* Yamaha SMAF format
* Copyright (c) 2005 Vidar Madsen
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
+#include "libavutil/channel_layout.h"
#include "avformat.h"
-#include "allformats.h"
+#include "avio_internal.h"
+#include "internal.h"
+#include "pcm.h"
#include "riff.h"
-typedef struct {
- offset_t atrpos, atsqpos, awapos;
- offset_t data_size;
+typedef struct MMFContext {
+ int64_t atrpos, atsqpos, awapos;
+ int64_t data_size;
} MMFContext;
-static int mmf_rates[] = { 4000, 8000, 11025, 22050, 44100 };
+static const int mmf_rates[] = { 4000, 8000, 11025, 22050, 44100 };
+
+static int mmf_rate(int code)
+{
+ if ((code < 0) || (code > 4))
+ return -1;
+ return mmf_rates[code];
+}
+#if CONFIG_MMF_MUXER
static int mmf_rate_code(int rate)
{
int i;
- for(i = 0; i < 5; i++)
- if(mmf_rates[i] == rate)
+ for (i = 0; i < 5; i++)
+ if (mmf_rates[i] == rate)
return i;
return -1;
}
-static int mmf_rate(int code)
-{
- if((code < 0) || (code > 4))
- return -1;
- return mmf_rates[code];
-}
-
-#ifdef CONFIG_MUXERS
/* Copy of end_tag() from avienc.c, but for big-endian chunk size */
-static void end_tag_be(ByteIOContext *pb, offset_t start)
+static void end_tag_be(AVIOContext *pb, int64_t start)
{
- offset_t pos;
+ int64_t pos;
- pos = url_ftell(pb);
- url_fseek(pb, start - 4, SEEK_SET);
- put_be32(pb, (uint32_t)(pos - start));
- url_fseek(pb, pos, SEEK_SET);
+ pos = avio_tell(pb);
+ avio_seek(pb, start - 4, SEEK_SET);
+ avio_wb32(pb, (uint32_t)(pos - start));
+ avio_seek(pb, pos, SEEK_SET);
}
static int mmf_write_header(AVFormatContext *s)
{
MMFContext *mmf = s->priv_data;
- ByteIOContext *pb = &s->pb;
- offset_t pos;
+ AVIOContext *pb = s->pb;
+ int64_t pos;
int rate;
- rate = mmf_rate_code(s->streams[0]->codec->sample_rate);
- if(rate < 0) {
- av_log(s, AV_LOG_ERROR, "Unsupported sample rate %d\n", s->streams[0]->codec->sample_rate);
+ rate = mmf_rate_code(s->streams[0]->codecpar->sample_rate);
+ if (rate < 0) {
+ av_log(s, AV_LOG_ERROR, "Unsupported sample rate %d\n",
+ s->streams[0]->codecpar->sample_rate);
return -1;
}
- put_tag(pb, "MMMD");
- put_be32(pb, 0);
- pos = start_tag(pb, "CNTI");
- put_byte(pb, 0); /* class */
- put_byte(pb, 0); /* type */
- put_byte(pb, 0); /* code type */
- put_byte(pb, 0); /* status */
- put_byte(pb, 0); /* counts */
- put_tag(pb, "VN:libavcodec,"); /* metadata ("ST:songtitle,VN:version,...") */
+ ffio_wfourcc(pb, "MMMD");
+ avio_wb32(pb, 0);
+ pos = ff_start_tag(pb, "CNTI");
+ avio_w8(pb, 0); /* class */
+ avio_w8(pb, 0); /* type */
+ avio_w8(pb, 0); /* code type */
+ avio_w8(pb, 0); /* status */
+ avio_w8(pb, 0); /* counts */
+ end_tag_be(pb, pos);
+
+ pos = ff_start_tag(pb, "OPDA");
+ avio_write(pb, "VN:libavcodec,", sizeof("VN:libavcodec,") -1); /* metadata ("ST:songtitle,VN:version,...") */
end_tag_be(pb, pos);
- put_buffer(pb, "ATR\x00", 4);
- put_be32(pb, 0);
- mmf->atrpos = url_ftell(pb);
- put_byte(pb, 0); /* format type */
- put_byte(pb, 0); /* sequence type */
- put_byte(pb, (0 << 7) | (1 << 4) | rate); /* (channel << 7) | (format << 4) | rate */
- put_byte(pb, 0); /* wave base bit */
- put_byte(pb, 2); /* time base d */
- put_byte(pb, 2); /* time base g */
-
- put_tag(pb, "Atsq");
- put_be32(pb, 16);
- mmf->atsqpos = url_ftell(pb);
+ avio_write(pb, "ATR\x00", 4);
+ avio_wb32(pb, 0);
+ mmf->atrpos = avio_tell(pb);
+ avio_w8(pb, 0); /* format type */
+ avio_w8(pb, 0); /* sequence type */
+ avio_w8(pb, (0 << 7) | (1 << 4) | rate); /* (channel << 7) | (format << 4) | rate */
+ avio_w8(pb, 0); /* wave base bit */
+ avio_w8(pb, 2); /* time base d */
+ avio_w8(pb, 2); /* time base g */
+
+ ffio_wfourcc(pb, "Atsq");
+ avio_wb32(pb, 16);
+ mmf->atsqpos = avio_tell(pb);
/* Will be filled on close */
- put_buffer(pb, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16);
+ avio_write(pb, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16);
- mmf->awapos = start_tag(pb, "Awa\x01");
+ mmf->awapos = ff_start_tag(pb, "Awa\x01");
- av_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate);
+ avpriv_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codecpar->sample_rate);
- put_flush_packet(pb);
+ avio_flush(pb);
return 0;
}
static int mmf_write_packet(AVFormatContext *s, AVPacket *pkt)
{
- ByteIOContext *pb = &s->pb;
- put_buffer(pb, pkt->data, pkt->size);
+ AVIOContext *pb = s->pb;
+ avio_write(pb, pkt->data, pkt->size);
return 0;
}
/* Write a variable-length symbol */
-static void put_varlength(ByteIOContext *pb, int val)
+static void put_varlength(AVIOContext *pb, int val)
{
- if(val < 128)
- put_byte(pb, val);
+ if (val < 128)
+ avio_w8(pb, val);
else {
val -= 128;
- put_byte(pb, 0x80 | val >> 7);
- put_byte(pb, 0x7f & val);
+ avio_w8(pb, 0x80 | val >> 7);
+ avio_w8(pb, 0x7f & val);
}
}
static int mmf_write_trailer(AVFormatContext *s)
{
- ByteIOContext *pb = &s->pb;
+ AVIOContext *pb = s->pb;
MMFContext *mmf = s->priv_data;
- offset_t pos, size;
+ int64_t pos, size;
int gatetime;
- if (!url_is_streamed(&s->pb)) {
+ if (s->pb->seekable) {
/* Fill in length fields */
end_tag_be(pb, mmf->awapos);
end_tag_be(pb, mmf->atrpos);
end_tag_be(pb, 8);
- pos = url_ftell(pb);
+ pos = avio_tell(pb);
size = pos - mmf->awapos;
/* Fill Atsq chunk */
- url_fseek(pb, mmf->atsqpos, SEEK_SET);
+ avio_seek(pb, mmf->atsqpos, SEEK_SET);
/* "play wav" */
- put_byte(pb, 0); /* start time */
- put_byte(pb, 1); /* (channel << 6) | wavenum */
- gatetime = size * 500 / s->streams[0]->codec->sample_rate;
+ avio_w8(pb, 0); /* start time */
+ avio_w8(pb, 1); /* (channel << 6) | wavenum */
+ gatetime = size * 500 / s->streams[0]->codecpar->sample_rate;
put_varlength(pb, gatetime); /* duration */
/* "nop" */
put_varlength(pb, gatetime); /* start time */
- put_buffer(pb, "\xff\x00", 2); /* nop */
+ avio_write(pb, "\xff\x00", 2); /* nop */
/* "end of sequence" */
- put_buffer(pb, "\x00\x00\x00\x00", 4);
+ avio_write(pb, "\x00\x00\x00\x00", 4);
- url_fseek(pb, pos, SEEK_SET);
+ avio_seek(pb, pos, SEEK_SET);
- put_flush_packet(pb);
+ avio_flush(pb);
}
return 0;
}
-#endif //CONFIG_MUXERS
+#endif /* CONFIG_MMF_MUXER */
static int mmf_probe(AVProbeData *p)
{
}
/* mmf input */
-static int mmf_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
+static int mmf_read_header(AVFormatContext *s)
{
MMFContext *mmf = s->priv_data;
unsigned int tag;
- ByteIOContext *pb = &s->pb;
+ AVIOContext *pb = s->pb;
AVStream *st;
- offset_t file_size, size;
+ int64_t size;
int rate, params;
- tag = get_le32(pb);
+ tag = avio_rl32(pb);
if (tag != MKTAG('M', 'M', 'M', 'D'))
return -1;
- file_size = get_be32(pb);
+ avio_skip(pb, 4); /* file_size */
/* Skip some unused chunks that may or may not be present */
- for(;; url_fseek(pb, size, SEEK_CUR)) {
- tag = get_le32(pb);
- size = get_be32(pb);
- if(tag == MKTAG('C','N','T','I')) continue;
- if(tag == MKTAG('O','P','D','A')) continue;
+ for (;; avio_skip(pb, size)) {
+ tag = avio_rl32(pb);
+ size = avio_rb32(pb);
+ if (tag == MKTAG('C', 'N', 'T', 'I'))
+ continue;
+ if (tag == MKTAG('O', 'P', 'D', 'A'))
+ continue;
break;
}
return -1;
}
- get_byte(pb); /* format type */
- get_byte(pb); /* sequence type */
- params = get_byte(pb); /* (channel << 7) | (format << 4) | rate */
- rate = mmf_rate(params & 0x0f);
- if(rate < 0) {
+ avio_r8(pb); /* format type */
+ avio_r8(pb); /* sequence type */
+ params = avio_r8(pb); /* (channel << 7) | (format << 4) | rate */
+ rate = mmf_rate(params & 0x0f);
+ if (rate < 0) {
av_log(s, AV_LOG_ERROR, "Invalid sample rate\n");
return -1;
}
- get_byte(pb); /* wave base bit */
- get_byte(pb); /* time base d */
- get_byte(pb); /* time base g */
+ avio_r8(pb); /* wave base bit */
+ avio_r8(pb); /* time base d */
+ avio_r8(pb); /* time base g */
/* Skip some unused chunks that may or may not be present */
- for(;; url_fseek(pb, size, SEEK_CUR)) {
- tag = get_le32(pb);
- size = get_be32(pb);
- if(tag == MKTAG('A','t','s','q')) continue;
- if(tag == MKTAG('A','s','p','I')) continue;
+ for (;; avio_skip(pb, size)) {
+ tag = avio_rl32(pb);
+ size = avio_rb32(pb);
+ if (tag == MKTAG('A', 't', 's', 'q'))
+ continue;
+ if (tag == MKTAG('A', 's', 'p', 'I'))
+ continue;
break;
}
}
mmf->data_size = size;
- st = av_new_stream(s, 0);
+ st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
- st->codec->codec_type = CODEC_TYPE_AUDIO;
- st->codec->codec_id = CODEC_ID_ADPCM_YAMAHA;
- st->codec->sample_rate = rate;
- st->codec->channels = 1;
- st->codec->bits_per_sample = 4;
- st->codec->bit_rate = st->codec->sample_rate * st->codec->bits_per_sample;
+ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codecpar->codec_id = AV_CODEC_ID_ADPCM_YAMAHA;
+ st->codecpar->sample_rate = rate;
+ st->codecpar->channels = 1;
+ st->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
+ st->codecpar->bits_per_coded_sample = 4;
+ st->codecpar->bit_rate = st->codecpar->sample_rate *
+ st->codecpar->bits_per_coded_sample;
- av_set_pts_info(st, 64, 1, st->codec->sample_rate);
+ avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
return 0;
}
#define MAX_SIZE 4096
-static int mmf_read_packet(AVFormatContext *s,
- AVPacket *pkt)
+static int mmf_read_packet(AVFormatContext *s, AVPacket *pkt)
{
MMFContext *mmf = s->priv_data;
- AVStream *st;
int ret, size;
- if (url_feof(&s->pb))
+ if (s->pb->eof_reached)
return AVERROR(EIO);
- st = s->streams[0];
size = MAX_SIZE;
- if(size > mmf->data_size)
+ if (size > mmf->data_size)
size = mmf->data_size;
- if(!size)
+ if (!size)
return AVERROR(EIO);
if (av_new_packet(pkt, size))
return AVERROR(EIO);
pkt->stream_index = 0;
- ret = get_buffer(&s->pb, pkt->data, pkt->size);
+ ret = avio_read(s->pb, pkt->data, pkt->size);
if (ret < 0)
- av_free_packet(pkt);
+ av_packet_unref(pkt);
mmf->data_size -= ret;
return ret;
}
-static int mmf_read_close(AVFormatContext *s)
-{
- return 0;
-}
-
-static int mmf_read_seek(AVFormatContext *s,
- int stream_index, int64_t timestamp, int flags)
-{
- return pcm_read_seek(s, stream_index, timestamp, flags);
-}
-
-#ifdef CONFIG_MMF_DEMUXER
-AVInputFormat mmf_demuxer = {
- "mmf",
- "mmf format",
- sizeof(MMFContext),
- mmf_probe,
- mmf_read_header,
- mmf_read_packet,
- mmf_read_close,
- mmf_read_seek,
+#if CONFIG_MMF_DEMUXER
+AVInputFormat ff_mmf_demuxer = {
+ .name = "mmf",
+ .long_name = NULL_IF_CONFIG_SMALL("Yamaha SMAF"),
+ .priv_data_size = sizeof(MMFContext),
+ .read_probe = mmf_probe,
+ .read_header = mmf_read_header,
+ .read_packet = mmf_read_packet,
+ .read_seek = ff_pcm_read_seek,
};
#endif
-#ifdef CONFIG_MMF_MUXER
-AVOutputFormat mmf_muxer = {
- "mmf",
- "mmf format",
- "application/vnd.smaf",
- "mmf",
- sizeof(MMFContext),
- CODEC_ID_ADPCM_YAMAHA,
- CODEC_ID_NONE,
- mmf_write_header,
- mmf_write_packet,
- mmf_write_trailer,
+
+#if CONFIG_MMF_MUXER
+AVOutputFormat ff_mmf_muxer = {
+ .name = "mmf",
+ .long_name = NULL_IF_CONFIG_SMALL("Yamaha SMAF"),
+ .mime_type = "application/vnd.smaf",
+ .extensions = "mmf",
+ .priv_data_size = sizeof(MMFContext),
+ .audio_codec = AV_CODEC_ID_ADPCM_YAMAHA,
+ .video_codec = AV_CODEC_ID_NONE,
+ .write_header = mmf_write_header,
+ .write_packet = mmf_write_packet,
+ .write_trailer = mmf_write_trailer,
};
#endif
projects / ffmpeg / blobdiff