On Wed, 29 Feb 2012, Justin Ruggles wrote:

---
libavcodec/roqaudioenc.c |   45 ++++++++++++++++++++++++++++++---------------
1 files changed, 30 insertions(+), 15 deletions(-)

diff --git a/libavcodec/roqaudioenc.c b/libavcodec/roqaudioenc.c
index cebc53c..4043590 100644
--- a/libavcodec/roqaudioenc.c
+++ b/libavcodec/roqaudioenc.c
@@ -24,6 +24,7 @@
#include "libavutil/intmath.h"
#include "avcodec.h"
#include "bytestream.h"
+#include "internal.h"

#define ROQ_FRAME_SIZE           735
#define ROQ_HEADER_SIZE   8
@@ -37,6 +38,7 @@ typedef struct
    int input_frames;
    int buffered_samples;
    int16_t *frame_buffer;
+    int64_t first_pts;
} ROQDPCMContext;


@@ -44,7 +46,9 @@ static av_cold int roq_dpcm_encode_close(AVCodecContext 
*avctx)
{
    ROQDPCMContext *context = avctx->priv_data;

+#if FF_API_OLD_ENCODE_AUDIO
    av_freep(&avctx->coded_frame);
+#endif
    av_freep(&context->frame_buffer);

    return 0;
@@ -77,11 +81,13 @@ static av_cold int roq_dpcm_encode_init(AVCodecContext 
*avctx)

    context->lastSample[0] = context->lastSample[1] = 0;

+#if FF_API_OLD_ENCODE_AUDIO
    avctx->coded_frame= avcodec_alloc_frame();
    if (!avctx->coded_frame) {
        ret = AVERROR(ENOMEM);
        goto error;
    }
+#endif

    return 0;
error:
@@ -129,25 +135,30 @@ static unsigned char dpcm_predict(short *previous, short 
current)
    return result;
}

-static int roq_dpcm_encode_frame(AVCodecContext *avctx,
-                unsigned char *frame, int buf_size, void *data)
+static int roq_dpcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
+                                 const AVFrame *frame, int *got_packet_ptr)
{
-    int i, stereo, data_size;
-    const int16_t *in = data;
-    uint8_t *out = frame;
+    int i, stereo, data_size, ret;
+    const int16_t *in = frame ? (const int16_t *)frame->data[0] : NULL;
+    uint8_t *out;
    ROQDPCMContext *context = avctx->priv_data;

    stereo = (avctx->channels == 2);

-    if (!data && context->input_frames >= 8)
+    if (!in && context->input_frames >= 8) {
+        *got_packet_ptr = 0;
        return 0;
+    }

-    if (data && context->input_frames < 8) {
+    if (in && context->input_frames < 8) {
        memcpy(&context->frame_buffer[context->buffered_samples * 
avctx->channels],
               in, avctx->frame_size * avctx->channels * sizeof(*in));
        context->buffered_samples += avctx->frame_size;
+        if (context->input_frames == 0)
+            context->first_pts = frame->pts;
        if (context->input_frames < 7) {
            context->input_frames++;
+            *got_packet_ptr = 0;
            return 0;
        }
        in = context->frame_buffer;
@@ -158,15 +169,16 @@ static int roq_dpcm_encode_frame(AVCodecContext *avctx,
        context->lastSample[1] &= 0xFF00;
    }

-    if (context->input_frames == 7 || !data)
+    if (context->input_frames == 7 || !in)
        data_size = avctx->channels * context->buffered_samples;
    else
        data_size = avctx->channels * avctx->frame_size;

-    if (buf_size < ROQ_HEADER_SIZE + data_size) {
-        av_log(avctx, AV_LOG_ERROR, "output buffer is too small\n");
-        return AVERROR(EINVAL);
+    if ((ret = ff_alloc_packet(avpkt, ROQ_HEADER_SIZE + data_size))) {
+        av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
+        return ret;
    }
+    out = avpkt->data;

    bytestream_put_byte(&out, stereo ? 0x21 : 0x20);
    bytestream_put_byte(&out, 0x10);
@@ -182,12 +194,15 @@ static int roq_dpcm_encode_frame(AVCodecContext *avctx,
    for (i = 0; i < data_size; i++)
        *out++ = dpcm_predict(&context->lastSample[i & 1], *in++);

+    avpkt->pts      = context->input_frames <= 7 ? context->first_pts : 
frame->pts;
+    avpkt->duration = data_size / avctx->channels;

The patch is ok I guess - this pts handling looks strange, but I'm quite sure there's some reason for it. Could you explain that reason in the commit message?

// Martin
_______________________________________________
libav-devel mailing list
libav-devel@libav.org
https://lists.libav.org/mailman/listinfo/libav-devel

Reply via email to