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Original commit message from CVS: * gst/wavenc/gstwavenc.c: (gst_wavenc_base_init), (gst_wavenc_class_init), (gst_wavenc_init), (gst_wavenc_create_header_buf), (gst_wavenc_push_header), (gst_wavenc_sink_setcaps), (get_id_from_name), (gst_wavenc_event), (gst_wavenc_chain), (gst_wavenc_change_state): * gst/wavenc/gstwavenc.h: Set caps on first outgoing buffer, so that it doesn't error out immediately with a non-negotiated error (#338716). Rewrite and clean up a bit; fix setcaps function to parse things properly; fix sink caps (8bit audio is unsigned and doesn't have depth); use boilerplate macros; remove unused properties stuff.
669 lines
18 KiB
C
669 lines
18 KiB
C
/* -*- mOde: C; tab-width: 2; indent-tabs-mode: t; c-basic-offset: 2 -*- */
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/* GStreamer .wav encoder
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* Copyright (C) <2002> Iain Holmes <iain@prettypeople.org>
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* Copyright (C) <2006> Tim-Philipp Müller <tim centricular 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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "gstwavenc.h"
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#include "riff.h"
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GST_DEBUG_CATEGORY_STATIC (wavenc_debug);
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#define GST_CAT_DEFAULT wavenc_debug
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#define WAVE_FORMAT_PCM 0x0001
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struct riff_struct
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{
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guint8 id[4]; /* RIFF */
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guint32 len;
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guint8 wav_id[4]; /* WAVE */
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};
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struct chunk_struct
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{
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guint8 id[4];
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guint32 len;
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};
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struct common_struct
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{
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guint16 wFormatTag;
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guint16 wChannels;
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guint32 dwSamplesPerSec;
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guint32 dwAvgBytesPerSec;
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guint16 wBlockAlign;
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guint16 wBitsPerSample; /* Only for PCM */
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};
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struct wave_header
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{
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struct riff_struct riff;
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struct chunk_struct format;
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struct common_struct common;
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struct chunk_struct data;
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};
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static const GstElementDetails gst_wavenc_details =
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GST_ELEMENT_DETAILS ("WAV audio muxer",
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"Codec/Muxer/Audio",
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"Encode raw audio into WAV",
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"Iain Holmes <iain@prettypeople.org>");
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/* FIXME: mono doesn't produce correct files it seems, at least mplayer xruns */
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/* Max. of two channels, more channels need WAVFORMATEX with
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* channel layout, which we do not support yet */
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#define SINK_CAPS \
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"audio/x-raw-int, " \
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"rate = (int) [ 1, MAX ], " \
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"channels = (int) [ 1, 2 ], " \
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"endianness = (int) LITTLE_ENDIAN, " \
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"width = (int) 16, " \
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"depth = (int) 16, " \
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"signed = (boolean) true" \
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"; " \
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"audio/x-raw-int, " \
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"rate = (int) [ 1, MAX ], " \
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"channels = (int) [ 1, 2 ], " \
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"width = (int) 8, " \
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"signed = (boolean) false"
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static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (SINK_CAPS)
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);
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static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-wav")
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);
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GST_BOILERPLATE (GstWavEnc, gst_wavenc, GstElement, GST_TYPE_ELEMENT);
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static GstFlowReturn gst_wavenc_chain (GstPad * pad, GstBuffer * buf);
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static gboolean gst_wavenc_event (GstPad * pad, GstEvent * event);
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static GstStateChangeReturn gst_wavenc_change_state (GstElement * element,
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GstStateChange transition);
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static gboolean gst_wavenc_sink_setcaps (GstPad * pad, GstCaps * caps);
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static void
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gst_wavenc_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_set_details (element_class, &gst_wavenc_details);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_factory));
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GST_DEBUG_CATEGORY_INIT (wavenc_debug, "wavenc", 0, "WAV encoder element");
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}
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static void
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gst_wavenc_class_init (GstWavEncClass * klass)
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{
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GstElementClass *element_class;
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element_class = (GstElementClass *) klass;
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element_class->change_state = GST_DEBUG_FUNCPTR (gst_wavenc_change_state);
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}
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static void
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gst_wavenc_init (GstWavEnc * wavenc, GstWavEncClass * klass)
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{
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wavenc->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
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gst_pad_set_chain_function (wavenc->sinkpad,
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GST_DEBUG_FUNCPTR (gst_wavenc_chain));
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gst_pad_set_event_function (wavenc->sinkpad,
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GST_DEBUG_FUNCPTR (gst_wavenc_event));
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gst_pad_set_setcaps_function (wavenc->sinkpad,
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GST_DEBUG_FUNCPTR (gst_wavenc_sink_setcaps));
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gst_element_add_pad (GST_ELEMENT (wavenc), wavenc->sinkpad);
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wavenc->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
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gst_pad_use_fixed_caps (wavenc->srcpad);
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gst_pad_set_caps (wavenc->srcpad,
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gst_static_pad_template_get_caps (&src_factory));
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gst_element_add_pad (GST_ELEMENT (wavenc), wavenc->srcpad);
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}
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#define WAV_HEADER_LEN 44
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/* FIXME: we are probably not handling depth != width correctly here */
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static GstBuffer *
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gst_wavenc_create_header_buf (GstWavEnc * wavenc, guint audio_data_size)
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{
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struct wave_header wave;
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GstBuffer *buf;
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guint8 *header;
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buf = gst_buffer_new_and_alloc (WAV_HEADER_LEN);
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header = GST_BUFFER_DATA (buf);
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memset (header, 0, WAV_HEADER_LEN);
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wave.common.wChannels = wavenc->channels;
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wave.common.wBitsPerSample = wavenc->depth;
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wave.common.dwSamplesPerSec = wavenc->rate;
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/* Fill out our wav-header with some information */
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memcpy (wave.riff.id, "RIFF", 4);
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wave.riff.len = audio_data_size + WAV_HEADER_LEN - 8;
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memcpy (wave.riff.wav_id, "WAVE", 4);
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memcpy (wave.format.id, "fmt ", 4);
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wave.format.len = 16;
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wave.common.wFormatTag = WAVE_FORMAT_PCM;
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wave.common.dwAvgBytesPerSec =
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wave.common.wChannels * wave.common.dwSamplesPerSec *
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(wave.common.wBitsPerSample >> 3);
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wave.common.wBlockAlign =
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wave.common.wChannels * (wave.common.wBitsPerSample >> 3);
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memcpy (wave.data.id, "data", 4);
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wave.data.len = audio_data_size;
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memcpy (header, (char *) wave.riff.id, 4);
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GST_WRITE_UINT32_LE (header + 4, wave.riff.len);
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memcpy (header + 8, (char *) wave.riff.wav_id, 4);
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memcpy (header + 12, (char *) wave.format.id, 4);
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GST_WRITE_UINT32_LE (header + 16, wave.format.len);
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GST_WRITE_UINT16_LE (header + 20, wave.common.wFormatTag);
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GST_WRITE_UINT16_LE (header + 22, wave.common.wChannels);
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GST_WRITE_UINT32_LE (header + 24, wave.common.dwSamplesPerSec);
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GST_WRITE_UINT32_LE (header + 28, wave.common.dwAvgBytesPerSec);
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GST_WRITE_UINT16_LE (header + 32, wave.common.wBlockAlign);
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GST_WRITE_UINT16_LE (header + 34, wave.common.wBitsPerSample);
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memcpy (header + 36, (char *) wave.data.id, 4);
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GST_WRITE_UINT32_LE (header + 40, wave.data.len);
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gst_buffer_set_caps (buf, GST_PAD_CAPS (wavenc->srcpad));
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return buf;
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}
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static GstFlowReturn
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gst_wavenc_push_header (GstWavEnc * wavenc, guint audio_data_size)
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{
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GstFlowReturn ret;
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GstBuffer *outbuf;
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/* seek to beginning of file */
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gst_pad_push_event (wavenc->srcpad,
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gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
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0, GST_CLOCK_TIME_NONE, 0));
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GST_DEBUG_OBJECT (wavenc, "writing header with datasize=%u", audio_data_size);
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outbuf = gst_wavenc_create_header_buf (wavenc, audio_data_size);
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GST_BUFFER_OFFSET (outbuf) = 0;
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ret = gst_pad_push (wavenc->srcpad, outbuf);
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if (ret != GST_FLOW_OK) {
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GST_WARNING_OBJECT (wavenc, "push header failed: flow = %s",
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gst_flow_get_name (ret));
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}
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return ret;
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}
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static gboolean
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gst_wavenc_sink_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstWavEnc *wavenc;
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GstStructure *structure;
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gint chans, rate, width, depth;
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wavenc = GST_WAVENC (gst_pad_get_parent (pad));
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if (wavenc->sent_header) {
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GST_WARNING_OBJECT (wavenc, "cannot change format in middle of stream");
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goto fail;
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}
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GST_DEBUG_OBJECT (wavenc, "got caps: %" GST_PTR_FORMAT, caps);
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structure = gst_caps_get_structure (caps, 0);
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if (!gst_structure_get_int (structure, "channels", &chans) ||
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!gst_structure_get_int (structure, "rate", &rate) ||
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!gst_structure_get_int (structure, "width", &width) ||
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(width != 8 && !gst_structure_get_int (structure, "depth", &depth))) {
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GST_WARNING_OBJECT (wavenc, "caps incomplete");
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goto fail;
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}
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wavenc->channels = chans;
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wavenc->width = width;
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wavenc->depth = (width == 8) ? 8 : depth;
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wavenc->rate = rate;
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GST_LOG_OBJECT (wavenc, "accepted caps: chans=%u width=%u depth=%u rate=%u",
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wavenc->channels, wavenc->width, wavenc->depth, wavenc->rate);
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gst_object_unref (wavenc);
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return TRUE;
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fail:
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gst_object_unref (wavenc);
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return FALSE;
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}
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#if 0
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static struct _maps
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{
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const guint32 id;
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const gchar *name;
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} maps[] = {
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{
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GST_RIFF_INFO_IARL, "Location"}, {
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GST_RIFF_INFO_IART, "Artist"}, {
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GST_RIFF_INFO_ICMS, "Commissioner"}, {
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GST_RIFF_INFO_ICMT, "Comment"}, {
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GST_RIFF_INFO_ICOP, "Copyright"}, {
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GST_RIFF_INFO_ICRD, "Creation Date"}, {
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GST_RIFF_INFO_IENG, "Engineer"}, {
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GST_RIFF_INFO_IGNR, "Genre"}, {
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GST_RIFF_INFO_IKEY, "Keywords"}, {
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GST_RIFF_INFO_INAM, "Title"}, {
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GST_RIFF_INFO_IPRD, "Product"}, {
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GST_RIFF_INFO_ISBJ, "Subject"}, {
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GST_RIFF_INFO_ISFT, "Software"}, {
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GST_RIFF_INFO_ITCH, "Technician"}
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};
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static guint32
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get_id_from_name (const char *name)
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{
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int i;
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for (i = 0; i < G_N_ELEMENTS (maps); i++) {
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if (strcasecmp (maps[i].name, name) == 0) {
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return maps[i].id;
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}
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}
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return 0;
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}
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static void
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write_metadata (GstWavEnc * wavenc)
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{
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GString *info_str;
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GList *props;
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int total = 4;
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gboolean need_to_write = FALSE;
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info_str = g_string_new ("LIST INFO");
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for (props = wavenc->metadata->properties->properties; props;
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props = props->next) {
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GstPropsEntry *entry = props->data;
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const char *name;
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guint32 id;
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name = gst_props_entry_get_name (entry);
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id = get_id_from_name (name);
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if (id != 0) {
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const char *text;
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char *tmp;
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int len, req, i;
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need_to_write = TRUE; /* We've got at least one entry */
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gst_props_entry_get_string (entry, &text);
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len = strlen (text) + 1; /* The length in the file includes the \0 */
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tmp = g_strdup_printf ("%" GST_FOURCC_FORMAT "%d%s", GST_FOURCC_ARGS (id),
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GUINT32_TO_LE (len), text);
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g_string_append (info_str, tmp);
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g_free (tmp);
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/* Check that we end on an even boundary */
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req = ((len + 8) + 1) & ~1;
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for (i = 0; i < req - len; i++) {
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g_string_append_printf (info_str, "%c", 0);
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}
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total += req;
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}
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}
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if (need_to_write) {
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GstBuffer *buf;
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/* Now we've got all the strings together, we can write our length in */
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info_str->str[4] = GUINT32_TO_LE (total);
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buf = gst_buffer_new ();
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gst_buffer_set_data (buf, info_str->str, info_str->len);
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gst_pad_push (wavenc->srcpad, GST_DATA (buf));
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g_string_free (info_str, FALSE);
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}
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}
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static void
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write_cues (GstWavEnc * wavenc)
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{
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GString *cue_string, *point_string;
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GstBuffer *buf;
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GList *cue_list, *c;
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int num_cues, total = 4;
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if (gst_props_get (wavenc->metadata->properties,
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"cues", &cue_list, NULL) == FALSE) {
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/* No cues, move along please, nothing to see here */
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return;
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}
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/* Space for 'cue ', chunk size and number of cuepoints */
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cue_string = g_string_new ("cue ");
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#define CUEPOINT_SIZE 24
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point_string = g_string_sized_new (CUEPOINT_SIZE);
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for (c = cue_list, num_cues = 0; c; c = c->next, num_cues++) {
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GstCaps *cue_caps = c->data;
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guint32 pos;
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gst_props_get (cue_caps->properties, "position", &pos, NULL);
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point_string->str[0] = GUINT32_TO_LE (num_cues + 1);
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point_string->str[4] = GUINT32_TO_LE (0);
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/* Fixme: There is probably a macro for this */
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point_string->str[8] = 'd';
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point_string->str[9] = 'a';
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point_string->str[10] = 't';
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point_string->str[11] = 'a';
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point_string->str[12] = GUINT32_TO_LE (0);
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point_string->str[16] = GUINT32_TO_LE (0);
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point_string->str[20] = GUINT32_TO_LE (pos);
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total += CUEPOINT_SIZE;
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}
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/* Set the length and chunk size */
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cue_string->str[4] = GUINT32_TO_LE (total);
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cue_string->str[8] = GUINT32_TO_LE (num_cues);
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/* Stick the cue points on the end */
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g_string_append (cue_string, point_string->str);
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g_string_free (point_string, TRUE);
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buf = gst_buffer_new ();
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gst_buffer_set_data (buf, cue_string->str, cue_string->len);
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gst_pad_push (wavenc->srcpad, GST_DATA (buf));
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g_string_free (cue_string, FALSE);
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}
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static void
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write_labels (GstWavEnc * wavenc)
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{
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GstBuffer *buf;
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GString *info_str;
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int total = 4;
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GList *caps;
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info_str = g_string_new ("LIST adtl");
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if (gst_props_get (wavenc->metadata->properties, "ltxts", &caps, NULL)) {
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GList *p;
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int i;
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for (p = caps, i = 1; p; p = p->next, i++) {
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GstCaps *ltxt_caps = p->data;
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GString *ltxt;
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char *label = NULL;
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int len, req, j;
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gst_props_get (ltxt_caps->properties, "name", &label, NULL);
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len = strlen (label);
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#define LTXT_SIZE 28
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ltxt = g_string_new ("ltxt ");
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ltxt->str[8] = GUINT32_TO_LE (i); /* Identifier */
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ltxt->str[12] = GUINT32_TO_LE (0); /* Sample Length */
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ltxt->str[16] = GUINT32_TO_LE (0); /* FIXME: Don't save the purpose yet */
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ltxt->str[20] = GUINT16_TO_LE (0); /* Country */
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ltxt->str[22] = GUINT16_TO_LE (0); /* Language */
|
|
ltxt->str[24] = GUINT16_TO_LE (0); /* Dialect */
|
|
ltxt->str[26] = GUINT16_TO_LE (0); /* Code Page */
|
|
g_string_append (ltxt, label);
|
|
g_free (label);
|
|
|
|
len += LTXT_SIZE;
|
|
|
|
ltxt->str[4] = GUINT32_TO_LE (len);
|
|
|
|
/* Check that we end on an even boundary */
|
|
req = ((len + 8) + 1) & ~1;
|
|
for (j = 0; j < req - len; j++) {
|
|
g_string_append_printf (ltxt, "%c", 0);
|
|
}
|
|
|
|
total += req;
|
|
|
|
g_string_append (info_str, ltxt->str);
|
|
g_string_free (ltxt, TRUE);
|
|
}
|
|
}
|
|
|
|
if (gst_props_get (wavenc->metadata->properties, "labels", &caps, NULL)) {
|
|
GList *p;
|
|
int i;
|
|
|
|
for (p = caps, i = 1; p; p = p->next, i++) {
|
|
GstCaps *labl_caps = p->data;
|
|
GString *labl;
|
|
char *label = NULL;
|
|
int len, req, j;
|
|
|
|
gst_props_get (labl_caps->properties, "name", &label, NULL);
|
|
len = strlen (label);
|
|
|
|
#define LABL_SIZE 4
|
|
labl = g_string_new ("labl ");
|
|
labl->str[8] = GUINT32_TO_LE (i);
|
|
g_string_append (labl, label);
|
|
g_free (label);
|
|
|
|
len += LABL_SIZE;
|
|
|
|
labl->str[4] = GUINT32_TO_LE (len);
|
|
|
|
/* Check our size */
|
|
req = ((len + 8) + 1) & ~1;
|
|
for (j = 0; j < req - len; j++) {
|
|
g_string_append_printf (labl, "%c", 0);
|
|
}
|
|
|
|
total += req;
|
|
|
|
g_string_append (info_str, labl->str);
|
|
g_string_free (labl, TRUE);
|
|
}
|
|
}
|
|
|
|
if (gst_props_get (wavenc->metadata->properties, "notes", &caps, NULL)) {
|
|
GList *p;
|
|
int i;
|
|
|
|
for (p = caps, i = 1; p; p = p->next, i++) {
|
|
GstCaps *note_caps = p->data;
|
|
GString *note;
|
|
char *label = NULL;
|
|
int len, req, j;
|
|
|
|
gst_props_get (note_caps->properties, "name", &label, NULL);
|
|
len = strlen (label);
|
|
|
|
#define NOTE_SIZE 4
|
|
note = g_string_new ("note ");
|
|
note->str[8] = GUINT32_TO_LE (i);
|
|
g_string_append (note, label);
|
|
g_free (label);
|
|
|
|
len += NOTE_SIZE;
|
|
|
|
note->str[4] = GUINT32_TO_LE (len);
|
|
|
|
/* Size check */
|
|
req = ((len + 8) + 1) & ~1;
|
|
for (j = 0; j < req - len; j++) {
|
|
g_string_append_printf (note, "%c", 0);
|
|
}
|
|
|
|
total += req;
|
|
|
|
g_string_append (info_str, note->str);
|
|
g_string_free (note, TRUE);
|
|
}
|
|
}
|
|
|
|
info_str->str[4] = GUINT32_TO_LE (total);
|
|
|
|
buf = gst_buffer_new ();
|
|
gst_buffer_set_data (buf, info_str->str, info_str->len);
|
|
|
|
gst_pad_push (wavenc->srcpad, GST_DATA (buf));
|
|
g_string_free (info_str, FALSE);
|
|
}
|
|
#endif
|
|
|
|
static gboolean
|
|
gst_wavenc_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
gboolean res = TRUE;
|
|
GstWavEnc *wavenc;
|
|
|
|
wavenc = GST_WAVENC (gst_pad_get_parent (pad));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_EOS:{
|
|
GST_DEBUG_OBJECT (wavenc, "got EOS");
|
|
#if 0
|
|
/* Write our metadata if we have any */
|
|
if (wavenc->metadata) {
|
|
write_metadata (wavenc);
|
|
write_cues (wavenc);
|
|
write_labels (wavenc);
|
|
}
|
|
#endif
|
|
/* write header with correct length values */
|
|
gst_wavenc_push_header (wavenc, wavenc->length);
|
|
|
|
/* and forward the EOS event */
|
|
res = gst_pad_event_default (pad, event);
|
|
break;
|
|
}
|
|
case GST_EVENT_NEWSEGMENT:
|
|
/* Just drop it, it's probably in TIME format
|
|
* anyway. We'll send our own newsegment event */
|
|
gst_event_unref (event);
|
|
break;
|
|
default:
|
|
res = gst_pad_event_default (pad, event);
|
|
break;
|
|
}
|
|
|
|
gst_object_unref (wavenc);
|
|
return res;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_wavenc_chain (GstPad * pad, GstBuffer * buf)
|
|
{
|
|
GstWavEnc *wavenc = GST_WAVENC (GST_PAD_PARENT (pad));
|
|
GstFlowReturn flow = GST_FLOW_OK;
|
|
|
|
g_return_val_if_fail (wavenc->channels > 0, GST_FLOW_WRONG_STATE);
|
|
|
|
if (!wavenc->sent_header) {
|
|
/* use bogus size initially, we'll write the real
|
|
* header when we get EOS and know the exact length */
|
|
flow = gst_wavenc_push_header (wavenc, 0x7FFF0000);
|
|
|
|
if (flow != GST_FLOW_OK)
|
|
return flow;
|
|
|
|
GST_DEBUG_OBJECT (wavenc, "wrote dummy header");
|
|
wavenc->sent_header = TRUE;
|
|
}
|
|
|
|
wavenc->length += GST_BUFFER_SIZE (buf);
|
|
|
|
GST_LOG_OBJECT (wavenc, "pushing %u bytes raw audio, ts=%" GST_TIME_FORMAT,
|
|
GST_BUFFER_SIZE (buf), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
|
|
|
|
buf = gst_buffer_make_metadata_writable (buf);
|
|
gst_buffer_set_caps (buf, GST_PAD_CAPS (wavenc->srcpad));
|
|
GST_BUFFER_OFFSET (buf) = WAV_HEADER_LEN + wavenc->length;
|
|
GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
|
|
|
|
flow = gst_pad_push (wavenc->srcpad, buf);
|
|
|
|
return flow;
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_wavenc_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
|
GstWavEnc *wavenc = GST_WAVENC (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
wavenc->channels = 0;
|
|
wavenc->width = 0;
|
|
wavenc->depth = 0;
|
|
wavenc->rate = 0;
|
|
wavenc->length = 0;
|
|
wavenc->sent_header = FALSE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = parent_class->change_state (element, transition);
|
|
if (ret != GST_STATE_CHANGE_SUCCESS)
|
|
return ret;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
return gst_element_register (plugin, "wavenc", GST_RANK_NONE,
|
|
GST_TYPE_WAVENC);
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
"wavenc",
|
|
"Encode raw audio into WAV",
|
|
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
|