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gstreamer/gst/vaapi/gstvaapidecode.c
Gwenole Beauchesne cafb25c4d1 vaapidecode: add support for VideoAlignment bufferpool option. 
Always add VideoAlignment bufferpool option if the downstream element
expects its own pool to be used but does not offer it through a proper
propose_allocation() implementation for instance, and that the ALLOCATION
query does not expose the availability of the Video Meta API.

This fixes propagation of video buffer stride information to Firefox.
2014-07-25 15:52:06 +02:00

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/*
* gstvaapidecode.c - VA-API video decoder
*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
* Author: Gwenole Beauchesne <gwenole.beauchesne@splitted-desktop.com>
* Copyright (C) 2011-2014 Intel Corporation
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
*
* 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 <gst/vaapi/gstvaapidisplay.h>
#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 <gst/vaapi/gstvaapidecoder_h264.h>
#include <gst/vaapi/gstvaapidecoder_jpeg.h>
#include <gst/vaapi/gstvaapidecoder_mpeg2.h>
#include <gst/vaapi/gstvaapidecoder_mpeg4.h>
#include <gst/vaapi/gstvaapidecoder_vc1.h>
#include <gst/vaapi/gstvaapidecoder_vp8.h>
#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);
g_assert(decode->decoder == decoder);
gst_vaapidecode_update_src_caps(decode, codec_state);
gst_video_decoder_negotiate(vdec);
}
static inline gboolean
gst_vaapidecode_update_sink_caps(GstVaapiDecode *decode, GstCaps *caps)
{
gst_caps_replace(&decode->sinkpad_caps, caps);
return TRUE;
}
#if GST_CHECK_VERSION(1,1,0)
static void
gst_vaapidecode_video_info_change_format(GstVideoInfo *info,
GstVideoFormat format, guint width, guint height)
{
GstVideoInfo vi = *info;
gst_video_info_set_format (info, format, width, height);
info->interlace_mode = vi.interlace_mode;
info->flags = vi.flags;
info->views = vi.views;
info->par_n = vi.par_n;
info->par_d = vi.par_d;
info->fps_n = vi.fps_n;
info->fps_d = vi.fps_d;
}
#endif
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)
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_vaapidecode_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_vaapidecode_video_info_change_format(&vis, out_format,
GST_VIDEO_INFO_WIDTH(vi), GST_VIDEO_INFO_HEIGHT(vi));
#if GST_CHECK_VERSION(1,3,0)
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);
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:
{
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:
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_ERROR("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_ERROR("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 %d)", 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:
ret = GST_FLOW_ERROR;
break;
}
decode->decoder_loop_status = ret;
GST_VIDEO_DECODER_STREAM_UNLOCK(vdec);
if (ret == GST_FLOW_OK)
return;
/* 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;
}
/* 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 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 (!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() */
GST_VIDEO_DECODER_STREAM_UNLOCK(vdec);
g_mutex_lock(&decode->decoder_mutex);
decode->decoder_finish = TRUE;
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);
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;
GstBufferPool *pool;
GstStructure *config;
GstVideoInfo vi;
guint size, min, max;
gboolean need_pool, update_pool;
gboolean has_video_meta = FALSE;
gboolean has_video_alignment = FALSE;
GstVideoCodecState *state;
#if GST_CHECK_VERSION(1,1,0) && USE_GLX
gboolean has_texture_upload_meta = FALSE;
GstCapsFeatures *features, *features2;
#endif
gst_query_parse_allocation(query, &caps, &need_pool);
if (!caps)
goto error_no_caps;
state = gst_video_decoder_get_output_state(vdec);
decode->has_texture_upload_meta = FALSE;
has_video_meta = gst_query_find_allocation_meta(query, GST_VIDEO_META_API_TYPE, NULL);
#if GST_CHECK_VERSION(1,1,0) && USE_GLX
if (has_video_meta)
decode->has_texture_upload_meta = gst_query_find_allocation_meta(query,
GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, NULL);
features = gst_caps_get_features(state->caps, 0);
features2 = gst_caps_features_new(GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META, NULL);
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;
/* Update src caps if feature is not handled downstream */
if (!decode->has_texture_upload_meta &&
gst_caps_features_is_equal(features, features2))
gst_vaapidecode_update_src_caps (decode, state);
else if (has_texture_upload_meta &&
!gst_caps_features_is_equal(features, features2)) {
gst_video_info_set_format(&state->info, GST_VIDEO_FORMAT_RGBA,
state->info.width,
state->info.height);
gst_vaapidecode_update_src_caps(decode, state);
}
gst_caps_features_free(features2);
#endif
gst_video_codec_state_unref(state);
gst_video_info_init(&vi);
gst_video_info_from_caps(&vi, caps);
if (GST_VIDEO_INFO_FORMAT(&vi) == GST_VIDEO_FORMAT_ENCODED)
gst_video_info_set_format(&vi, GST_VIDEO_FORMAT_I420,
GST_VIDEO_INFO_WIDTH(&vi), GST_VIDEO_INFO_HEIGHT(&vi));
g_return_val_if_fail(GST_VAAPI_PLUGIN_BASE_DISPLAY(decode) != NULL, FALSE);
if (gst_query_get_n_allocation_pools(query) > 0) {
gst_query_parse_nth_allocation_pool(query, 0, &pool, &size, &min, &max);
size = MAX(size, vi.size);
update_pool = TRUE;
/* Check whether downstream element proposed a bufferpool but did
not provide a correct propose_allocation() implementation */
has_video_alignment = gst_buffer_pool_has_option(pool,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
}
else {
pool = NULL;
size = vi.size;
min = max = 0;
update_pool = FALSE;
}
if (!pool || !gst_buffer_pool_has_option(pool,
GST_BUFFER_POOL_OPTION_VAAPI_VIDEO_META)) {
GST_INFO("no pool or doesn't support GstVaapiVideoMeta, "
"making new pool");
if (pool)
gst_object_unref(pool);
pool = gst_vaapi_video_buffer_pool_new(
GST_VAAPI_PLUGIN_BASE_DISPLAY(decode));
if (!pool)
goto error_create_pool;
config = gst_buffer_pool_get_config(pool);
gst_buffer_pool_config_set_params(config, caps, size, min, max);
gst_buffer_pool_config_add_option(config,
GST_BUFFER_POOL_OPTION_VAAPI_VIDEO_META);
gst_buffer_pool_set_config(pool, config);
}
if (has_video_meta) {
config = gst_buffer_pool_get_config(pool);
gst_buffer_pool_config_add_option(config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
#if GST_CHECK_VERSION(1,1,0) && USE_GLX
if (decode->has_texture_upload_meta)
gst_buffer_pool_config_add_option(config,
GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
#endif
gst_buffer_pool_set_config(pool, config);
}
else if (has_video_alignment) {
config = gst_buffer_pool_get_config(pool);
gst_buffer_pool_config_add_option(config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
gst_buffer_pool_set_config(pool, config);
}
if (update_pool)
gst_query_set_nth_allocation_pool(query, 0, pool, size, min, max);
else
gst_query_add_allocation_pool(query, pool, size, min, max);
if (pool)
gst_object_unref(pool);
return TRUE;
/* ERRORS */
error_no_caps:
{
GST_ERROR("no caps specified");
return FALSE;
}
error_create_pool:
{
GST_ERROR("failed to create buffer pool");
return FALSE;
}
}
#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_vaapidecode_update_src_caps(decode, state))
return FALSE;
if (!gst_video_decoder_negotiate(vdec))
return FALSE;
if (!gst_vaapi_plugin_base_set_caps(plugin, decode->sinkpad_caps,
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:
gst_pad_stop_task(GST_VAAPI_PLUGIN_BASE_SRC_PAD(decode));
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 <gwenole.beauchesne@intel.com>");
/* 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;
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;
allowed_caps = gst_caps_merge(allowed_caps, caps);
}
decode->allowed_caps = 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 * const caps = gst_vaapidecode_get_caps(pad);
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
res = GST_PAD_QUERY_FUNCTION_CALL(plugin->srcpad_query, pad,
parent, query);
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_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_vaapidecode_query);
}
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