gstreamer/ext/vpx/gstvpxdec.c

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/* VPX
* Copyright (C) 2006 David Schleef <ds@schleef.org>
* Copyright (C) 2008,2009,2010 Entropy Wave Inc
* Copyright (C) 2010-2012 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#if defined(HAVE_VP8_DECODER) || defined(HAVE_VP9_DECODER)
#include <string.h>
#include "gstvpxdec.h"
#include "gstvp8utils.h"
#include <gst/video/gstvideometa.h>
#include <gst/video/gstvideopool.h>
GST_DEBUG_CATEGORY_STATIC (gst_vpxdec_debug);
#define GST_CAT_DEFAULT gst_vpxdec_debug
#define DEFAULT_POST_PROCESSING FALSE
#define DEFAULT_POST_PROCESSING_FLAGS (VP8_DEBLOCK | VP8_DEMACROBLOCK | VP8_MFQE)
#define DEFAULT_DEBLOCKING_LEVEL 4
#define DEFAULT_NOISE_LEVEL 0
#define DEFAULT_THREADS 0
#define DEFAULT_VIDEO_CODEC_TAG NULL
#define DEFAULT_CODEC_ALGO NULL
enum
{
PROP_0,
PROP_POST_PROCESSING,
PROP_POST_PROCESSING_FLAGS,
PROP_DEBLOCKING_LEVEL,
PROP_NOISE_LEVEL,
PROP_THREADS
};
#define C_FLAGS(v) ((guint) v)
#define GST_VPX_DEC_TYPE_POST_PROCESSING_FLAGS (gst_vpx_dec_post_processing_flags_get_type())
static GType
gst_vpx_dec_post_processing_flags_get_type (void)
{
static const GFlagsValue values[] = {
{C_FLAGS (VP8_DEBLOCK), "Deblock", "deblock"},
{C_FLAGS (VP8_DEMACROBLOCK), "Demacroblock", "demacroblock"},
{C_FLAGS (VP8_ADDNOISE), "Add noise", "addnoise"},
#ifndef HAVE_VPX_1_8
{C_FLAGS (VP8_DEBUG_TXT_FRAME_INFO),
"Print frame information",
"visualize-frame-info"},
{C_FLAGS (VP8_DEBUG_TXT_MBLK_MODES),
"Show macroblock mode selection overlaid on image",
"visualize-macroblock-modes"},
{C_FLAGS (VP8_DEBUG_TXT_DC_DIFF),
"Show dc diff for each macro block overlaid on image",
"visualize-dc-diff"},
{C_FLAGS (VP8_DEBUG_TXT_RATE_INFO),
"Print video rate info",
"visualize-rate-info"},
#endif
{C_FLAGS (VP8_MFQE), "Multi-frame quality enhancement", "mfqe"},
{0, NULL, NULL}
};
static GType id = 0;
if (g_once_init_enter ((gsize *) & id)) {
GType _id;
_id = g_flags_register_static ("GstVPXDecPostProcessingFlags", values);
g_once_init_leave ((gsize *) & id, _id);
}
return id;
}
#undef C_FLAGS
static void gst_vpx_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_vpx_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_vpx_dec_start (GstVideoDecoder * decoder);
static gboolean gst_vpx_dec_stop (GstVideoDecoder * decoder);
static gboolean gst_vpx_dec_set_format (GstVideoDecoder * decoder,
GstVideoCodecState * state);
static gboolean gst_vpx_dec_flush (GstVideoDecoder * decoder);
static GstFlowReturn
gst_vpx_dec_handle_frame (GstVideoDecoder * decoder,
GstVideoCodecFrame * frame);
static gboolean gst_vpx_dec_decide_allocation (GstVideoDecoder * decoder,
GstQuery * query);
static void gst_vpx_dec_image_to_buffer (GstVPXDec * dec,
const vpx_image_t * img, GstBuffer * buffer);
static GstFlowReturn gst_vpx_dec_open_codec (GstVPXDec * dec,
GstVideoCodecFrame * frame);
static void gst_vpx_dec_default_send_tags (GstVPXDec * dec);
static void gst_vpx_dec_set_stream_info (GstVPXDec * dec,
vpx_codec_stream_info_t * stream_info);
static void gst_vpx_dec_set_default_format (GstVPXDec * dec, GstVideoFormat fmt,
int width, int height);
static gboolean gst_vpx_dec_default_frame_format (GstVPXDec * dec,
vpx_image_t * img, GstVideoFormat * fmt);
static void gst_vpx_dec_handle_resolution_change (GstVPXDec * dec,
vpx_image_t * img, GstVideoFormat fmt);
#define parent_class gst_vpx_dec_parent_class
G_DEFINE_TYPE (GstVPXDec, gst_vpx_dec, GST_TYPE_VIDEO_DECODER);
static void
gst_vpx_dec_class_init (GstVPXDecClass * klass)
{
GObjectClass *gobject_class;
GstVideoDecoderClass *base_video_decoder_class;
gobject_class = G_OBJECT_CLASS (klass);
base_video_decoder_class = GST_VIDEO_DECODER_CLASS (klass);
gobject_class->set_property = gst_vpx_dec_set_property;
gobject_class->get_property = gst_vpx_dec_get_property;
g_object_class_install_property (gobject_class, PROP_POST_PROCESSING,
g_param_spec_boolean ("post-processing", "Post Processing",
"Enable post processing", DEFAULT_POST_PROCESSING,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_POST_PROCESSING_FLAGS,
g_param_spec_flags ("post-processing-flags", "Post Processing Flags",
"Flags to control post processing",
GST_VPX_DEC_TYPE_POST_PROCESSING_FLAGS, DEFAULT_POST_PROCESSING_FLAGS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DEBLOCKING_LEVEL,
g_param_spec_uint ("deblocking-level", "Deblocking Level",
"Deblocking level",
0, 16, DEFAULT_DEBLOCKING_LEVEL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_NOISE_LEVEL,
g_param_spec_uint ("noise-level", "Noise Level",
"Noise level",
0, 16, DEFAULT_NOISE_LEVEL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_THREADS,
g_param_spec_uint ("threads", "Max Threads",
"Maximum number of decoding threads",
0, 16, DEFAULT_THREADS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
base_video_decoder_class->start = GST_DEBUG_FUNCPTR (gst_vpx_dec_start);
base_video_decoder_class->stop = GST_DEBUG_FUNCPTR (gst_vpx_dec_stop);
base_video_decoder_class->flush = GST_DEBUG_FUNCPTR (gst_vpx_dec_flush);
base_video_decoder_class->set_format =
GST_DEBUG_FUNCPTR (gst_vpx_dec_set_format);
base_video_decoder_class->handle_frame =
GST_DEBUG_FUNCPTR (gst_vpx_dec_handle_frame);;
base_video_decoder_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_vpx_dec_decide_allocation);
klass->video_codec_tag = DEFAULT_VIDEO_CODEC_TAG;
klass->codec_algo = DEFAULT_CODEC_ALGO;
klass->open_codec = GST_DEBUG_FUNCPTR (gst_vpx_dec_open_codec);
klass->send_tags = GST_DEBUG_FUNCPTR (gst_vpx_dec_default_send_tags);
klass->set_stream_info = NULL;
klass->set_default_format = NULL;
klass->handle_resolution_change = NULL;
klass->get_frame_format =
GST_DEBUG_FUNCPTR (gst_vpx_dec_default_frame_format);
GST_DEBUG_CATEGORY_INIT (gst_vpxdec_debug, "vpxdec", 0, "VPX Decoder");
gst_type_mark_as_plugin_api (GST_VPX_DEC_TYPE_POST_PROCESSING_FLAGS, 0);
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gst_type_mark_as_plugin_api (GST_TYPE_VPX_DEC, 0);
}
static void
gst_vpx_dec_init (GstVPXDec * gst_vpx_dec)
{
GstVideoDecoder *decoder = (GstVideoDecoder *) gst_vpx_dec;
GstVPXDecClass *vpxclass = GST_VPX_DEC_GET_CLASS (gst_vpx_dec);
GST_DEBUG_OBJECT (gst_vpx_dec, "gst_vpx_dec_init");
gst_video_decoder_set_packetized (decoder, TRUE);
gst_vpx_dec->post_processing = DEFAULT_POST_PROCESSING;
gst_vpx_dec->post_processing_flags = DEFAULT_POST_PROCESSING_FLAGS;
gst_vpx_dec->deblocking_level = DEFAULT_DEBLOCKING_LEVEL;
gst_vpx_dec->noise_level = DEFAULT_NOISE_LEVEL;
if (vpxclass->get_needs_sync_point) {
gst_video_decoder_set_needs_sync_point (GST_VIDEO_DECODER (gst_vpx_dec),
vpxclass->get_needs_sync_point (gst_vpx_dec));
}
gst_video_decoder_set_needs_format (decoder, TRUE);
gst_video_decoder_set_use_default_pad_acceptcaps (decoder, TRUE);
GST_PAD_SET_ACCEPT_TEMPLATE (GST_VIDEO_DECODER_SINK_PAD (decoder));
}
static void
gst_vpx_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVPXDec *dec;
g_return_if_fail (GST_IS_VPX_DEC (object));
dec = GST_VPX_DEC (object);
GST_DEBUG_OBJECT (object, "gst_vpx_dec_set_property");
switch (prop_id) {
case PROP_POST_PROCESSING:
dec->post_processing = g_value_get_boolean (value);
break;
case PROP_POST_PROCESSING_FLAGS:
dec->post_processing_flags = g_value_get_flags (value);
break;
case PROP_DEBLOCKING_LEVEL:
dec->deblocking_level = g_value_get_uint (value);
break;
case PROP_NOISE_LEVEL:
dec->noise_level = g_value_get_uint (value);
break;
case PROP_THREADS:
dec->threads = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_vpx_dec_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstVPXDec *dec;
g_return_if_fail (GST_IS_VPX_DEC (object));
dec = GST_VPX_DEC (object);
switch (prop_id) {
case PROP_POST_PROCESSING:
g_value_set_boolean (value, dec->post_processing);
break;
case PROP_POST_PROCESSING_FLAGS:
g_value_set_flags (value, dec->post_processing_flags);
break;
case PROP_DEBLOCKING_LEVEL:
g_value_set_uint (value, dec->deblocking_level);
break;
case PROP_NOISE_LEVEL:
g_value_set_uint (value, dec->noise_level);
break;
case PROP_THREADS:
g_value_set_uint (value, dec->threads);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_vpx_dec_start (GstVideoDecoder * decoder)
{
GstVPXDec *gst_vpx_dec = GST_VPX_DEC (decoder);
GST_DEBUG_OBJECT (gst_vpx_dec, "start");
gst_vpx_dec->decoder_inited = FALSE;
return TRUE;
}
static gboolean
gst_vpx_dec_stop (GstVideoDecoder * base_video_decoder)
{
GstVPXDec *gst_vpx_dec = GST_VPX_DEC (base_video_decoder);
GST_DEBUG_OBJECT (gst_vpx_dec, "stop");
if (gst_vpx_dec->output_state) {
gst_video_codec_state_unref (gst_vpx_dec->output_state);
gst_vpx_dec->output_state = NULL;
}
if (gst_vpx_dec->input_state) {
gst_video_codec_state_unref (gst_vpx_dec->input_state);
gst_vpx_dec->input_state = NULL;
}
if (gst_vpx_dec->decoder_inited)
vpx_codec_destroy (&gst_vpx_dec->decoder);
gst_vpx_dec->decoder_inited = FALSE;
if (gst_vpx_dec->pool) {
gst_buffer_pool_set_active (gst_vpx_dec->pool, FALSE);
gst_object_unref (gst_vpx_dec->pool);
gst_vpx_dec->pool = NULL;
gst_vpx_dec->buf_size = 0;
}
return TRUE;
}
static gboolean
gst_vpx_dec_set_format (GstVideoDecoder * decoder, GstVideoCodecState * state)
{
GstVPXDec *gst_vpx_dec = GST_VPX_DEC (decoder);
GST_DEBUG_OBJECT (gst_vpx_dec, "set_format");
if (gst_vpx_dec->decoder_inited)
vpx_codec_destroy (&gst_vpx_dec->decoder);
gst_vpx_dec->decoder_inited = FALSE;
if (gst_vpx_dec->output_state) {
gst_video_codec_state_unref (gst_vpx_dec->output_state);
gst_vpx_dec->output_state = NULL;
}
if (gst_vpx_dec->input_state) {
gst_video_codec_state_unref (gst_vpx_dec->input_state);
}
gst_vpx_dec->input_state = gst_video_codec_state_ref (state);
return TRUE;
}
static gboolean
gst_vpx_dec_flush (GstVideoDecoder * base_video_decoder)
{
GstVPXDec *decoder;
GST_DEBUG_OBJECT (base_video_decoder, "flush");
decoder = GST_VPX_DEC (base_video_decoder);
if (decoder->output_state) {
gst_video_codec_state_unref (decoder->output_state);
decoder->output_state = NULL;
}
if (decoder->decoder_inited)
vpx_codec_destroy (&decoder->decoder);
decoder->decoder_inited = FALSE;
return TRUE;
}
static void
gst_vpx_dec_default_send_tags (GstVPXDec * dec)
{
GstTagList *list;
GstVPXDecClass *vpxclass = GST_VPX_DEC_GET_CLASS (dec);
if (vpxclass->video_codec_tag == NULL)
return;
list = gst_tag_list_new_empty ();
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_VIDEO_CODEC, vpxclass->video_codec_tag, NULL);
gst_pad_push_event (GST_VIDEO_DECODER_SRC_PAD (dec),
gst_event_new_tag (list));
}
struct Frame
{
GstMapInfo info;
GstBuffer *buffer;
};
static GstBuffer *
gst_vpx_dec_prepare_image (GstVPXDec * dec, const vpx_image_t * img)
{
gint comp;
GstVideoMeta *vmeta;
GstBuffer *buffer;
struct Frame *frame = img->fb_priv;
GstVideoInfo *info = &dec->output_state->info;
buffer = gst_buffer_ref (frame->buffer);
vmeta = gst_buffer_get_video_meta (buffer);
vmeta->format = GST_VIDEO_INFO_FORMAT (info);
vmeta->width = GST_VIDEO_INFO_WIDTH (info);
vmeta->height = GST_VIDEO_INFO_HEIGHT (info);
vmeta->n_planes = GST_VIDEO_INFO_N_PLANES (info);
for (comp = 0; comp < 4; comp++) {
vmeta->stride[comp] = img->stride[comp];
vmeta->offset[comp] =
img->planes[comp] ? img->planes[comp] - frame->info.data : 0;
}
/* FIXME This is a READ/WRITE mapped buffer see bug #754826 */
return buffer;
}
static int
gst_vpx_dec_get_buffer_cb (gpointer priv, gsize min_size,
vpx_codec_frame_buffer_t * fb)
{
GstVPXDec *dec = priv;
GstBuffer *buffer = NULL;
struct Frame *frame;
GstFlowReturn ret;
if (!dec->pool || dec->buf_size != min_size) {
GstBufferPool *pool;
GstStructure *config;
GstCaps *caps;
GstAllocator *allocator;
GstAllocationParams params;
if (dec->pool) {
gst_buffer_pool_set_active (dec->pool, FALSE);
gst_object_unref (dec->pool);
dec->pool = NULL;
dec->buf_size = 0;
}
gst_video_decoder_get_allocator (GST_VIDEO_DECODER (dec), &allocator,
&params);
if (allocator &&
GST_OBJECT_FLAG_IS_SET (allocator, GST_ALLOCATOR_FLAG_CUSTOM_ALLOC)) {
gst_object_unref (allocator);
allocator = NULL;
}
pool = gst_buffer_pool_new ();
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_allocator (config, allocator, &params);
caps = gst_caps_from_string ("video/internal");
gst_buffer_pool_config_set_params (config, caps, min_size, 2, 0);
gst_caps_unref (caps);
gst_buffer_pool_set_config (pool, config);
if (allocator)
gst_object_unref (allocator);
if (!gst_buffer_pool_set_active (pool, TRUE)) {
GST_WARNING ("Failed to create internal pool");
gst_object_unref (pool);
return -1;
}
dec->pool = pool;
dec->buf_size = min_size;
}
ret = gst_buffer_pool_acquire_buffer (dec->pool, &buffer, NULL);
if (ret != GST_FLOW_OK) {
GST_WARNING ("Failed to acquire buffer from internal pool.");
return -1;
}
/* Add it now, while the buffer is writable */
gst_buffer_add_video_meta (buffer, GST_VIDEO_FRAME_FLAG_NONE,
GST_VIDEO_FORMAT_ENCODED, 0, 0);
frame = g_new0 (struct Frame, 1);
if (!gst_buffer_map (buffer, &frame->info, GST_MAP_READWRITE)) {
gst_buffer_unref (buffer);
g_free (frame);
GST_WARNING ("Failed to map buffer from internal pool.");
return -1;
}
fb->size = frame->info.size;
fb->data = frame->info.data;
frame->buffer = buffer;
fb->priv = frame;
GST_TRACE_OBJECT (priv, "Allocated buffer %p", frame->buffer);
return 0;
}
static int
gst_vpx_dec_release_buffer_cb (gpointer priv, vpx_codec_frame_buffer_t * fb)
{
struct Frame *frame = fb->priv;
/* We're sometimes called without a frame */
if (!frame)
return 0;
GST_TRACE_OBJECT (priv, "Release buffer %p", frame->buffer);
gst_buffer_unmap (frame->buffer, &frame->info);
gst_buffer_unref (frame->buffer);
g_free (frame);
fb->priv = NULL;
return 0;
}
static void
gst_vpx_dec_image_to_buffer (GstVPXDec * dec, const vpx_image_t * img,
GstBuffer * buffer)
{
int deststride, srcstride, height, width, line, comp;
guint8 *dest, *src;
GstVideoFrame frame;
GstVideoInfo *info = &dec->output_state->info;
if (!gst_video_frame_map (&frame, info, buffer, GST_MAP_WRITE)) {
GST_ERROR_OBJECT (dec, "Could not map video buffer");
return;
}
for (comp = 0; comp < 3; comp++) {
dest = GST_VIDEO_FRAME_COMP_DATA (&frame, comp);
src = img->planes[comp];
width = GST_VIDEO_FRAME_COMP_WIDTH (&frame, comp)
* GST_VIDEO_FRAME_COMP_PSTRIDE (&frame, comp);
height = GST_VIDEO_FRAME_COMP_HEIGHT (&frame, comp);
deststride = GST_VIDEO_FRAME_COMP_STRIDE (&frame, comp);
srcstride = img->stride[comp];
if (srcstride == deststride) {
GST_TRACE_OBJECT (dec, "Stride matches. Comp %d: %d, copying full plane",
comp, srcstride);
memcpy (dest, src, srcstride * height);
} else {
GST_TRACE_OBJECT (dec, "Stride mismatch. Comp %d: %d != %d, copying "
"line by line.", comp, srcstride, deststride);
for (line = 0; line < height; line++) {
memcpy (dest, src, width);
dest += deststride;
src += srcstride;
}
}
}
gst_video_frame_unmap (&frame);
}
static GstFlowReturn
gst_vpx_dec_open_codec (GstVPXDec * dec, GstVideoCodecFrame * frame)
{
int flags = 0;
vpx_codec_stream_info_t stream_info;
vpx_codec_caps_t caps;
vpx_codec_dec_cfg_t cfg;
vpx_codec_err_t status;
GstMapInfo minfo;
GstVPXDecClass *vpxclass = GST_VPX_DEC_GET_CLASS (dec);
g_return_val_if_fail (vpxclass->codec_algo != NULL, GST_FLOW_ERROR);
memset (&stream_info, 0, sizeof (stream_info));
memset (&cfg, 0, sizeof (cfg));
stream_info.sz = sizeof (stream_info);
if (!gst_buffer_map (frame->input_buffer, &minfo, GST_MAP_READ)) {
GST_ERROR_OBJECT (dec, "Failed to map input buffer");
return GST_FLOW_ERROR;
}
status = vpx_codec_peek_stream_info (vpxclass->codec_algo,
minfo.data, minfo.size, &stream_info);
gst_buffer_unmap (frame->input_buffer, &minfo);
if (status != VPX_CODEC_OK) {
GST_INFO_OBJECT (dec, "VPX preprocessing error: %s",
gst_vpx_error_name (status));
return GST_FLOW_CUSTOM_SUCCESS_1;
}
if (!stream_info.is_kf) {
GST_INFO_OBJECT (dec, "No keyframe, skipping");
return GST_FLOW_CUSTOM_SUCCESS_1;
}
if (stream_info.w == 0 || stream_info.h == 0) {
/* For VP8 it's possible to signal width or height to be 0, but it does
* not make sense to do so. For VP9 it's impossible. Hence, we most likely
* have a corrupt stream if width or height is 0. */
GST_INFO_OBJECT (dec, "Invalid resolution %d x %d", stream_info.w,
stream_info.h);
return GST_FLOW_CUSTOM_SUCCESS_1;
}
gst_vpx_dec_set_stream_info (dec, &stream_info);
gst_vpx_dec_set_default_format (dec, GST_VIDEO_FORMAT_I420, stream_info.w,
stream_info.h);
cfg.w = stream_info.w;
cfg.h = stream_info.h;
if (dec->threads > 0)
cfg.threads = dec->threads;
else
cfg.threads = g_get_num_processors ();
caps = vpx_codec_get_caps (vpxclass->codec_algo);
if (dec->post_processing) {
if (!(caps & VPX_CODEC_CAP_POSTPROC)) {
GST_WARNING_OBJECT (dec, "Decoder does not support post processing");
} else {
flags |= VPX_CODEC_USE_POSTPROC;
}
}
status =
vpx_codec_dec_init (&dec->decoder, vpxclass->codec_algo, &cfg, flags);
if (status != VPX_CODEC_OK) {
GST_ELEMENT_ERROR (dec, LIBRARY, INIT,
("Failed to initialize VP8 decoder"), ("%s",
gst_vpx_error_name (status)));
return GST_FLOW_ERROR;
}
if ((caps & VPX_CODEC_CAP_POSTPROC) && dec->post_processing) {
vp8_postproc_cfg_t pp_cfg = { 0, };
pp_cfg.post_proc_flag = dec->post_processing_flags;
pp_cfg.deblocking_level = dec->deblocking_level;
pp_cfg.noise_level = dec->noise_level;
status = vpx_codec_control (&dec->decoder, VP8_SET_POSTPROC, &pp_cfg);
if (status != VPX_CODEC_OK) {
GST_WARNING_OBJECT (dec, "Couldn't set postprocessing settings: %s",
gst_vpx_error_name (status));
}
}
vpx_codec_set_frame_buffer_functions (&dec->decoder,
gst_vpx_dec_get_buffer_cb, gst_vpx_dec_release_buffer_cb, dec);
dec->decoder_inited = TRUE;
return GST_FLOW_OK;
}
static GstFlowReturn
gst_vpx_dec_handle_frame (GstVideoDecoder * decoder, GstVideoCodecFrame * frame)
{
GstVPXDec *dec;
GstFlowReturn ret = GST_FLOW_OK;
vpx_codec_err_t status;
vpx_codec_iter_t iter = NULL;
vpx_image_t *img;
long decoder_deadline = 0;
GstClockTimeDiff deadline;
GstMapInfo minfo;
GstVPXDecClass *vpxclass;
GstVideoFormat fmt;
GST_LOG_OBJECT (decoder, "handle_frame");
dec = GST_VPX_DEC (decoder);
vpxclass = GST_VPX_DEC_GET_CLASS (dec);
if (!dec->decoder_inited) {
ret = vpxclass->open_codec (dec, frame);
if (ret == GST_FLOW_CUSTOM_SUCCESS_1) {
GstVideoDecoderRequestSyncPointFlags flags = 0;
if (gst_video_decoder_get_needs_sync_point (decoder))
flags |= GST_VIDEO_DECODER_REQUEST_SYNC_POINT_DISCARD_INPUT;
gst_video_decoder_request_sync_point (decoder, frame, flags);
gst_video_decoder_drop_frame (decoder, frame);
return GST_FLOW_OK;
} else if (ret != GST_FLOW_OK) {
gst_video_codec_frame_unref (frame);
return ret;
}
}
deadline = gst_video_decoder_get_max_decode_time (decoder, frame);
if (deadline < 0) {
decoder_deadline = 1;
} else if (deadline == G_MAXINT64) {
decoder_deadline = 0;
} else {
decoder_deadline = MAX (1, deadline / GST_MSECOND);
}
if (!gst_buffer_map (frame->input_buffer, &minfo, GST_MAP_READ)) {
GST_ERROR_OBJECT (dec, "Failed to map input buffer");
gst_video_codec_frame_unref (frame);
return GST_FLOW_ERROR;
}
status = vpx_codec_decode (&dec->decoder,
minfo.data, minfo.size, NULL, decoder_deadline);
gst_buffer_unmap (frame->input_buffer, &minfo);
if (status) {
GstVideoDecoderRequestSyncPointFlags flags = 0;
GST_VIDEO_DECODER_ERROR (decoder, 1, LIBRARY, ENCODE,
("Failed to decode frame"), ("%s", gst_vpx_error_name (status)), ret);
if (gst_video_decoder_get_needs_sync_point (decoder))
flags |= GST_VIDEO_DECODER_REQUEST_SYNC_POINT_DISCARD_INPUT;
gst_video_decoder_request_sync_point (decoder, frame, flags);
gst_video_codec_frame_unref (frame);
return ret;
}
img = vpx_codec_get_frame (&dec->decoder, &iter);
if (img) {
if (vpxclass->get_frame_format (dec, img, &fmt) == FALSE) {
vpx_img_free (img);
GST_ELEMENT_ERROR (decoder, LIBRARY, ENCODE,
("Failed to decode frame"), ("Unsupported color format %d",
img->fmt));
gst_video_codec_frame_unref (frame);
return GST_FLOW_ERROR;
}
if (deadline < 0) {
GST_LOG_OBJECT (dec, "Skipping late frame (%f s past deadline)",
(double) -deadline / GST_SECOND);
gst_video_decoder_drop_frame (decoder, frame);
} else {
gst_vpx_dec_handle_resolution_change (dec, img, fmt);
if (img->fb_priv && dec->have_video_meta) {
frame->output_buffer = gst_vpx_dec_prepare_image (dec, img);
ret = gst_video_decoder_finish_frame (decoder, frame);
} else {
ret = gst_video_decoder_allocate_output_frame (decoder, frame);
if (ret == GST_FLOW_OK) {
gst_vpx_dec_image_to_buffer (dec, img, frame->output_buffer);
ret = gst_video_decoder_finish_frame (decoder, frame);
} else {
gst_video_decoder_drop_frame (decoder, frame);
}
}
}
vpx_img_free (img);
while ((img = vpx_codec_get_frame (&dec->decoder, &iter))) {
GST_WARNING_OBJECT (decoder, "Multiple decoded frames... dropping");
vpx_img_free (img);
}
} else {
/* Invisible frame */
GST_VIDEO_CODEC_FRAME_SET_DECODE_ONLY (frame);
gst_video_decoder_finish_frame (decoder, frame);
}
return ret;
}
static gboolean
gst_vpx_dec_decide_allocation (GstVideoDecoder * bdec, GstQuery * query)
{
GstVPXDec *dec = GST_VPX_DEC (bdec);
GstBufferPool *pool;
GstStructure *config;
if (!GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation (bdec, query))
return FALSE;
g_assert (gst_query_get_n_allocation_pools (query) > 0);
gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL);
g_assert (pool != NULL);
config = gst_buffer_pool_get_config (pool);
if (gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL)) {
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
dec->have_video_meta = TRUE;
}
gst_buffer_pool_set_config (pool, config);
gst_object_unref (pool);
return TRUE;
}
static void
gst_vpx_dec_set_stream_info (GstVPXDec * dec,
vpx_codec_stream_info_t * stream_info)
{
GstVPXDecClass *vpxclass = GST_VPX_DEC_GET_CLASS (dec);
if (vpxclass->set_stream_info != NULL) {
vpxclass->set_stream_info (dec, stream_info);
}
}
static void
gst_vpx_dec_set_default_format (GstVPXDec * dec, GstVideoFormat fmt, int width,
int height)
{
GstVPXDecClass *vpxclass = GST_VPX_DEC_GET_CLASS (dec);
if (vpxclass->set_default_format != NULL) {
vpxclass->set_default_format (dec, fmt, width, height);
}
}
static gboolean
gst_vpx_dec_default_frame_format (GstVPXDec * dec, vpx_image_t * img,
GstVideoFormat * fmt)
{
if (img->fmt == VPX_IMG_FMT_I420) {
*fmt = GST_VIDEO_FORMAT_I420;
return TRUE;
} else {
return FALSE;
}
}
static void
gst_vpx_dec_handle_resolution_change (GstVPXDec * dec, vpx_image_t * img,
GstVideoFormat fmt)
{
GstVPXDecClass *vpxclass = GST_VPX_DEC_GET_CLASS (dec);
if (vpxclass->handle_resolution_change != NULL) {
vpxclass->handle_resolution_change (dec, img, fmt);
}
}
#endif /* HAVE_VP8_DECODER || HAVE_VP9_DECODER */