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2c3ddfeac7
Original commit message from CVS: fix up ffmpegcolorspace docs; extract header
394 lines
11 KiB
C
394 lines
11 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* This file:
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* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-ffmpegcolorspace
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*
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* <refsect2>
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* <title>Example launch line</title>
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* <para>
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* <programlisting>
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* gst-launch -v videotestsrc ! video/x-raw-yuv,format=\(fourcc\)YUY2 ! ffmpegcolorspace ! ximagesink
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* </programlisting>
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* </para>
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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "gstffmpegcolorspace.h"
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#include "gstffmpegcodecmap.h"
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GST_DEBUG_CATEGORY (ffmpegcolorspace_debug);
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#define GST_CAT_DEFAULT ffmpegcolorspace_debug
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/* elementfactory information */
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static GstElementDetails ffmpegcsp_details = {
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"FFMPEG Colorspace converter",
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"Filter/Converter/Video",
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"Converts video from one colorspace to another",
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"Ronald Bultje <rbultje@ronald.bitfreak.net>",
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};
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/* Stereo signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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ARG_0,
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};
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static GType gst_ffmpegcsp_get_type (void);
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static void gst_ffmpegcsp_base_init (GstFFMpegCspClass * klass);
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static void gst_ffmpegcsp_class_init (GstFFMpegCspClass * klass);
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static void gst_ffmpegcsp_init (GstFFMpegCsp * space);
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static gboolean gst_ffmpegcsp_set_caps (GstBaseTransform * btrans,
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GstCaps * incaps, GstCaps * outcaps);
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static gboolean gst_ffmpegcsp_get_unit_size (GstBaseTransform * btrans,
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GstCaps * caps, guint * size);
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static GstFlowReturn gst_ffmpegcsp_transform (GstBaseTransform * btrans,
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GstBuffer * inbuf, GstBuffer * outbuf);
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#if 0
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static GstFlowReturn gst_ffmpegcsp_transform_ip (GstBaseTransform * btrans,
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GstBuffer * inbuf);
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#endif
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static GstPadTemplate *sinktempl, *srctempl;
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static GstElementClass *parent_class = NULL;
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/*static guint gst_ffmpegcsp_signals[LAST_SIGNAL] = { 0 }; */
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static GstCaps *
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gst_ffmpegcsp_caps_remove_format_info (GstCaps * caps)
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{
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int i;
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GstStructure *structure;
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GstCaps *rgbcaps;
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caps = gst_caps_copy (caps);
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for (i = 0; i < gst_caps_get_size (caps); i++) {
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structure = gst_caps_get_structure (caps, i);
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gst_structure_set_name (structure, "video/x-raw-yuv");
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gst_structure_remove_field (structure, "format");
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gst_structure_remove_field (structure, "endianness");
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gst_structure_remove_field (structure, "depth");
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gst_structure_remove_field (structure, "bpp");
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gst_structure_remove_field (structure, "red_mask");
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gst_structure_remove_field (structure, "green_mask");
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gst_structure_remove_field (structure, "blue_mask");
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gst_structure_remove_field (structure, "alpha_mask");
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}
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gst_caps_do_simplify (caps);
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rgbcaps = gst_caps_copy (caps);
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for (i = 0; i < gst_caps_get_size (rgbcaps); i++) {
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structure = gst_caps_get_structure (rgbcaps, i);
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gst_structure_set_name (structure, "video/x-raw-rgb");
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}
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gst_caps_append (caps, rgbcaps);
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return caps;
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}
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static GstCaps *
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gst_ffmpegcsp_transform_caps (GstBaseTransform * btrans,
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GstPadDirection direction, GstCaps * caps)
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{
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GstFFMpegCsp *space;
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GstCaps *result;
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space = GST_FFMPEGCSP (btrans);
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result = gst_ffmpegcsp_caps_remove_format_info (caps);
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return result;
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}
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static gboolean
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gst_ffmpegcsp_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
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GstCaps * outcaps)
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{
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GstFFMpegCsp *space;
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GstStructure *structure;
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gint in_height, in_width;
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gint out_height, out_width;
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gdouble in_framerate, out_framerate;
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const GValue *in_par = NULL;
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const GValue *out_par = NULL;
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AVCodecContext *ctx;
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space = GST_FFMPEGCSP (btrans);
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/* parse in and output values */
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structure = gst_caps_get_structure (incaps, 0);
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gst_structure_get_int (structure, "width", &in_width);
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gst_structure_get_int (structure, "height", &in_height);
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gst_structure_get_double (structure, "framerate", &in_framerate);
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in_par = gst_structure_get_value (structure, "pixel-aspect-ratio");
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structure = gst_caps_get_structure (outcaps, 0);
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gst_structure_get_int (structure, "width", &out_width);
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gst_structure_get_int (structure, "height", &out_height);
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gst_structure_get_double (structure, "framerate", &out_framerate);
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out_par = gst_structure_get_value (structure, "pixel-aspect-ratio");
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if (in_width != out_width || in_height != out_height ||
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in_framerate != out_framerate)
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goto format_mismatch;
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if (in_par && out_par
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&& gst_value_compare (in_par, out_par) != GST_VALUE_EQUAL)
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goto format_mismatch;
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ctx = avcodec_alloc_context ();
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space->width = ctx->width = in_width;
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space->height = ctx->height = in_height;
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/* get from format */
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ctx->pix_fmt = PIX_FMT_NB;
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gst_ffmpegcsp_caps_with_codectype (CODEC_TYPE_VIDEO, incaps, ctx);
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if (ctx->pix_fmt == PIX_FMT_NB)
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goto invalid_in_caps;
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space->from_pixfmt = ctx->pix_fmt;
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/* palette, only for from data */
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if (space->palette)
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av_free (space->palette);
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space->palette = ctx->palctrl;
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/* get to format */
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ctx->pix_fmt = PIX_FMT_NB;
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gst_ffmpegcsp_caps_with_codectype (CODEC_TYPE_VIDEO, outcaps, ctx);
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if (ctx->pix_fmt == PIX_FMT_NB)
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goto invalid_out_caps;
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space->to_pixfmt = ctx->pix_fmt;
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GST_DEBUG ("reconfigured %d %d", space->from_pixfmt, space->to_pixfmt);
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av_free (ctx);
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return TRUE;
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/* ERRORS */
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format_mismatch:
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{
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GST_DEBUG ("input and output formats do not match");
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space->from_pixfmt = PIX_FMT_NB;
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space->to_pixfmt = PIX_FMT_NB;
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return FALSE;
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}
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invalid_in_caps:
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{
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GST_DEBUG ("could not configure context for input format");
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av_free (ctx);
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space->from_pixfmt = PIX_FMT_NB;
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space->to_pixfmt = PIX_FMT_NB;
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return FALSE;
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}
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invalid_out_caps:
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{
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GST_DEBUG ("could not configure context for output format");
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av_free (ctx);
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space->from_pixfmt = PIX_FMT_NB;
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space->to_pixfmt = PIX_FMT_NB;
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return FALSE;
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}
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}
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static GType
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gst_ffmpegcsp_get_type (void)
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{
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static GType ffmpegcsp_type = 0;
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if (!ffmpegcsp_type) {
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static const GTypeInfo ffmpegcsp_info = {
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sizeof (GstFFMpegCspClass),
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(GBaseInitFunc) gst_ffmpegcsp_base_init,
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NULL,
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(GClassInitFunc) gst_ffmpegcsp_class_init,
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NULL,
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NULL,
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sizeof (GstFFMpegCsp),
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0,
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(GInstanceInitFunc) gst_ffmpegcsp_init,
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};
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ffmpegcsp_type = g_type_register_static (GST_TYPE_BASE_TRANSFORM,
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"GstFFMpegColorspace", &ffmpegcsp_info, 0);
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}
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return ffmpegcsp_type;
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}
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static void
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gst_ffmpegcsp_base_init (GstFFMpegCspClass * klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gst_element_class_add_pad_template (element_class, srctempl);
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gst_element_class_add_pad_template (element_class, sinktempl);
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gst_element_class_set_details (element_class, &ffmpegcsp_details);
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}
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static void
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gst_ffmpegcsp_class_init (GstFFMpegCspClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBaseTransformClass *gstbasetransform_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstbasetransform_class = (GstBaseTransformClass *) klass;
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parent_class = g_type_class_ref (GST_TYPE_BASE_TRANSFORM);
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gstbasetransform_class->transform_caps =
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GST_DEBUG_FUNCPTR (gst_ffmpegcsp_transform_caps);
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gstbasetransform_class->set_caps = GST_DEBUG_FUNCPTR (gst_ffmpegcsp_set_caps);
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gstbasetransform_class->get_unit_size =
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GST_DEBUG_FUNCPTR (gst_ffmpegcsp_get_unit_size);
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gstbasetransform_class->transform =
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GST_DEBUG_FUNCPTR (gst_ffmpegcsp_transform);
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#if 0
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gstbasetransform_class->transform_ip =
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GST_DEBUG_FUNCPTR (gst_ffmpegcsp_transform_ip);
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#endif
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gstbasetransform_class->passthrough_on_same_caps = TRUE;
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GST_DEBUG_CATEGORY_INIT (ffmpegcolorspace_debug, "ffmpegcolorspace", 0,
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"FFMPEG-based colorspace converter");
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}
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static void
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gst_ffmpegcsp_init (GstFFMpegCsp * space)
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{
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space->from_pixfmt = space->to_pixfmt = PIX_FMT_NB;
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space->palette = NULL;
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}
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static gboolean
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gst_ffmpegcsp_get_unit_size (GstBaseTransform * btrans, GstCaps * caps,
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guint * size)
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{
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GstFFMpegCsp *space;
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g_return_val_if_fail (size, FALSE);
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space = GST_FFMPEGCSP (btrans);
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if (gst_caps_is_equal (caps, GST_PAD_CAPS (btrans->srcpad))) {
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*size = avpicture_get_size (space->to_pixfmt, space->width, space->height);
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} else if (gst_caps_is_equal (caps, GST_PAD_CAPS (btrans->sinkpad))) {
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*size =
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avpicture_get_size (space->from_pixfmt, space->width, space->height);
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}
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return TRUE;
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}
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#if 0
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/* FIXME: Could use transform_ip to implement endianness swap type operations */
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static GstFlowReturn
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gst_ffmpegcsp_transform_ip (GstBaseTransform * btrans, GstBuffer * inbuf)
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{
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/* do nothing */
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return GST_FLOW_OK;
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}
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#endif
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static GstFlowReturn
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gst_ffmpegcsp_transform (GstBaseTransform * btrans, GstBuffer * inbuf,
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GstBuffer * outbuf)
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{
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GstFFMpegCsp *space;
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space = GST_FFMPEGCSP (btrans);
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GST_DEBUG ("from %d -> to %d", space->from_pixfmt, space->to_pixfmt);
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if (space->from_pixfmt == PIX_FMT_NB || space->to_pixfmt == PIX_FMT_NB)
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goto unknown_format;
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/* fill from with source data */
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gst_ffmpegcsp_avpicture_fill (&space->from_frame,
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GST_BUFFER_DATA (inbuf), space->from_pixfmt, space->width, space->height);
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/* fill optional palette */
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if (space->palette)
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space->from_frame.data[1] = (uint8_t *) space->palette;
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/* fill target frame */
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gst_ffmpegcsp_avpicture_fill (&space->to_frame,
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GST_BUFFER_DATA (outbuf), space->to_pixfmt, space->width, space->height);
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/* and convert */
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img_convert (&space->to_frame, space->to_pixfmt,
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&space->from_frame, space->from_pixfmt, space->width, space->height);
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/* copy timestamps */
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gst_buffer_stamp (outbuf, inbuf);
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GST_DEBUG ("from %d -> to %d done", space->from_pixfmt, space->to_pixfmt);
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return GST_FLOW_OK;
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/* ERRORS */
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unknown_format:
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{
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GST_ELEMENT_ERROR (space, CORE, NOT_IMPLEMENTED, (NULL),
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("attempting to convert colorspaces between unknown formats"));
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return GST_FLOW_NOT_NEGOTIATED;
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}
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}
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gboolean
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gst_ffmpegcolorspace_register (GstPlugin * plugin)
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{
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GstCaps *caps;
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/* template caps */
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caps = gst_ffmpegcsp_codectype_to_caps (CODEC_TYPE_VIDEO, NULL);
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/* build templates */
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srctempl = gst_pad_template_new ("src",
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GST_PAD_SRC, GST_PAD_ALWAYS, gst_caps_copy (caps));
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/* the sink template will do palette handling as well... */
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sinktempl = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, caps);
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return gst_element_register (plugin, "ffmpegcolorspace",
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GST_RANK_NONE, GST_TYPE_FFMPEGCSP);
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}
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