Merge commit 'ad5bbc408637cffd4cc2ba990abef529cf5fa6a3'
[ffmpeg.git] / libavformat / mpegenc.c
index 695de3f..4c6fa67 100644 (file)
@@ -353,7 +353,8 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
             if (!s->is_mpeg2 &&
                 (st->codecpar->codec_id == AV_CODEC_ID_AC3 ||
                  st->codecpar->codec_id == AV_CODEC_ID_DTS ||
-                 st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE))
+                 st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE ||
+                 st->codecpar->codec_id == AV_CODEC_ID_PCM_DVD))
                  av_log(ctx, AV_LOG_WARNING,
                         "%s in MPEG-1 system streams is not widely supported, "
                         "consider using the vob or the dvd muxer "
@@ -363,16 +364,30 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
                 stream->id = ac3_id++;
             } else if (st->codecpar->codec_id == AV_CODEC_ID_DTS) {
                 stream->id = dts_id++;
-            } else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE) {
+            } else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE ||
+                       st->codecpar->codec_id == AV_CODEC_ID_PCM_DVD) {
+                if (st->codecpar->bits_per_coded_sample != 16) {
+                    av_log(ctx, AV_LOG_ERROR, "Only 16 bit LPCM streams can be muxed.\n");
+                    goto fail;
+                }
                 stream->id = lpcm_id++;
                 for (j = 0; j < 4; j++) {
                     if (lpcm_freq_tab[j] == st->codecpar->sample_rate)
                         break;
                 }
-                if (j == 4)
+                if (j == 4) {
+                    int sr;
+                    av_log(ctx, AV_LOG_ERROR, "Invalid sampling rate for PCM stream.\n");
+                    av_log(ctx, AV_LOG_INFO, "Allowed sampling rates:");
+                    for (sr = 0; sr < 4; sr++)
+                         av_log(ctx, AV_LOG_INFO, " %d", lpcm_freq_tab[sr]);
+                    av_log(ctx, AV_LOG_INFO, "\n");
+                    goto fail;
+                }
+                if (st->codecpar->channels > 8) {
+                    av_log(ctx, AV_LOG_ERROR, "At most 8 channels allowed for LPCM streams.\n");
                     goto fail;
-                if (st->codecpar->channels > 8)
-                    return -1;
+                }
                 stream->lpcm_header[0] = 0x0c;
                 stream->lpcm_header[1] = (st->codecpar->channels - 1) | (j << 4);
                 stream->lpcm_header[2] = 0x80;
@@ -1150,6 +1165,19 @@ static int mpeg_mux_write_packet(AVFormatContext *ctx, AVPacket *pkt)
         return AVERROR(ENOMEM);
     pkt_desc->pts            = pts;
     pkt_desc->dts            = dts;
+
+    if (st->codecpar->codec_id == AV_CODEC_ID_PCM_DVD) {
+        if (size < 3) {
+            av_log(ctx, AV_LOG_ERROR, "Invalid packet size %d\n", size);
+            return AVERROR(EINVAL);
+        }
+
+        /* Skip first 3 bytes of packet data, which comprise PCM header
+           and will be written fresh by this muxer. */
+        buf += 3;
+        size -= 3;
+    }
+
     pkt_desc->unwritten_size =
     pkt_desc->size           = size;
     if (!stream->predecode_packet)