ffmpeg source update for sep 09

source/patched-ffmpeg-mt/libavformat/pcmdec.c

+/*
+ * RAW PCM demuxers
+ * Copyright (c) 2002 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "avformat.h"
+#include "rawdec.h"
+#include "pcm.h"
+
+#define RAW_SAMPLES     1024
+
+static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    int ret, size, bps;
+    //    AVStream *st = s->streams[0];
+
+    size= RAW_SAMPLES*s->streams[0]->codec->block_align;
+
+    ret= av_get_packet(s->pb, pkt, size);
+
+    pkt->stream_index = 0;
+    if (ret < 0)
+        return ret;
+
+    bps= av_get_bits_per_sample(s->streams[0]->codec->codec_id);
+    assert(bps); // if false there IS a bug elsewhere (NOT in this function)
+    pkt->dts=
+    pkt->pts= pkt->pos*8 / (bps * s->streams[0]->codec->channels);
+
+    return ret;
+}
+
+#define PCMDEF(name, long_name, ext, codec) \
+AVInputFormat pcm_ ## name ## _demuxer = {\
+    #name,\
+    NULL_IF_CONFIG_SMALL(long_name),\
+    0,\
+    NULL,\
+    ff_raw_read_header,\
+    raw_read_packet,\
+    NULL,\
+    pcm_read_seek,\
+    .flags= AVFMT_GENERIC_INDEX,\
+    .extensions = ext,\
+    .value = codec,\
+};
+
+PCMDEF(f64be, "PCM 64 bit floating-point big-endian format",
+       NULL, CODEC_ID_PCM_F64BE)
+
+PCMDEF(f64le, "PCM 64 bit floating-point little-endian format",
+       NULL, CODEC_ID_PCM_F64LE)
+
+PCMDEF(f32be, "PCM 32 bit floating-point big-endian format",
+       NULL, CODEC_ID_PCM_F32BE)
+
+PCMDEF(f32le, "PCM 32 bit floating-point little-endian format",
+       NULL, CODEC_ID_PCM_F32LE)
+
+PCMDEF(s32be, "PCM signed 32 bit big-endian format",
+       NULL, CODEC_ID_PCM_S32BE)
+
+PCMDEF(s32le, "PCM signed 32 bit little-endian format",
+       NULL, CODEC_ID_PCM_S32LE)
+
+PCMDEF(s24be, "PCM signed 24 bit big-endian format",
+       NULL, CODEC_ID_PCM_S24BE)
+
+PCMDEF(s24le, "PCM signed 24 bit little-endian format",
+       NULL, CODEC_ID_PCM_S24LE)
+
+PCMDEF(s16be, "PCM signed 16 bit big-endian format",
+       AV_NE("sw", NULL), CODEC_ID_PCM_S16BE)
+
+PCMDEF(s16le, "PCM signed 16 bit little-endian format",
+       AV_NE(NULL, "sw"), CODEC_ID_PCM_S16LE)
+
+PCMDEF(s8, "PCM signed 8 bit format",
+       "sb", CODEC_ID_PCM_S8)
+
+PCMDEF(u32be, "PCM unsigned 32 bit big-endian format",
+       NULL, CODEC_ID_PCM_U32BE)
+
+PCMDEF(u32le, "PCM unsigned 32 bit little-endian format",
+       NULL, CODEC_ID_PCM_U32LE)
+
+PCMDEF(u24be, "PCM unsigned 24 bit big-endian format",
+       NULL, CODEC_ID_PCM_U24BE)
+
+PCMDEF(u24le, "PCM unsigned 24 bit little-endian format",
+       NULL, CODEC_ID_PCM_U24LE)
+
+PCMDEF(u16be, "PCM unsigned 16 bit big-endian format",
+       AV_NE("uw", NULL), CODEC_ID_PCM_U16BE)
+
+PCMDEF(u16le, "PCM unsigned 16 bit little-endian format",
+       AV_NE(NULL, "uw"), CODEC_ID_PCM_U16LE)
+
+PCMDEF(u8, "PCM unsigned 8 bit format",
+       "ub", CODEC_ID_PCM_U8)
+
+PCMDEF(alaw, "PCM A-law format",
+       "al", CODEC_ID_PCM_ALAW)
+
+PCMDEF(mulaw, "PCM mu-law format",
+       "ul", CODEC_ID_PCM_MULAW)