Revert "lavd: add new API for iterating input and output devices"
[ffmpeg.git] / libavformat / segafilm.c
index 6274041..4c0cca0 100644 (file)
@@ -1,6 +1,6 @@
 /*
  * Sega FILM Format (CPK) Demuxer
- * Copyright (c) 2003 The ffmpeg Project
+ * Copyright (c) 2003 The FFmpeg project
  *
  * This file is part of FFmpeg.
  *
 
 #include "libavutil/intreadwrite.h"
 #include "avformat.h"
+#include "internal.h"
+#include "avio_internal.h"
 
 #define FILM_TAG MKBETAG('F', 'I', 'L', 'M')
 #define FDSC_TAG MKBETAG('F', 'D', 'S', 'C')
 #define STAB_TAG MKBETAG('S', 'T', 'A', 'B')
 #define CVID_TAG MKBETAG('c', 'v', 'i', 'd')
+#define RAW_TAG  MKBETAG('r', 'a', 'w', ' ')
 
-typedef struct {
+typedef struct film_sample {
   int stream;
   int64_t sample_offset;
   unsigned int sample_size;
@@ -47,22 +50,18 @@ typedef struct FilmDemuxContext {
     int video_stream_index;
     int audio_stream_index;
 
-    enum CodecID audio_type;
+    enum AVCodecID audio_type;
     unsigned int audio_samplerate;
     unsigned int audio_bits;
     unsigned int audio_channels;
 
-    enum CodecID video_type;
+    enum AVCodecID video_type;
     unsigned int sample_count;
     film_sample *sample_table;
     unsigned int current_sample;
 
     unsigned int base_clock;
     unsigned int version;
-
-    /* buffer used for interleaving stereo PCM data */
-    unsigned char *stereo_buffer;
-    int stereo_buffer_size;
 } FilmDemuxContext;
 
 static int film_probe(AVProbeData *p)
@@ -70,26 +69,36 @@ static int film_probe(AVProbeData *p)
     if (AV_RB32(&p->buf[0]) != FILM_TAG)
         return 0;
 
+    if (AV_RB32(&p->buf[16]) != FDSC_TAG)
+        return 0;
+
     return AVPROBE_SCORE_MAX;
 }
 
-static int film_read_header(AVFormatContext *s,
-                            AVFormatParameters *ap)
+static int film_read_close(AVFormatContext *s)
+{
+    FilmDemuxContext *film = s->priv_data;
+
+    av_freep(&film->sample_table);
+
+    return 0;
+}
+
+static int film_read_header(AVFormatContext *s)
 {
     FilmDemuxContext *film = s->priv_data;
-    ByteIOContext *pb = s->pb;
+    AVIOContext *pb = s->pb;
     AVStream *st;
     unsigned char scratch[256];
-    int i;
+    int i, ret;
     unsigned int data_offset;
     unsigned int audio_frame_counter;
+    unsigned int video_frame_counter;
 
     film->sample_table = NULL;
-    film->stereo_buffer = NULL;
-    film->stereo_buffer_size = 0;
 
     /* load the main FILM header */
-    if (get_buffer(pb, scratch, 16) != 16)
+    if (avio_read(pb, scratch, 16) != 16)
         return AVERROR(EIO);
     data_offset = AV_RB32(&scratch[4]);
     film->version = AV_RB32(&scratch[8]);
@@ -97,68 +106,93 @@ static int film_read_header(AVFormatContext *s,
     /* load the FDSC chunk */
     if (film->version == 0) {
         /* special case for Lemmings .film files; 20-byte header */
-        if (get_buffer(pb, scratch, 20) != 20)
+        if (avio_read(pb, scratch, 20) != 20)
             return AVERROR(EIO);
         /* make some assumptions about the audio parameters */
-        film->audio_type = CODEC_ID_PCM_S8;
+        film->audio_type = AV_CODEC_ID_PCM_S8;
         film->audio_samplerate = 22050;
         film->audio_channels = 1;
         film->audio_bits = 8;
     } else {
         /* normal Saturn .cpk files; 32-byte header */
-        if (get_buffer(pb, scratch, 32) != 32)
+        if (avio_read(pb, scratch, 32) != 32)
             return AVERROR(EIO);
         film->audio_samplerate = AV_RB16(&scratch[24]);
         film->audio_channels = scratch[21];
         film->audio_bits = scratch[22];
-        if (film->audio_bits == 8)
-            film->audio_type = CODEC_ID_PCM_S8;
-        else if (film->audio_bits == 16)
-            film->audio_type = CODEC_ID_PCM_S16BE;
-        else
-            film->audio_type = CODEC_ID_NONE;
+        if (scratch[23] == 2 && film->audio_channels > 0)
+            film->audio_type = AV_CODEC_ID_ADPCM_ADX;
+        else if (film->audio_channels > 0) {
+            if (film->audio_bits == 8)
+                film->audio_type = AV_CODEC_ID_PCM_S8_PLANAR;
+            else if (film->audio_bits == 16)
+                film->audio_type = AV_CODEC_ID_PCM_S16BE_PLANAR;
+            else
+                film->audio_type = AV_CODEC_ID_NONE;
+        } else
+            film->audio_type = AV_CODEC_ID_NONE;
     }
 
     if (AV_RB32(&scratch[0]) != FDSC_TAG)
         return AVERROR_INVALIDDATA;
 
     if (AV_RB32(&scratch[8]) == CVID_TAG) {
-        film->video_type = CODEC_ID_CINEPAK;
-    } else
-        film->video_type = CODEC_ID_NONE;
+        film->video_type = AV_CODEC_ID_CINEPAK;
+    } else if (AV_RB32(&scratch[8]) == RAW_TAG) {
+        film->video_type = AV_CODEC_ID_RAWVIDEO;
+    } else {
+        film->video_type = AV_CODEC_ID_NONE;
+    }
 
     /* initialize the decoder streams */
     if (film->video_type) {
-        st = av_new_stream(s, 0);
+        st = avformat_new_stream(s, NULL);
         if (!st)
             return AVERROR(ENOMEM);
         film->video_stream_index = st->index;
-        st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
-        st->codec->codec_id = film->video_type;
-        st->codec->codec_tag = 0;  /* no fourcc */
-        st->codec->width = AV_RB32(&scratch[16]);
-        st->codec->height = AV_RB32(&scratch[12]);
+        st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+        st->codecpar->codec_id = film->video_type;
+        st->codecpar->codec_tag = 0;  /* no fourcc */
+        st->codecpar->width = AV_RB32(&scratch[16]);
+        st->codecpar->height = AV_RB32(&scratch[12]);
+
+        if (film->video_type == AV_CODEC_ID_RAWVIDEO) {
+            if (scratch[20] == 24) {
+                st->codecpar->format = AV_PIX_FMT_RGB24;
+            } else {
+                av_log(s, AV_LOG_ERROR, "raw video is using unhandled %dbpp\n", scratch[20]);
+                return -1;
+            }
+        }
     }
 
     if (film->audio_type) {
-        st = av_new_stream(s, 0);
+        st = avformat_new_stream(s, NULL);
         if (!st)
             return AVERROR(ENOMEM);
         film->audio_stream_index = st->index;
-        st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
-        st->codec->codec_id = film->audio_type;
-        st->codec->codec_tag = 1;
-        st->codec->channels = film->audio_channels;
-        st->codec->bits_per_coded_sample = film->audio_bits;
-        st->codec->sample_rate = film->audio_samplerate;
-        st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
-            st->codec->bits_per_coded_sample;
-        st->codec->block_align = st->codec->channels *
-            st->codec->bits_per_coded_sample / 8;
+        st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+        st->codecpar->codec_id = film->audio_type;
+        st->codecpar->codec_tag = 1;
+        st->codecpar->channels = film->audio_channels;
+        st->codecpar->sample_rate = film->audio_samplerate;
+
+        if (film->audio_type == AV_CODEC_ID_ADPCM_ADX) {
+            st->codecpar->bits_per_coded_sample = 18 * 8 / 32;
+            st->codecpar->block_align = st->codecpar->channels * 18;
+            st->need_parsing = AVSTREAM_PARSE_FULL;
+        } else {
+            st->codecpar->bits_per_coded_sample = film->audio_bits;
+            st->codecpar->block_align = st->codecpar->channels *
+                st->codecpar->bits_per_coded_sample / 8;
+        }
+
+        st->codecpar->bit_rate = st->codecpar->channels * st->codecpar->sample_rate *
+            st->codecpar->bits_per_coded_sample;
     }
 
     /* load the sample table */
-    if (get_buffer(pb, scratch, 16) != 16)
+    if (avio_read(pb, scratch, 16) != 16)
         return AVERROR(EIO);
     if (AV_RB32(&scratch[0]) != STAB_TAG)
         return AVERROR_INVALIDDATA;
@@ -166,128 +200,124 @@ static int film_read_header(AVFormatContext *s,
     film->sample_count = AV_RB32(&scratch[12]);
     if(film->sample_count >= UINT_MAX / sizeof(film_sample))
         return -1;
-    film->sample_table = av_malloc(film->sample_count * sizeof(film_sample));
-
-    for(i=0; i<s->nb_streams; i++)
-        av_set_pts_info(s->streams[i], 33, 1, film->base_clock);
+    film->sample_table = av_malloc_array(film->sample_count, sizeof(film_sample));
+    if (!film->sample_table)
+        return AVERROR(ENOMEM);
+
+    for (i = 0; i < s->nb_streams; i++) {
+        st = s->streams[i];
+        if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
+            avpriv_set_pts_info(st, 33, 1, film->base_clock);
+        else
+            avpriv_set_pts_info(st, 64, 1, film->audio_samplerate);
+    }
 
-    audio_frame_counter = 0;
+    audio_frame_counter = video_frame_counter = 0;
     for (i = 0; i < film->sample_count; i++) {
         /* load the next sample record and transfer it to an internal struct */
-        if (get_buffer(pb, scratch, 16) != 16) {
-            av_free(film->sample_table);
-            return AVERROR(EIO);
+        if (avio_read(pb, scratch, 16) != 16) {
+            ret = AVERROR(EIO);
+            goto fail;
         }
         film->sample_table[i].sample_offset =
             data_offset + AV_RB32(&scratch[0]);
         film->sample_table[i].sample_size = AV_RB32(&scratch[4]);
+        if (film->sample_table[i].sample_size > INT_MAX / 4) {
+            ret = AVERROR_INVALIDDATA;
+            goto fail;
+        }
         if (AV_RB32(&scratch[8]) == 0xFFFFFFFF) {
             film->sample_table[i].stream = film->audio_stream_index;
             film->sample_table[i].pts = audio_frame_counter;
-            film->sample_table[i].pts *= film->base_clock;
-            film->sample_table[i].pts /= film->audio_samplerate;
 
-            audio_frame_counter += (film->sample_table[i].sample_size /
-                (film->audio_channels * film->audio_bits / 8));
+            if (film->audio_type == AV_CODEC_ID_ADPCM_ADX)
+                audio_frame_counter += (film->sample_table[i].sample_size * 32 /
+                    (18 * film->audio_channels));
+            else if (film->audio_type != AV_CODEC_ID_NONE)
+                audio_frame_counter += (film->sample_table[i].sample_size /
+                    (film->audio_channels * film->audio_bits / 8));
         } else {
             film->sample_table[i].stream = film->video_stream_index;
             film->sample_table[i].pts = AV_RB32(&scratch[8]) & 0x7FFFFFFF;
-            film->sample_table[i].keyframe = (scratch[8] & 0x80) ? 0 : 1;
+            film->sample_table[i].keyframe = (scratch[8] & 0x80) ? AVINDEX_KEYFRAME : 0;
+            video_frame_counter++;
+            if (film->video_type)
+                av_add_index_entry(s->streams[film->video_stream_index],
+                                   film->sample_table[i].sample_offset,
+                                   film->sample_table[i].pts,
+                                   film->sample_table[i].sample_size, 0,
+                                   film->sample_table[i].keyframe);
         }
     }
 
+    if (film->audio_type)
+        s->streams[film->audio_stream_index]->duration = audio_frame_counter;
+
+    if (film->video_type)
+        s->streams[film->video_stream_index]->duration = video_frame_counter;
+
     film->current_sample = 0;
 
     return 0;
+fail:
+    film_read_close(s);
+    return ret;
 }
 
 static int film_read_packet(AVFormatContext *s,
                             AVPacket *pkt)
 {
     FilmDemuxContext *film = s->priv_data;
-    ByteIOContext *pb = s->pb;
+    AVIOContext *pb = s->pb;
     film_sample *sample;
     int ret = 0;
-    int i;
-    int left, right;
 
     if (film->current_sample >= film->sample_count)
-        return AVERROR(EIO);
+        return AVERROR_EOF;
 
     sample = &film->sample_table[film->current_sample];
 
     /* position the stream (will probably be there anyway) */
-    url_fseek(pb, sample->sample_offset, SEEK_SET);
-
-    /* do a special song and dance when loading FILM Cinepak chunks */
-    if ((sample->stream == film->video_stream_index) &&
-        (film->video_type == CODEC_ID_CINEPAK)) {
-        pkt->pos= url_ftell(pb);
-        if (av_new_packet(pkt, sample->sample_size))
-            return AVERROR(ENOMEM);
-        get_buffer(pb, pkt->data, sample->sample_size);
-    } else if ((sample->stream == film->audio_stream_index) &&
-        (film->audio_channels == 2)) {
-        /* stereo PCM needs to be interleaved */
+    avio_seek(pb, sample->sample_offset, SEEK_SET);
 
-        if (av_new_packet(pkt, sample->sample_size))
-            return AVERROR(ENOMEM);
-
-        /* make sure the interleave buffer is large enough */
-        if (sample->sample_size > film->stereo_buffer_size) {
-            av_free(film->stereo_buffer);
-            film->stereo_buffer_size = sample->sample_size;
-            film->stereo_buffer = av_malloc(film->stereo_buffer_size);
-        }
-
-        pkt->pos= url_ftell(pb);
-        ret = get_buffer(pb, film->stereo_buffer, sample->sample_size);
-        if (ret != sample->sample_size)
-            ret = AVERROR(EIO);
-
-        left = 0;
-        right = sample->sample_size / 2;
-        for (i = 0; i < sample->sample_size; ) {
-            if (film->audio_bits == 8) {
-                pkt->data[i++] = film->stereo_buffer[left++];
-                pkt->data[i++] = film->stereo_buffer[right++];
-            } else {
-                pkt->data[i++] = film->stereo_buffer[left++];
-                pkt->data[i++] = film->stereo_buffer[left++];
-                pkt->data[i++] = film->stereo_buffer[right++];
-                pkt->data[i++] = film->stereo_buffer[right++];
-            }
-        }
-    } else {
-        ret= av_get_packet(pb, pkt, sample->sample_size);
-        if (ret != sample->sample_size)
-            ret = AVERROR(EIO);
-    }
+    ret = av_get_packet(pb, pkt, sample->sample_size);
+    if (ret != sample->sample_size)
+        ret = AVERROR(EIO);
 
     pkt->stream_index = sample->stream;
     pkt->pts = sample->pts;
+    pkt->flags |= sample->keyframe ? AV_PKT_FLAG_KEY : 0;
 
     film->current_sample++;
 
     return ret;
 }
 
-static int film_read_close(AVFormatContext *s)
+static int film_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
 {
     FilmDemuxContext *film = s->priv_data;
+    AVStream *st = s->streams[stream_index];
+    int64_t pos;
+    int ret = av_index_search_timestamp(st, timestamp, flags);
+    if (ret < 0)
+        return ret;
+
+    pos = avio_seek(s->pb, st->index_entries[ret].pos, SEEK_SET);
+    if (pos < 0)
+        return pos;
 
-    av_free(film->sample_table);
-    av_free(film->stereo_buffer);
+    film->current_sample = ret;
 
     return 0;
 }
 
-AVInputFormat segafilm_demuxer = {
-    "film_cpk",
-    NULL_IF_CONFIG_SMALL("Sega FILM/CPK format"),
-    sizeof(FilmDemuxContext),
-    film_probe,
-    film_read_header,
-    film_read_packet,
-    film_read_close,
+AVInputFormat ff_segafilm_demuxer = {
+    .name           = "film_cpk",
+    .long_name      = NULL_IF_CONFIG_SMALL("Sega FILM / CPK"),
+    .priv_data_size = sizeof(FilmDemuxContext),
+    .read_probe     = film_probe,
+    .read_header    = film_read_header,
+    .read_packet    = film_read_packet,
+    .read_close     = film_read_close,
+    .read_seek      = film_read_seek,
 };