--- /dev/null
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * This file:
+ * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * SECTION:element-ffmpegcolorspace
+ *
+ * Convert video frames between a great variety of colorspace formats.
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * gst-launch -v videotestsrc ! video/x-raw-yuv,format=\(fourcc\)YUY2 ! ffmpegcolorspace ! ximagesink
+ * ]|
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "gstffmpegcolorspace.h"
+#include "gstffmpegcodecmap.h"
+#include <gst/video/video.h>
+
+GST_DEBUG_CATEGORY (ffmpegcolorspace_debug);
+#define GST_CAT_DEFAULT ffmpegcolorspace_debug
+GST_DEBUG_CATEGORY (ffmpegcolorspace_performance);
+
+#define FFMPEGCSP_VIDEO_CAPS \
+ "video/x-raw-yuv, width = "GST_VIDEO_SIZE_RANGE" , " \
+ "height="GST_VIDEO_SIZE_RANGE",framerate="GST_VIDEO_FPS_RANGE"," \
+ "format= (fourcc) { I420 , NV12 , NV21 , YV12 , YUY2 , Y42B , Y444 , YUV9 , YVU9 , Y41B , Y800 , Y8 , GREY , Y16 , UYVY , YVYU , IYU1 , v308 , AYUV, A420} ;" \
+ GST_VIDEO_CAPS_RGB";" \
+ GST_VIDEO_CAPS_BGR";" \
+ GST_VIDEO_CAPS_RGBx";" \
+ GST_VIDEO_CAPS_xRGB";" \
+ GST_VIDEO_CAPS_BGRx";" \
+ GST_VIDEO_CAPS_xBGR";" \
+ GST_VIDEO_CAPS_RGBA";" \
+ GST_VIDEO_CAPS_ARGB";" \
+ GST_VIDEO_CAPS_BGRA";" \
+ GST_VIDEO_CAPS_ABGR";" \
+ GST_VIDEO_CAPS_RGB_16";" \
+ GST_VIDEO_CAPS_RGB_15";" \
+ "video/x-raw-rgb, bpp = (int)8, depth = (int)8, " \
+ "width = "GST_VIDEO_SIZE_RANGE" , " \
+ "height = " GST_VIDEO_SIZE_RANGE ", " \
+ "framerate = "GST_VIDEO_FPS_RANGE ";" \
+ GST_VIDEO_CAPS_GRAY8";" \
+ GST_VIDEO_CAPS_GRAY16("BIG_ENDIAN")";" \
+ GST_VIDEO_CAPS_GRAY16("LITTLE_ENDIAN")";"
+
+static GstStaticPadTemplate gst_ffmpegcsp_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (FFMPEGCSP_VIDEO_CAPS)
+ );
+
+static GstStaticPadTemplate gst_ffmpegcsp_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (FFMPEGCSP_VIDEO_CAPS)
+ );
+
+GType gst_ffmpegcsp_get_type (void);
+
+static gboolean gst_ffmpegcsp_set_caps (GstBaseTransform * btrans,
+ GstCaps * incaps, GstCaps * outcaps);
+static gboolean gst_ffmpegcsp_get_unit_size (GstBaseTransform * btrans,
+ GstCaps * caps, guint * size);
+static GstFlowReturn gst_ffmpegcsp_transform (GstBaseTransform * btrans,
+ GstBuffer * inbuf, GstBuffer * outbuf);
+
+static GQuark _QRAWRGB; /* "video/x-raw-rgb" */
+static GQuark _QRAWYUV; /* "video/x-raw-yuv" */
+static GQuark _QALPHAMASK; /* "alpha_mask" */
+
+/* copies the given caps */
+static GstCaps *
+gst_ffmpegcsp_caps_remove_format_info (GstCaps * caps)
+{
+ GstStructure *yuvst, *rgbst, *grayst;
+
+ /* We know there's only one structure since we're given simple caps */
+ caps = gst_caps_copy (caps);
+
+ yuvst = gst_caps_get_structure (caps, 0);
+
+ gst_structure_set_name (yuvst, "video/x-raw-yuv");
+ gst_structure_remove_fields (yuvst, "format", "endianness", "depth",
+ "bpp", "red_mask", "green_mask", "blue_mask", "alpha_mask",
+ "palette_data", NULL);
+
+ rgbst = gst_structure_copy (yuvst);
+ gst_structure_set_name (rgbst, "video/x-raw-rgb");
+ gst_structure_remove_fields (rgbst, "color-matrix", "chroma-site", NULL);
+
+ grayst = gst_structure_copy (rgbst);
+ gst_structure_set_name (grayst, "video/x-raw-gray");
+
+ gst_caps_append_structure (caps, rgbst);
+ gst_caps_append_structure (caps, grayst);
+
+ return caps;
+}
+
+
+static gboolean
+gst_ffmpegcsp_structure_is_alpha (GstStructure * s)
+{
+ GQuark name;
+
+ name = gst_structure_get_name_id (s);
+
+ if (name == _QRAWRGB) {
+ return gst_structure_id_has_field (s, _QALPHAMASK);
+ } else if (name == _QRAWYUV) {
+ guint32 fourcc;
+
+ if (!gst_structure_get_fourcc (s, "format", &fourcc))
+ return FALSE;
+
+ return (fourcc == GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'));
+ }
+
+ return FALSE;
+}
+
+/* The caps can be transformed into any other caps with format info removed.
+ * However, we should prefer passthrough, so if passthrough is possible,
+ * put it first in the list. */
+static GstCaps *
+gst_ffmpegcsp_transform_caps (GstBaseTransform * btrans,
+ GstPadDirection direction, GstCaps * caps)
+{
+ GstCaps *template;
+ GstCaps *tmp, *tmp2;
+ GstCaps *result;
+ GstStructure *s;
+ GstCaps *alpha, *non_alpha;
+
+ template = gst_static_pad_template_get_caps (&gst_ffmpegcsp_src_template);
+ result = gst_caps_copy (caps);
+
+ /* Get all possible caps that we can transform to */
+ tmp = gst_ffmpegcsp_caps_remove_format_info (caps);
+ tmp2 = gst_caps_intersect (tmp, template);
+ gst_caps_unref (tmp);
+ tmp = tmp2;
+
+ /* Now move alpha formats to the beginning if caps is an alpha format
+ * or at the end if caps is no alpha format */
+ alpha = gst_caps_new_empty ();
+ non_alpha = gst_caps_new_empty ();
+
+ while ((s = gst_caps_steal_structure (tmp, 0))) {
+ if (gst_ffmpegcsp_structure_is_alpha (s))
+ gst_caps_append_structure (alpha, s);
+ else
+ gst_caps_append_structure (non_alpha, s);
+ }
+
+ s = gst_caps_get_structure (caps, 0);
+ gst_caps_unref (tmp);
+
+ if (gst_ffmpegcsp_structure_is_alpha (s)) {
+ gst_caps_append (alpha, non_alpha);
+ tmp = alpha;
+ } else {
+ gst_caps_append (non_alpha, alpha);
+ tmp = non_alpha;
+ }
+
+ gst_caps_append (result, tmp);
+
+ GST_DEBUG_OBJECT (btrans, "transformed %" GST_PTR_FORMAT " into %"
+ GST_PTR_FORMAT, caps, result);
+
+ return result;
+}
+
+static gboolean
+gst_ffmpegcsp_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
+ GstCaps * outcaps)
+{
+ GstFFMpegCsp *space;
+ GstStructure *structure;
+ gint in_height, in_width;
+ gint out_height, out_width;
+ const GValue *in_framerate = NULL;
+ const GValue *out_framerate = NULL;
+ const GValue *in_par = NULL;
+ const GValue *out_par = NULL;
+ AVCodecContext *ctx;
+ gboolean res;
+
+ space = GST_FFMPEGCSP (btrans);
+
+ /* parse in and output values */
+ structure = gst_caps_get_structure (incaps, 0);
+
+ /* we have to have width and height */
+ res = gst_structure_get_int (structure, "width", &in_width);
+ res &= gst_structure_get_int (structure, "height", &in_height);
+ if (!res)
+ goto no_width_height;
+
+ /* and framerate */
+ in_framerate = gst_structure_get_value (structure, "framerate");
+ if (in_framerate == NULL || !GST_VALUE_HOLDS_FRACTION (in_framerate))
+ goto no_framerate;
+
+ /* this is optional */
+ in_par = gst_structure_get_value (structure, "pixel-aspect-ratio");
+
+ structure = gst_caps_get_structure (outcaps, 0);
+
+ /* we have to have width and height */
+ res = gst_structure_get_int (structure, "width", &out_width);
+ res &= gst_structure_get_int (structure, "height", &out_height);
+ if (!res)
+ goto no_width_height;
+
+ /* and framerate */
+ out_framerate = gst_structure_get_value (structure, "framerate");
+ if (out_framerate == NULL || !GST_VALUE_HOLDS_FRACTION (out_framerate))
+ goto no_framerate;
+
+ /* this is optional */
+ out_par = gst_structure_get_value (structure, "pixel-aspect-ratio");
+
+ /* these must match */
+ if (in_width != out_width || in_height != out_height ||
+ gst_value_compare (in_framerate, out_framerate) != GST_VALUE_EQUAL)
+ goto format_mismatch;
+
+ /* if present, these must match too */
+ if (in_par && out_par
+ && gst_value_compare (in_par, out_par) != GST_VALUE_EQUAL)
+ goto format_mismatch;
+
+ ctx = avcodec_alloc_context ();
+
+ space->width = ctx->width = in_width;
+ space->height = ctx->height = in_height;
+
+ space->interlaced = FALSE;
+ gst_structure_get_boolean (structure, "interlaced", &space->interlaced);
+
+ /* get from format */
+ ctx->pix_fmt = PIX_FMT_NB;
+ gst_ffmpegcsp_caps_with_codectype (CODEC_TYPE_VIDEO, incaps, ctx);
+ if (ctx->pix_fmt == PIX_FMT_NB)
+ goto invalid_in_caps;
+ space->from_pixfmt = ctx->pix_fmt;
+
+ /* palette, only for from data */
+ if (space->palette)
+ av_free (space->palette);
+ space->palette = ctx->palctrl;
+ ctx->palctrl = NULL;
+
+ /* get to format */
+ ctx->pix_fmt = PIX_FMT_NB;
+ gst_ffmpegcsp_caps_with_codectype (CODEC_TYPE_VIDEO, outcaps, ctx);
+ if (ctx->pix_fmt == PIX_FMT_NB)
+ goto invalid_out_caps;
+ space->to_pixfmt = ctx->pix_fmt;
+
+ GST_DEBUG ("reconfigured %d %d", space->from_pixfmt, space->to_pixfmt);
+
+ av_free (ctx);
+
+ return TRUE;
+
+ /* ERRORS */
+no_width_height:
+ {
+ GST_DEBUG_OBJECT (space, "did not specify width or height");
+ space->from_pixfmt = PIX_FMT_NB;
+ space->to_pixfmt = PIX_FMT_NB;
+ return FALSE;
+ }
+no_framerate:
+ {
+ GST_DEBUG_OBJECT (space, "did not specify framerate");
+ space->from_pixfmt = PIX_FMT_NB;
+ space->to_pixfmt = PIX_FMT_NB;
+ return FALSE;
+ }
+format_mismatch:
+ {
+ GST_DEBUG_OBJECT (space, "input and output formats do not match");
+ space->from_pixfmt = PIX_FMT_NB;
+ space->to_pixfmt = PIX_FMT_NB;
+ return FALSE;
+ }
+invalid_in_caps:
+ {
+ GST_DEBUG_OBJECT (space, "could not configure context for input format");
+ av_free (ctx);
+ space->from_pixfmt = PIX_FMT_NB;
+ space->to_pixfmt = PIX_FMT_NB;
+ return FALSE;
+ }
+invalid_out_caps:
+ {
+ GST_DEBUG_OBJECT (space, "could not configure context for output format");
+ av_free (ctx);
+ space->from_pixfmt = PIX_FMT_NB;
+ space->to_pixfmt = PIX_FMT_NB;
+ return FALSE;
+ }
+}
+
+GST_BOILERPLATE (GstFFMpegCsp, gst_ffmpegcsp, GstVideoFilter,
+ GST_TYPE_VIDEO_FILTER);
+
+static void
+gst_ffmpegcsp_base_init (gpointer klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_ffmpegcsp_src_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_ffmpegcsp_sink_template));
+
+ gst_element_class_set_details_simple (element_class,
+ "FFMPEG Colorspace converter", "Filter/Converter/Video",
+ "Converts video from one colorspace to another",
+ "GStreamer maintainers <gstreamer-devel@lists.sourceforge.net>");
+
+ _QRAWRGB = g_quark_from_string ("video/x-raw-rgb");
+ _QRAWYUV = g_quark_from_string ("video/x-raw-yuv");
+ _QALPHAMASK = g_quark_from_string ("alpha_mask");
+}
+
+static void
+gst_ffmpegcsp_finalize (GObject * obj)
+{
+ GstFFMpegCsp *space = GST_FFMPEGCSP (obj);
+
+ if (space->palette)
+ av_free (space->palette);
+
+ G_OBJECT_CLASS (parent_class)->finalize (obj);
+}
+
+static void
+gst_ffmpegcsp_class_init (GstFFMpegCspClass * klass)
+{
+ GObjectClass *gobject_class = (GObjectClass *) klass;
+ GstBaseTransformClass *gstbasetransform_class =
+ (GstBaseTransformClass *) klass;
+
+ gobject_class->finalize = gst_ffmpegcsp_finalize;
+
+ gstbasetransform_class->transform_caps =
+ GST_DEBUG_FUNCPTR (gst_ffmpegcsp_transform_caps);
+ gstbasetransform_class->set_caps = GST_DEBUG_FUNCPTR (gst_ffmpegcsp_set_caps);
+ gstbasetransform_class->get_unit_size =
+ GST_DEBUG_FUNCPTR (gst_ffmpegcsp_get_unit_size);
+ gstbasetransform_class->transform =
+ GST_DEBUG_FUNCPTR (gst_ffmpegcsp_transform);
+
+ gstbasetransform_class->passthrough_on_same_caps = TRUE;
+}
+
+static void
+gst_ffmpegcsp_init (GstFFMpegCsp * space, GstFFMpegCspClass * klass)
+{
+ space->from_pixfmt = space->to_pixfmt = PIX_FMT_NB;
+ space->palette = NULL;
+}
+
+static gboolean
+gst_ffmpegcsp_get_unit_size (GstBaseTransform * btrans, GstCaps * caps,
+ guint * size)
+{
+ GstStructure *structure = NULL;
+ AVCodecContext *ctx = NULL;
+ gboolean ret = TRUE;
+ gint width, height;
+
+ g_assert (size);
+
+ structure = gst_caps_get_structure (caps, 0);
+ gst_structure_get_int (structure, "width", &width);
+ gst_structure_get_int (structure, "height", &height);
+
+ ctx = avcodec_alloc_context ();
+
+ g_assert (ctx != NULL);
+
+ ctx->pix_fmt = PIX_FMT_NB;
+
+ gst_ffmpegcsp_caps_with_codectype (CODEC_TYPE_VIDEO, caps, ctx);
+
+ if (G_UNLIKELY (ctx->pix_fmt == PIX_FMT_NB)) {
+ ret = FALSE;
+ goto beach;
+ }
+
+ *size = avpicture_get_size (ctx->pix_fmt, width, height);
+
+ /* ffmpeg frames have the palette after the frame data, whereas
+ * GStreamer currently puts it into the caps as 'palette_data' field,
+ * so for paletted data the frame size avpicture_get_size() returns is
+ * 1024 bytes larger than what GStreamer expects. */
+ if (gst_structure_has_field (structure, "palette_data") &&
+ ctx->pix_fmt == PIX_FMT_PAL8) {
+ *size -= 4 * 256; /* = AVPALETTE_SIZE */
+ }
+
+beach:
+
+ if (ctx->palctrl)
+ av_free (ctx->palctrl);
+ av_free (ctx);
+
+ return ret;
+}
+
+static GstFlowReturn
+gst_ffmpegcsp_transform (GstBaseTransform * btrans, GstBuffer * inbuf,
+ GstBuffer * outbuf)
+{
+ GstFFMpegCsp *space;
+ gint result;
+
+ space = GST_FFMPEGCSP (btrans);
+
+ GST_DEBUG ("from %d -> to %d", space->from_pixfmt, space->to_pixfmt);
+
+ if (G_UNLIKELY (space->from_pixfmt == PIX_FMT_NB ||
+ space->to_pixfmt == PIX_FMT_NB))
+ goto unknown_format;
+
+ /* fill from with source data */
+ gst_ffmpegcsp_avpicture_fill (&space->from_frame,
+ GST_BUFFER_DATA (inbuf), space->from_pixfmt, space->width, space->height,
+ space->interlaced);
+
+ /* fill optional palette */
+ if (space->palette)
+ space->from_frame.data[1] = (uint8_t *) space->palette->palette;
+
+ /* fill target frame */
+ gst_ffmpegcsp_avpicture_fill (&space->to_frame,
+ GST_BUFFER_DATA (outbuf), space->to_pixfmt, space->width, space->height,
+ space->interlaced);
+
+ /* and convert */
+ result = img_convert (&space->to_frame, space->to_pixfmt,
+ &space->from_frame, space->from_pixfmt, space->width, space->height);
+ if (result == -1)
+ goto not_supported;
+
+ /* baseclass copies timestamps */
+ GST_DEBUG ("from %d -> to %d done", space->from_pixfmt, space->to_pixfmt);
+
+ return GST_FLOW_OK;
+
+ /* ERRORS */
+unknown_format:
+ {
+ GST_ELEMENT_ERROR (space, CORE, NOT_IMPLEMENTED, (NULL),
+ ("attempting to convert colorspaces between unknown formats"));
+ return GST_FLOW_NOT_NEGOTIATED;
+ }
+not_supported:
+ {
+ GST_ELEMENT_ERROR (space, CORE, NOT_IMPLEMENTED, (NULL),
+ ("cannot convert between formats"));
+ return GST_FLOW_NOT_SUPPORTED;
+ }
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ GST_DEBUG_CATEGORY_INIT (ffmpegcolorspace_debug, "ffmpegcolorspace", 0,
+ "FFMPEG-based colorspace converter");
+ GST_DEBUG_CATEGORY_GET (ffmpegcolorspace_performance, "GST_PERFORMANCE");
+
+ avcodec_init ();
+
+ return gst_element_register (plugin, "ffmpegcolorspace",
+ GST_RANK_NONE, GST_TYPE_FFMPEGCSP);
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "ffmpegcolorspace",
+ "colorspace conversion copied from FFMpeg " FFMPEG_VERSION,
+ plugin_init, VERSION, "LGPL", "FFMpeg", "http://ffmpeg.sourceforge.net/")
projects / mafwsubrenderer / blobdiff