X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fmmf.c;h=55aeff410f9b9c4fa04a2dde7b6eacaf0d6ac997;hb=70c77fdfc1076fd7f6cd20079237ddc97e1a10bc;hp=7fcbde9e7fadf035f9af0f0e8fc00f11c57f2605;hpb=6f3e0b21748b53fd7b0471196bbda1d7e561f4fe;p=ffmpeg

diff --git a/libavformat/mmf.c b/libavformat/mmf.c
index 7fcbde9e7fa..55aeff410f9 100644
--- a/libavformat/mmf.c
+++ b/libavformat/mmf.c
@@ -2,168 +2,176 @@
  * 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)
 {
@@ -178,27 +186,28 @@ 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;
     }
 
@@ -212,24 +221,26 @@ static int mmf_read_header(AVFormatContext *s,
         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;
     }
 
@@ -240,49 +251,48 @@ static int mmf_read_header(AVFormatContext *s,
     }
     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;
 
@@ -290,40 +300,29 @@ static int mmf_read_packet(AVFormatContext *s,
     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