gstreamer/ext/aom/gstav1dec.c

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/* GStreamer
* Copyright (C) <2017> Sean DuBois <sean@siobud.com>
*
* 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.
*/
/**
* SECTION:element-av1dec
*
* AV1 Decoder.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch-1.0 -v filesrc location=videotestsrc.webm ! matroskademux ! av1dec ! videoconvert ! videoscale ! autovideosink
* ]|
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstav1dec.h"
enum
{
PROP_0,
};
static GstStaticPadTemplate gst_av1_dec_sink_pad_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-av1")
);
static GstStaticPadTemplate gst_av1_dec_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ I420, YV12, Y42B, Y444"
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
", I420_10LE, I420_12LE, I422_10LE, I422_12LE, Y444_10LE, Y444_12LE"
#else
", I420_10BE, I420_12BE, I422_10BE, I422_12BE, Y444_10BE, Y444_12BE"
#endif
" }"))
);
GST_DEBUG_CATEGORY_STATIC (av1_dec_debug);
#define GST_CAT_DEFAULT av1_dec_debug
#define GST_VIDEO_FORMAT_WITH_ENDIAN(fmt,endian) GST_VIDEO_FORMAT_##fmt##endian
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
#define AOM_FMT_TO_GST(fmt) GST_VIDEO_FORMAT_WITH_ENDIAN(fmt,LE)
#else
#define AOM_FMT_TO_GST(fmt) GST_VIDEO_FORMAT_WITH_ENDIAN(fmt,BE)
#endif
static void gst_av1_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_av1_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_av1_dec_start (GstVideoDecoder * dec);
static gboolean gst_av1_dec_stop (GstVideoDecoder * dec);
static gboolean gst_av1_dec_set_format (GstVideoDecoder * dec,
GstVideoCodecState * state);
static gboolean gst_av1_dec_flush (GstVideoDecoder * dec);
static GstFlowReturn
gst_av1_dec_handle_frame (GstVideoDecoder * decoder,
GstVideoCodecFrame * frame);
static void gst_av1_dec_image_to_buffer (GstAV1Dec * dec,
const aom_image_t * img, GstBuffer * buffer);
static GstFlowReturn gst_av1_dec_open_codec (GstAV1Dec * av1dec,
GstVideoCodecFrame * frame);
static gboolean gst_av1_dec_get_valid_format (GstAV1Dec * dec,
const aom_image_t * img, GstVideoFormat * fmt);
#define gst_av1_dec_parent_class parent_class
G_DEFINE_TYPE (GstAV1Dec, gst_av1_dec, GST_TYPE_VIDEO_DECODER);
static void
gst_av1_dec_class_init (GstAV1DecClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstVideoDecoderClass *vdec_class;
gobject_class = (GObjectClass *) klass;
element_class = (GstElementClass *) klass;
vdec_class = (GstVideoDecoderClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = gst_av1_dec_set_property;
gobject_class->get_property = gst_av1_dec_get_property;
gst_element_class_add_static_pad_template (element_class,
&gst_av1_dec_src_pad_template);
gst_element_class_add_static_pad_template (element_class,
&gst_av1_dec_sink_pad_template);
gst_element_class_set_static_metadata (element_class, "AV1 Decoder",
"Codec/Decoder/Video", "Decode AV1 video streams",
"Sean DuBois <sean@siobud.com>");
vdec_class->start = GST_DEBUG_FUNCPTR (gst_av1_dec_start);
vdec_class->stop = GST_DEBUG_FUNCPTR (gst_av1_dec_stop);
vdec_class->flush = GST_DEBUG_FUNCPTR (gst_av1_dec_flush);
vdec_class->set_format = GST_DEBUG_FUNCPTR (gst_av1_dec_set_format);
vdec_class->handle_frame = GST_DEBUG_FUNCPTR (gst_av1_dec_handle_frame);
klass->codec_algo = &aom_codec_av1_dx_algo;
GST_DEBUG_CATEGORY_INIT (av1_dec_debug, "av1dec", 0, "AV1 decoding element");
}
static void
gst_av1_dec_init (GstAV1Dec * av1dec)
{
GstVideoDecoder *dec = (GstVideoDecoder *) av1dec;
GST_DEBUG_OBJECT (dec, "gst_av1_dec_init");
gst_video_decoder_set_packetized (dec, TRUE);
gst_video_decoder_set_needs_format (dec, TRUE);
gst_video_decoder_set_use_default_pad_acceptcaps (dec, TRUE);
GST_PAD_SET_ACCEPT_TEMPLATE (GST_VIDEO_DECODER_SINK_PAD (dec));
}
static void
gst_av1_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_av1_dec_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_av1_dec_start (GstVideoDecoder * dec)
{
GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
av1dec->decoder_inited = FALSE;
av1dec->output_state = NULL;
av1dec->input_state = NULL;
return TRUE;
}
static gboolean
gst_av1_dec_stop (GstVideoDecoder * dec)
{
GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
if (av1dec->output_state) {
gst_video_codec_state_unref (av1dec->output_state);
av1dec->output_state = NULL;
}
if (av1dec->input_state) {
gst_video_codec_state_unref (av1dec->input_state);
av1dec->input_state = NULL;
}
if (av1dec->decoder_inited) {
aom_codec_destroy (&av1dec->decoder);
}
av1dec->decoder_inited = FALSE;
return TRUE;
}
static gboolean
gst_av1_dec_set_format (GstVideoDecoder * dec, GstVideoCodecState * state)
{
GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
if (av1dec->decoder_inited) {
aom_codec_destroy (&av1dec->decoder);
}
av1dec->decoder_inited = FALSE;
if (av1dec->output_state) {
gst_video_codec_state_unref (av1dec->output_state);
av1dec->output_state = NULL;
}
if (av1dec->input_state) {
gst_video_codec_state_unref (av1dec->input_state);
}
av1dec->input_state = gst_video_codec_state_ref (state);
return TRUE;
}
static gboolean
gst_av1_dec_flush (GstVideoDecoder * dec)
{
GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
if (av1dec->output_state) {
gst_video_codec_state_unref (av1dec->output_state);
av1dec->output_state = NULL;
}
if (av1dec->decoder_inited) {
aom_codec_destroy (&av1dec->decoder);
}
av1dec->decoder_inited = FALSE;
return TRUE;
}
static GstFlowReturn
gst_av1_dec_open_codec (GstAV1Dec * av1dec, GstVideoCodecFrame * frame)
{
aom_codec_err_t status;
GstAV1DecClass *av1class = GST_AV1_DEC_GET_CLASS (av1dec);
status = aom_codec_dec_init (&av1dec->decoder, av1class->codec_algo, NULL, 0);
if (status != AOM_CODEC_OK) {
GST_ELEMENT_ERROR (av1dec, LIBRARY, INIT,
("Failed to initialize AOM decoder"), ("%s", ""));
return GST_FLOW_ERROR;
}
av1dec->decoder_inited = TRUE;
return GST_FLOW_OK;
}
static void
gst_av1_dec_handle_resolution_change (GstAV1Dec * av1dec, aom_image_t * img,
GstVideoFormat fmt)
{
if (!av1dec->output_state ||
av1dec->output_state->info.finfo->format != fmt ||
av1dec->output_state->info.width != img->d_w ||
av1dec->output_state->info.height != img->d_h) {
if (av1dec->output_state)
gst_video_codec_state_unref (av1dec->output_state);
av1dec->output_state =
gst_video_decoder_set_output_state (GST_VIDEO_DECODER (av1dec),
fmt, img->d_w, img->d_h, av1dec->input_state);
gst_video_decoder_negotiate (GST_VIDEO_DECODER (av1dec));
}
}
static void
gst_av1_dec_image_to_buffer (GstAV1Dec * dec, const aom_image_t * img,
GstBuffer * buffer)
{
int deststride, srcstride, height, width, line, comp, y;
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 ((img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) && img->bit_depth == 8) {
GST_TRACE_OBJECT (dec,
"HIGHBITDEPTH image with 8 bit_depth. Comp %d: %d != %d, copying "
"line by line.", comp, srcstride, deststride);
for (line = 0; line < height; line++) {
for (y = 0; y < width; y++) {
dest[y] = src[y * 2];
}
dest += deststride;
src += srcstride;
}
} else 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);
}
gboolean
gst_av1_dec_get_valid_format (GstAV1Dec * dec, const aom_image_t * img,
GstVideoFormat * fmt)
{
switch (img->fmt) {
case AOM_IMG_FMT_I420:
case AOM_IMG_FMT_I42016:
if (img->bit_depth == 8) {
*fmt = img->monochrome ? GST_VIDEO_FORMAT_GRAY8 : GST_VIDEO_FORMAT_I420;
return TRUE;
} else if (img->bit_depth == 10) {
*fmt = AOM_FMT_TO_GST (I420_10);
return TRUE;
} else if (img->bit_depth == 12) {
*fmt = AOM_FMT_TO_GST (I420_12);
return TRUE;
}
GST_FIXME_OBJECT (dec,
"Please add a 4:2:0 planar %u bit depth frame format",
img->bit_depth);
GST_ELEMENT_WARNING (dec, STREAM, NOT_IMPLEMENTED, (NULL),
("Unsupported frame format - 4:2:0 planar %u bit depth",
img->bit_depth));
return FALSE;
case AOM_IMG_FMT_I422:
case AOM_IMG_FMT_I42216:
if (img->bit_depth == 8) {
*fmt = GST_VIDEO_FORMAT_Y42B;
return TRUE;
} else if (img->bit_depth == 10) {
*fmt = AOM_FMT_TO_GST (I422_10);
return TRUE;
} else if (img->bit_depth == 12) {
*fmt = AOM_FMT_TO_GST (I422_12);
return TRUE;
}
GST_FIXME_OBJECT (dec,
"Please add a 4:2:2 planar %u bit depth frame format",
img->bit_depth);
GST_ELEMENT_WARNING (dec, STREAM, NOT_IMPLEMENTED, (NULL),
("Unsupported frame format - 4:2:2 planar %u bit depth",
img->bit_depth));
return FALSE;
case AOM_IMG_FMT_I444:
case AOM_IMG_FMT_I44416:
if (img->bit_depth == 8) {
*fmt = GST_VIDEO_FORMAT_Y444;
return TRUE;
} else if (img->bit_depth == 10) {
*fmt = AOM_FMT_TO_GST (Y444_10);
return TRUE;
} else if (img->bit_depth == 12) {
*fmt = AOM_FMT_TO_GST (Y444_12);
return TRUE;
}
GST_FIXME_OBJECT (dec,
"Please add a 4:4:4 planar %u bit depth frame format",
img->bit_depth);
GST_ELEMENT_WARNING (dec, STREAM, NOT_IMPLEMENTED, (NULL),
("Unsupported frame format - 4:4:4 planar %u bit depth",
img->bit_depth));
return FALSE;
case AOM_IMG_FMT_YV12:
*fmt = GST_VIDEO_FORMAT_YV12;
return TRUE;
default:
return FALSE;
}
}
static GstFlowReturn
gst_av1_dec_handle_frame (GstVideoDecoder * dec, GstVideoCodecFrame * frame)
{
GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
GstFlowReturn ret;
GstMapInfo minfo;
aom_codec_err_t status;
aom_image_t *img;
aom_codec_iter_t iter = NULL;
GstVideoFormat fmt;
if (!av1dec->decoder_inited) {
ret = gst_av1_dec_open_codec (av1dec, frame);
if (ret == GST_FLOW_CUSTOM_SUCCESS_1) {
gst_video_decoder_drop_frame (dec, frame);
return GST_FLOW_OK;
} else if (ret != GST_FLOW_OK) {
gst_video_codec_frame_unref (frame);
return ret;
}
}
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 = aom_codec_decode (&av1dec->decoder, minfo.data, minfo.size, NULL);
gst_buffer_unmap (frame->input_buffer, &minfo);
if (status) {
GST_ELEMENT_ERROR (av1dec, LIBRARY, INIT,
("Failed to decode frame"), ("%s", ""));
gst_video_codec_frame_unref (frame);
return ret;
}
img = aom_codec_get_frame (&av1dec->decoder, &iter);
if (img) {
if (gst_av1_dec_get_valid_format (av1dec, img, &fmt) == FALSE) {
aom_img_free (img);
GST_ELEMENT_ERROR (dec, LIBRARY, ENCODE,
("Failed to decode frame"), ("Unsupported color format %d",
img->fmt));
gst_video_codec_frame_unref (frame);
return GST_FLOW_ERROR;
}
gst_av1_dec_handle_resolution_change (av1dec, img, fmt);
ret = gst_video_decoder_allocate_output_frame (dec, frame);
if (ret == GST_FLOW_OK) {
gst_av1_dec_image_to_buffer (av1dec, img, frame->output_buffer);
ret = gst_video_decoder_finish_frame (dec, frame);
} else {
gst_video_decoder_drop_frame (dec, frame);
}
aom_img_free (img);
while ((img = aom_codec_get_frame (&av1dec->decoder, &iter))) {
GST_WARNING_OBJECT (dec, "Multiple decoded frames... dropping");
aom_img_free (img);
}
} else {
GST_VIDEO_CODEC_FRAME_SET_DECODE_ONLY (frame);
gst_video_decoder_finish_frame (dec, frame);
}
return ret;
}