_full(decode, decode->sinkpad_caps, hard); } static gboolean gst_vaapidecode_set_format(GstVideoDecoder *vdec, GstVideoCodecState *state) { GstVaapiPluginBase * const plugin = GST_VAAPI_PLUGIN_BASE(vdec); GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec); if (!gst_vaapidecode_update_sink_caps(decode, state->caps)) return FALSE; if (!gst_vaapi_plugin_base_set_caps(plugin, decode->sinkpad_caps, NULL)) return FALSE; if (gst_vaapidecode_update_src_caps(decode, state)) { if (!gst_video_decoder_negotiate(vdec)) return FALSE; if (!gst_vaapi_plugin_base_set_caps(plugin, NULL, decode->srcpad_caps)) return FALSE; } if (!gst_vaapidecode_reset_full(decode, decode->sinkpad_caps, FALSE)) return FALSE; return TRUE; } static GstFlowReturn gst_vaapidecode_parse_frame(GstVideoDecoder *vdec, GstVideoCodecFrame *frame, GstAdapter *adapter, gboolean at_eos) { GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec); GstVaapiDecoderStatus status; GstFlowReturn ret; guint got_unit_size; gboolean got_frame; status = gst_vaapi_decoder_parse(decode->decoder, frame, adapter, at_eos, &got_unit_size, &got_frame); switch (status) { case GST_VAAPI_DECODER_STATUS_SUCCESS: if (got_unit_size > 0) { gst_video_decoder_add_to_frame(vdec, got_unit_size); decode->current_frame_size += got_unit_size; } if (got_frame) { ret = gst_video_decoder_have_frame(vdec); decode->current_frame_size = 0; } else ret = GST_VAAPI_DECODE_FLOW_PARSE_DATA; break; case GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA: ret = GST_VIDEO_DECODER_FLOW_NEED_DATA; break; case GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CODEC: case GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_PROFILE: case GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CHROMA_FORMAT: GST_WARNING("parse error %d", status); ret = GST_FLOW_NOT_SUPPORTED; decode->current_frame_size = 0; break; default: GST_ERROR("parse error %d", status); ret = GST_FLOW_EOS; decode->current_frame_size = 0; break; } return ret; } static GstFlowReturn gst_vaapidecode_parse(GstVideoDecoder *vdec, GstVideoCodecFrame *frame, GstAdapter *adapter, gboolean at_eos) { GstFlowReturn ret; do { ret = gst_vaapidecode_parse_frame(vdec, frame, adapter, at_eos); } while (ret == GST_VAAPI_DECODE_FLOW_PARSE_DATA); return ret; } static GstStateChangeReturn gst_vaapidecode_change_state (GstElement * element, GstStateChange transition) { GstVaapiDecode * const decode = GST_VAAPIDECODE(element); switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_READY: g_mutex_lock(&decode->decoder_mutex); decode->decoder_finish = TRUE; g_cond_signal(&decode->decoder_finish_done); g_cond_signal(&decode->decoder_ready); g_mutex_unlock(&decode->decoder_mutex); gst_pad_stop_task(GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode)); decode->decoder_finish = FALSE; break; default: break; } return GST_ELEMENT_CLASS(gst_vaapidecode_parent_class)->change_state( element, transition); } static void gst_vaapidecode_class_init(GstVaapiDecodeClass *klass) { GObjectClass * const object_class = G_OBJECT_CLASS(klass); GstElementClass * const element_class = GST_ELEMENT_CLASS(klass); GstVideoDecoderClass * const vdec_class = GST_VIDEO_DECODER_CLASS(klass); GstPadTemplate *pad_template; GST_DEBUG_CATEGORY_INIT(gst_debug_vaapidecode, GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC); gst_vaapi_plugin_base_class_init(GST_VAAPI_PLUGIN_BASE_CLASS(klass)); object_class->finalize = gst_vaapidecode_finalize; element_class->change_state = GST_DEBUG_FUNCPTR(gst_vaapidecode_change_state); vdec_class->open = GST_DEBUG_FUNCPTR(gst_vaapidecode_open); vdec_class->close = GST_DEBUG_FUNCPTR(gst_vaapidecode_close); vdec_class->set_format = GST_DEBUG_FUNCPTR(gst_vaapidecode_set_format); vdec_class->reset = GST_DEBUG_FUNCPTR(gst_vaapidecode_reset); vdec_class->parse = GST_DEBUG_FUNCPTR(gst_vaapidecode_parse); vdec_class->handle_frame = GST_DEBUG_FUNCPTR(gst_vaapidecode_handle_frame); vdec_class->finish = GST_DEBUG_FUNCPTR(gst_vaapidecode_finish); #if GST_CHECK_VERSION(1,0,0) vdec_class->decide_allocation = GST_DEBUG_FUNCPTR(gst_vaapidecode_decide_allocation); #endif gst_element_class_set_static_metadata(element_class, "VA-API decoder", "Codec/Decoder/Video", GST_PLUGIN_DESC, "Gwenole Beauchesne "); /* sink pad */ pad_template = gst_static_pad_template_get(&gst_vaapidecode_sink_factory); gst_element_class_add_pad_template(element_class, pad_template); /* src pad */ pad_template = gst_static_pad_template_get(&gst_vaapidecode_src_factory); gst_element_class_add_pad_template(element_class, pad_template); } static gboolean gst_vaapidecode_ensure_allowed_caps(GstVaapiDecode *decode) { GstCaps *caps, *allowed_caps; GArray *profiles; guint i; if (decode->allowed_caps) return TRUE; if (!gst_vaapidecode_ensure_display(decode)) goto error_no_display; profiles = gst_vaapi_display_get_decode_profiles( GST_VAAPI_PLUGIN_BASE_DISPLAY(decode)); if (!profiles) goto error_no_profiles; allowed_caps = gst_caps_new_empty(); if (!allowed_caps) goto error_no_memory; for (i = 0; i < profiles->len; i++) { const GstVaapiProfile profile = g_array_index(profiles, GstVaapiProfile, i); const gchar *media_type_name; const gchar *profile_name; GstStructure *structure; media_type_name = gst_vaapi_profile_get_media_type_name(profile); if (!media_type_name) continue; caps = gst_caps_from_string(media_type_name); if (!caps) continue; structure = gst_caps_get_structure (caps, 0); profile_name = gst_vaapi_profile_get_name(profile); if (profile_name) gst_structure_set(structure, "profile", G_TYPE_STRING, profile_name, NULL); allowed_caps = gst_caps_merge(allowed_caps, caps); } decode->allowed_caps = gst_caps_simplify (allowed_caps); g_array_unref(profiles); return TRUE; /* ERRORS */ error_no_display: { GST_ERROR("failed to retrieve VA display"); return FALSE; } error_no_profiles: { GST_ERROR("failed to retrieve VA decode profiles"); return FALSE; } error_no_memory: { GST_ERROR("failed to allocate allowed-caps set"); g_array_unref(profiles); return FALSE; } } static GstCaps * gst_vaapidecode_get_caps(GstPad *pad) { GstVaapiDecode * const decode = GST_VAAPIDECODE(GST_OBJECT_PARENT(pad)); if (!gst_vaapidecode_ensure_allowed_caps(decode)) return gst_caps_new_empty(); return gst_caps_ref(decode->allowed_caps); } static gboolean gst_vaapidecode_query(GST_PAD_QUERY_FUNCTION_ARGS) { GstVaapiDecode * const decode = GST_VAAPIDECODE(gst_pad_get_parent_element(pad)); GstVaapiPluginBase * const plugin = GST_VAAPI_PLUGIN_BASE(decode); gboolean res; GST_INFO_OBJECT(decode, "query type %s", GST_QUERY_TYPE_NAME(query)); if (gst_vaapi_reply_to_query(query, plugin->display)) { GST_DEBUG("sharing display %p", plugin->display); res = TRUE; } else if (GST_PAD_IS_SINK(pad)) { switch (GST_QUERY_TYPE(query)) { #if GST_CHECK_VERSION(1,0,0) case GST_QUERY_CAPS: { GstCaps *filter, *caps = NULL; gst_query_parse_caps(query, &filter); caps = gst_vaapidecode_get_caps(pad); if (filter) { GstCaps *tmp = caps; caps = gst_caps_intersect_full(filter, tmp, GST_CAPS_INTERSECT_FIRST); gst_caps_unref(tmp); } GST_DEBUG_OBJECT(decode, "Returning sink caps %" GST_PTR_FORMAT, caps); gst_query_set_caps_result(query, caps); gst_caps_unref(caps); res = TRUE; break; } #endif default: res = GST_PAD_QUERY_FUNCTION_CALL(plugin->sinkpad_query, pad, parent, query); break; } } else { switch (GST_QUERY_TYPE(query)) { #if GST_CHECK_VERSION(1,0,0) case GST_QUERY_CAPS: { GstCaps *filter, *caps = NULL; gst_query_parse_caps(query, &filter); caps = gst_pad_get_pad_template_caps(pad); if (filter) { GstCaps *tmp = caps; caps = gst_caps_intersect_full(filter, tmp, GST_CAPS_INTERSECT_FIRST); gst_caps_unref(tmp); } GST_DEBUG_OBJECT(decode, "Returning src caps %" GST_PTR_FORMAT, caps); gst_query_set_caps_result(query, caps); gst_caps_unref(caps); res = TRUE; break; } #endif default: res = GST_PAD_QUERY_FUNCTION_CALL(plugin->srcpad_query, pad, parent, query); break; } } gst_object_unref(decode); return res; } static void gst_vaapidecode_init(GstVaapiDecode *decode) { GstVideoDecoder * const vdec = GST_VIDEO_DECODER(decode); GstPad *pad; gst_vaapi_plugin_base_init(GST_VAAPI_PLUGIN_BASE(decode), GST_CAT_DEFAULT); decode->decoder = NULL; decode->decoder_caps = NULL; decode->allowed_caps = NULL; decode->decoder_loop_status = GST_FLOW_OK; g_mutex_init(&decode->decoder_mutex); g_cond_init(&decode->decoder_ready); g_cond_init(&decode->decoder_finish_done); gst_video_decoder_set_packetized(vdec, FALSE); /* Pad through which data comes in to the element */ pad = GST_VAAPI_PLUGIN_BASE_SINK_PAD(decode); gst_pad_set_query_function(pad, GST_DEBUG_FUNCPTR(gst_vaapidecode_query)); #if !GST_CHECK_VERSION(1,0,0) gst_pad_set_getcaps_function(pad, gst_vaapidecode_get_caps); #endif /* Pad through which data goes out of the element */ pad = GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode); gst_pad_set_query_function(pad, GST_DEBUG_FUNCPTR(gst_vaapidecode_query)); }